Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 0

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Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 3

 

 

 

 

Contents hide
122C, 122LK

Introduction

Product description

The product is a grass trimmer with a combustion engine.
Work is constantly in progress to increase your safety and efficiency during operation. Speak to your servicing dealer for more information.

Intended use

The product is used with a trimmer head to cut grass. Do not use the product for other tasks than grass trimming and grass clearing.

Note: National regulations can set limit to the operation of the product.

Product overview

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  1. Trimmer head
  2. Cutting attachment guard
  3. Shaft
  4. Loop handle
  5. Throttle trigger
  6. Stop switch
  7. Throttle trigger lockout
  8. Spark plug cap and spark plug
  9. Starter rope handle
  10. Fuel tank
  11. Air filter cover
  12. Air purge bulb
  13. Choke control
  14. Operator’s manual
  15. Combination wrench
  16. Starter housing
  17. Shaft coupling
  18. Bevel gear
  19. Grease filler cap, bevel gear
  20. Drive disc
Symbols on the product

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 10 WARNING! This product is dangerous. Injury or death can occur to the operator or bystanders if the product is not used carefully and correctly. To prevent injury to the operator or bystanders, read and obey all safety instructions in the operator’s manual.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 11

Read the operator’s manual carefully and make sure that you understand the instructions before use.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 12

Use a protective helmet in locations where objects can fall on you. Use approved hearing protection. Use approved eye protection.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 13  Maximum speed of the output shaft.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 14  The product agrees with the applicable EC directives.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 15   The product can cause objects to eject, which can cause injury.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 16

Keep a minimum of 15 m distance to persons and animals during operation of the product.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 17   Use approved protective gloves.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 18  Use heavy-duty slip-resistant boots.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 19  Only use flexible cutting wire. Do not use metal cutting attachments.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 20

Noise emission to the environment refer to the European Community’s Directive. The emission of the product is specified in the Technical data chapter and on the label.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 21 Air purge bulb.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 22  Choke.

yyyywwxxxx The rating plate shows the serial number. yyyy is the production year, ww is the production week.

Note: Other symbols/decals on the product refer to certification requirements for other commercial areas.

EPA III

EMISSION CONTROL INFORMATION

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HUSQVARNA AB HUSKVARNA SWEDEN    Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 25

THIS ENGINE MEETS US EPA AND CALIFORNIA EXH/EVP REGS FOR Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 26 SORE. REFER TO OPERATOR’S MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS. EMISSONS COMPLIANCE PERIOD : Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 27

The Emissions Compliance Period referred to on the Emission Compliance label indicates the number of operating hours for which the engine has been shown to meet Federal and California emissions requirements.

3

California Proposition 65

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 28  WARNING

The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.

Customer assistance

For customer assistance, call: 1-800-487-5951 or visit www.husqvarna.com.

Product liability

As referred to in the product liability laws, we are not liable for damages that our product causes if:

  • the product is incorrectly repaired.
  • the product is repaired with parts that are not from the manufacturer or not approved by the manufacturer.
  • the product has an accessory that is not from the manufacturer or not approved by the manufacturer.
  • the product is not repaired at an approved service center or by an approved authority.
Safety
Safety definitions

Warnings, cautions and notes are used to point out specially important parts of the manual.

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WARNING: Used if there is a risk of injury or death for the operator or bystanders if the instructions in the manual are not obeyed.

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CAUTION: Used if there is a risk of damage to the product, other materials or the adjacent area if the instructions in the manual are not obeyed.

Note: Used to give more information that is necessary in a given situation.

General safety instructions

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WARNING: Read the warning instructions that follow before you use the product.

  • Use the product correctly. Injury or death is a possible result of incorrect use. Only use the product for the tasks found in this manual. Do not use the product for other tasks.
  • Obey the instructions in this manual. Obey the safety symbols and the safety instructions. If the operator does not obey the instructions and the symbols, injury, damage or death is a possible result.
  • Do not discard this manual. Use the instructions to assemble, to operate and to keep your product in good condition. Use the instructions for correct installation of attachments and accessories. Only use approved attachments and accessories.
  • Do not use a damaged product. Obey the maintenance schedule. Only do the maintenance work that you find an instruction about in this manual. An approved service center must do all other maintenance work.
  • This manual cannot include all situations that can occur when you use the product. Be careful and use your common sense. Do not operate the product or do maintenance on the product if you are not sure about of the situation. Speak to a product expert, your dealer, service agent or approved service center for information.
  • Disconnect the spark plug cable before you assemble the product, put the product into storage or do maintenance.
  • Do not use the product if it is changed from its initial specification. Do not change a part of the product without approval from the manufacturer. Only use parts approved by the manufacturer. Injury or death is a possible result of incorrect maintenance.
  • Do not breathe in the fumes from the engine. Longterm inhalation of the engine’s exhaust fumes is a health risk.
  • Do not start the product indoors or near flammable material. The exhaust fumes are hot and can contain a spark which can start a fire. Not sufficient airflow can cause injury or death because of asphyxiation or carbon monoxide.

4

  • When you use this product the engine makes an electromagnetic field. The electromagnetic field can cause damage to medical implants. Speak to your physician and medical implant manufacturer before you operate the product.
  • Do not let a child operate the product. Do not let a person without knowledge of the instructions operate the product.
  • Make sure that you always monitor a person, with decreased physical capacity or mental capacity, that uses the product. A responsible adult must be there at all times.
  • Lock the product in an area that children and unapproved persons cannot access.
  • The product can eject objects and cause injuries. Obey the safety instructions to decrease the risk of injury or death.
  • Do not go away from the product when the engine is on.
  • The operator of the product is responsible if an accident occurs.
  • Make sure that parts are not damaged before you use the product.
  • Make sure that you are at minimum 15 m (50 ft) away from other persons or animals before you use the product. Make sure that persons in the adjacent area know that you will use the product.
  • Refer to national or local laws. They can prevent or decrease the operation of the product in some conditions.
  • Do not use the product if you are fatigued or influenced by alcohol, drugs or medicine. They can have effects on your vision, alertness, coordination or judgment.
Safety instructions for assembly

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 32

WARNING: Read the warning instructions that follow before you use the product.

  • Remove the spark plug cap from the spark plug before you assemble the product.
  • Use approved protective gloves.
  • Make sure that you assemble the cover and shaft correctly before you start the engine.
Safety instructions for operation
  • Make sure the product is fully assembled before you use it.
  • Before a start, move the product 3 m (10 ft) away from the position where you filled the fuel tank. Put the product on a flat surface. Make sure that the cutting attachment does not touch the ground or other objects.
  • The product can cause objects to eject, which can cause damage to the eyes. Always use an approved eye protection when you operate the product.
  • Be careful, a child can come near the product without your knowledge during operation.
  • Do not operate the product if there are persons in the work area. Stop the product if a person goes into the work area.
  • Make sure that you are always in control of the product.
  • Do not use the product if you cannot receive aid if an accident occurs. Always make sure others know you will operate the product before you start to operate the product.
  • Do not turn with the product before you make sure that no persons or animals are in the safety area.
  • Remove all unwanted materials from the work area before you start. If the cutting attachment hits an object, the object can eject and cause injury or damage. Unwanted material can wind around the cutting attachment and cause damage.
  • Do not use the product in bad weather (fog, rain, strong winds, risk of lightning or other weather conditions.). Dangerous conditions (such as slippery surfaces) can occur because of bad weather.
  • Make sure that you can move freely and work in a stable position.

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  • Make sure that you cannot fall when you use the product. Do not tilt when you operate the product.
  • Always hold the product with your two hands. Hold the product on the right side of your body.

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  • Operate the product with the cutting attachment below your waist.
  • If the choke control is in the choke position when the engine starts, the cutting attachment starts to turn.
  • Do not touch the bevel gear after the engine stops. The bevel gear is hot after the engine stops. Hot areas can cause injury.
  • Stop the engine before you move the product.

5

  • Do not put down the product with the engine on.
  • Before you remove the unwanted materials from the product, stop the engine and wait until the cutting attachment stops. Let the cutting attachment stop before you or an aid remove the cut material.
Personal protective equipment

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WARNING: Read the warning instructions that follow before you use the product.

  • Always use approved personal protective equipment when you use the product. Personal protective equipment cannot fully prevent injury but it decreases the degree of injury if an accident does occur. Let your dealer help you select the right equipment.
  • Use a protective helmet where there is a risk of falling objects.

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  • Use approved hearing protection that provides adequate noise reduction. Long-term exposure to noise can result in permanent hearing impairment.

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  • Use approved eye protection. If you use a visor, you must also use approved protective goggles. Approved protective goggles must comply with the ANSI Z87.1 standard in the USAs or EN 166 in EU countries.

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  • Use gloves when necessary, for example when you attach, examine or clean the cutting equipment.

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  • Use sturdy non-slip boots.

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  • Use clothing made of a strong fabric. Always use heavy, long pants and long sleeves. Do not use loose clothing that can catch on twigs and branches. Do not wear jewelry, short pants, sandals or go with bare feet. Put your hair up safely above shoulder level.
  • Keep first aid equipment close at hand.

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Safety devices on the product

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 42WARNING: Read the warning instructions that follow before you use the product.

  • Do not use a product with defective safety devices.
  • Do a check of the safety devices regularly. Refer to Maintenance schedule on page 14.
  • If the safety devices are defective, speak to your Husqvarna servicing dealer.

6

To do a check of the throttle trigger lockout

1. Make sure that the throttle trigger lockout (A) and throttle trigger (B) move freely and that the return spring works correctly.

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2. Push down the throttle trigger lockout and make sure that it goes back to its initial position when you release it.

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3. Make sure that the throttle trigger is locked at the idle position when the throttle trigger lockout is released.

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4. Start the product and apply full throttle.
5. Release the throttle trigger and make sure that the blades stop and stay stationary.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 46WARNING: If the blades move when the throttle trigger is in the idle position, then the carburetor idle speed must be adjusted. Refer to To adjust the idle speed on page 14.

To do a check of the stop switch

1. Start the engine.

2. Move the stop switch to the stop position and make sure that the engine stops.

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To do a check of the cutting attachment guard

The cutting attachment guard stops objects that ejects in the direction of the operator. It also prevents injuries that occur if you touch the cutting attachment.

1. Stop the engine.
2. Do a visual check for damages, for example cracks.

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3. Replace the cutting attachment guard if it is damaged.

Muffler
  • Do not use an engine with a damaged muffler. A damaged muffler increases the noise level and the risk of fire. Keep a fire extinguisher near.
  • Examine regularly that the muffler is attached to the product.
  • Do not touch the engine or the muffler when then engine is on. Do not touch the engine or the muffler for a while after the engine stops. Hot surfaces can cause injuries.
  • A hot muffler can cause a fire. Be careful, if you use the product near flammable liquids or fumes.
  • Do not touch the parts in the muffler, if the muffler is damaged. The parts can contain some carcinogenic chemicals.
Cutting attachment

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 49WARNING: Read the warning instructions that follow before you use the product.

  • Do the regular maintenance. Let an approved service center regularly examine the cutting attachment to do adjustments or repairs.

7

  • The performance of the cutting attachment increases.
  • The life of the cutting attachment increases.
  • The risk of accidents decreases.
  • Only use an approved cutting attachment guard. Refer to Accessories on page 19.
  • Do not use a damaged cutting attachment.
Fuel safety

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 50WARNING: Read the warning instructions that follow before you use the product.

  • Do not mix the fuel indoor or near a heat source.
  • Do not start the product if there is fuel or engine oil on the product. Remove the unwanted fuel/oil and let the product dry. Remove unwanted fuel from the product.
  • If you spill fuel on your clothing, change clothing immediately.
  • Do not get fuel on your body, it can cause injury. If you get fuel on your body, use a soap and water to remove the fuel.
  • Do not start the engine if you spill oil or fuel on the product or on your body.
  • Do not start the product if the engine has a leak. Examine the engine for leaks regularly.
  • Be careful with fuel. Fuel is flammable and the fumes are explosive and can cause injuries or death.
  • Do not breathe in the fuel fumes, it can cause injury. Make sure that there is a sufficient airflow.
  • Do not smoke near the fuel or the engine.
  • Do not put warm objects near the fuel or the engine.
  • Do not add the fuel when the engine is on.
  • Make sure that the engine is cool before you refuel.
  • Before you refuel, open the fuel tank cap slowly and release the pressure carefully.
  • Do not add fuel to the engine in an indoor area. Not sufficient airflow can cause injury or death because of asphyxiation or carbon monoxide.
  • Tighten the fuel tank cap carefully or a fire can occur.
  • Move the product at a minimum of 3 m (10 ft) from the position where you filled the tank before a start.
  • Do not put too much fuel in the fuel tank.
  • Make sure that a leak cannot occur when you move the product or fuel container.
  • Do not put the product or a fuel container where there is an open flame, spark or pilot light. Make sure that the storage area does not contain an open flame.
  • Only use approved containers when you move the fuel or put the fuel into storage.
  • Empty the fuel tank before long-term storage. Obey the local law on where to dispose fuel.
  • Clean the product before long-term storage.
  • Remove the spark plug cap before you put the product into storage to make sure that the engine does not start accidentally.
Safety instructions for maintenance

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 51WARNING: Read the warning instructions that follow before you use the product.

  • Stop the engine, make sure that the cutting attachment stops and let the product cool down before you do the maintenance.
  • Disconnect the spark plug cap before you do the maintenance.
  • The exhaust fumes from the engine contain carbon monoxide, an odourless, poisonous and very dangerous gas that can cause death. Do not run the product indoors or in closed spaces.
  • The exhaust fumes from the engine are hot and can contain sparks. Do not run the product indoors or near flammable material.
  • Accessories and changes to the product that are not approved by the manufacturer, can cause serious injury or death. Do not change the product. Always use original accessories.
  • If the maintenance is not done correctly and regularly, there is an increased risk of injury and damage to the product.
  • Only do the maintenance as this operator’s manual recommends. Let an approved Husqvarna service agent do all other servicing.
  • Let an approved Husqvarna service agent do servicing on the product regularly.
  • Replace damaged, worn or broken parts.
  • Refer to the instructions for the cutting attachment for correct procedure to install the trimmer cord and correct cord diameter.
  • Keep the teeth of the blade correctly sharpened. Obey our recommendations. Also refer to the instructions on the blade package.

8

Assembly

Introduction

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 52WARNING: Before you assemble the product, you must read and understand the safety chapter.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 53WARNING: Remove the spark plug cable from the spark plug before you assemble the product.

To attach the loop handle

1. Attach the loop handle to the shaft in compliance with the illustration and tighten.

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2. Make sure that the loop handle attaches between the arrows on the shaft.

To attach the cutting attachment guard and the trimmer head (straight shaft)

1. Attach the cutting attachment guard (A) to the shaft with the bolt (L).
2. Attach the drive disc (B) to the output shaft.
3. Turn the output shaft until the hole in the drive disc aligns with the hole in the gear housing.
4. Put a small screwdriver (C) in the hole to lock the shaft.

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5. Turn the trimmer head (H) counterclockwise to tighten the trimmer head to the gearbox. (Left hand threads.)

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To attach the cutting attachment guard and trimmer head (curved shaft)

1. Attach the guard. Tighten the nut.

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2. Attach the dust cup on the shaft.

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3. Hold the dust cup with an adjustable wrench to make sure the shaft does not turn.
4. Attach the trimmer head to the shaft. Turn the trimmer head clockwise.

9

To assemble the two-piece shaft

1. Turn the knob to loosen the coupling.

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2. Align the tab (A) with the arrow (B) on the coupling.

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3. Push the shaft into the coupling until it clicks into position.

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4. Tighten the knob fully.

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To disassemble the two-piece shaft

1. Turn the knob 3 turns or more to loosen the coupling.

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2. Push and hold the button (C).
3. Hold tight in the end of the shaft that the engine is attached to.
4. Pull the attachment straight out of the coupling.

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Operation

Introduction

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 65WARNING: Before you operate the product, you must read and understand the safety chapter.

Fuel

This product has a two-stroke engine.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 66CAUTION: Incorrect type of fuel can result in engine damage. Use a mixture of gasoline and two-stroke oil.

10

Premixed fuel
  • Use Husqvarna premixed alkylate fuel of a good quality, for best performance and extension of the engine life. This fuel contains less harmful chemicals compared to regular fuel, which decreases harmful exhaust fumes. The quantity of remains after combustion is lower with this fuel, which keeps the components of the engine more clean.
To mix fuel

Gasoline

  • Use good quality unleaded gasoline with a maximum of 10% ethanol contents.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 67CAUTION: Do not use gasoline with an octane grade less than 90 RON/87 AKI. Use of a lower octane grade can cause engine knocking, which causes engine damages.

  • We recommend that you use gasoline of a higher octane grade for work with continuously high rpm.

Two-stroke oil

  • For best results and performance use Husqvarna two-stroke oil.
  • If Husqvarna two-stroke oil is not available, use a two-stroke oil of good quality for air-cooled engines. Speak to your servicing dealer to select the correct oil.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 68CAUTION: Do not use two-stroke oil for water-cooled outboard engines, also referred to as outboard oil. Do not use oil for four-stroke engines.

To mix gasoline and two-stroke oil
Gasoline, liter Two-stroke oil, liter
2% (50:1)
5 0.10
10 0.20
15 0.30
20 0.40
US gallon US fl. oz.
1 2 ½
2 ½ 6 ½
5 12 ⅞

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 69CAUTION: Small errors can influence the ratio of the mixture drastically when you mix small quantities of fuel. Measure the quantity of oil carefully and make sure that you get the correct mixture.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 70

  1. Fill half the quantity of gasoline in a clean container for fuel.
  2. Add the full quantity of oil.
  3. Shake the fuel mixture.
  4. Add the remaining quantity of gasoline to the container.
  5. Carefully shake the fuel mixture.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 71CAUTION: Do not mix fuel for more than 1 month at a time.

To fill the fuel tank

1. Clean the area around the fuel tank cap.

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2. Shake the container and make sure that the fuel is fully mixed.
3. Tighten the fuel tank cap carefully.
4. Move the product 3 m/10 ft or more away from the refueling area and fuel source before starting.

Note: To see where the fuel tank is on your product, refer to Product overview on page 2.

To examine before start
  1. Make sure that the product has no missing, damaged, loose or worn parts.
  2. Make sure that nuts, screws and bolts are tightened.
  3. Make sure that the trimmer head is not damaged.
  4. Make sure that the air filter is not clogged.
  5. Make sure that the safety devices on the product are not defective.
  6. Make sure that the product has no fuel leaks.
To start a cold engine

1. Push the air purge bulb 10 times.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 73

2. Pull the choke control up.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 74

3. Hold the body of the product on the ground with your left hand.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 75

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 76CAUTION: Do not step on the product.

4. Pull the starter rope handle slowly until you feel some resistance. When you feel resistance, pull the starter rope handle quickly and with force.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 77WARNING: Do not twist the starter rope around your hand.

5. Continue to pull the starter rope handle until the engine starts.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 78CAUTION: Do not pull the starter rope to full extension and do not let go of the starter rope handle. This can cause damage to the product. Release the starter rope slowly.

6. Set the choke control to the operation position and apply full throttle. The throttle trigger automatically disengages from the start position.

To start a warm engine
  1. Push the air purge bulb 10 times.
  2. Pull the starter rope until the engine starts.
To stop
  • Push the stop switch to stop the engine.

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Note: The stop switch automatically goes back to its initial position.

To trim the grass

1. Hold the trimmer head immediately above the ground at an angle. Do not push the trimmer line into the grass.

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2. Decrease the length of the trimmer line by 10-12 cm / 4-4.75 in.
3. Decrease the engine speed to decrease the risk of damage to plants.
4. Use 80 % throttle when you cut grass near objects.

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12

To clear grass with a grass blade
  1. Grass blades and grass cutters must not be used on woody stems.
  2. A grass blade is used for all types of tall or coarse grass.
  3. The grass is cut down with a sideways, swinging movement, where the movement from right-to-left is the clearing stoke and the movement from left-to right is the return stoke. Let the left-hand side of the blade (between 8 and 12 o’clock) do the cutting.
  4. if the blade is angled to the left when clearing grass, the grass will collect in a line, which makes it easier to collect, e.g. by raking.
  5. Try to work rhythmically. Stand firmly with your feet apart. Move forward after the return stoke and stand firmly again.
  6. Let the support cup rest lightly against the ground. It is used to protect the blade from hitting the ground.
  7. Reduce the risk of material wrapping around the blade by always work at full throttle and avoid the previously cut material during the return stoke.
  8. Stop the engine, unclip the harness and place the machine on the ground before you start to collect the cut material.
To cut the grass

1. Make sure that the trimmer line is parallel to the ground when you cut the grass.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 82

2. Do not push the trimmer head to the ground. This can cause damage to the product.

3. Move the product from side to side when you cut grass. Use full speed.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 83

To sweep the grass

The airflow from the rotating trimmer line can be used to remove cut grass from an area.

  1. Hold the trimmer head and the trimmer line parallel to the ground and above the ground.
  2. Apply full throttle.
  3. Move the trimmer head from side to side and sweep the grass.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 84WARNING: Clean the trimmer head cover each time you assemble new trimmer line to prevent unbalance and vibrations in the handles. Also do a check of the other parts of the trimmer head and clean it if necessary.

Grass trimmer head
  • Make sure that you wind the grass trimmer line tightly and equally around the drum to decrease the vibration.
  • Use only the approved grass trimmer heads and grass trimmer lines. Refer to Accessories on page 19.
  • Use a correct length of the grass trimmer line. A long grass trimmer line uses more engine power than a short grass trimmer line.
  • Make sure that the cutter on the cutting attachment guard is not damaged.
  • Soak the grass trimmer line in water for 2 days before you attach the grass trimmer line to the product. This increases the life of the grass trimmer line.
  • Refer to the instructions for the cutting attachment to use the correct procedure to load the cord and the correct cord diameter.

13

Maintenance

Introduction

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 85WARNING: Before you do maintenance, you must read and understand the safety chapter.

For all servicing and repair work on the product, special training is necessary. We guarantee the availability of professional repairs and servicing. If your dealer is not a service agent, speak to them for information about the nearest service agent.

Maintenance schedule
Maintenance Daily Weekly Monthly
Clean the external surface. X
Clean the air filter. Replace if it is necessary. X
Examine the function of the throttle trigger lock and the throttle. X
Examine the stop switch. X
Examine the guards. X
Examine the trimmer head. X
Examine the locknut. X
Examine for fuel leaks. X
Make sure that the grass blade is aligned with the center, that it is sharp and does not have damages on the blade or the center hole. X
Make sure that the cutting attachment does not rotate at idle speed. X
Apply grease to the two-piece shaft. X
Examine the starter rope handle and the starter rope. X
Examine the bevel gear grease. X
Clean the external surface of the spark plug. Remove the spark plug and measure the electrode gap. Adjust the electrode gap or replace the spark plug. X
Clean the cooling system. X
Clean or replace the spark arrestor screen on the muffler. X
Clean the external surface of the carburetor and the area around it. X
Examine the fuel filter for contamination. X
Examine the fuel hose for damage. X
Examine all cables and connections. X
Examine the clutch, the clutch springs and the clutch drum for wear. X
Replace the spark plug. X
To adjust the idle speed

Make sure that the air filter is clean and the air filter cover is attached before you adjust the idle speed.

14

1. Turn the idle speed screw T, which is identified with a “T” mark, clockwise until the cutting attachment starts to rotate.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 86

2. Turn the idle speed screw T, which is identified with a “T” mark, counterclockwise until the cutting attachment stops.
3. The idle speed must be below the speed when the cutting attachment starts to rotate. The idle speed is correct when the engine operates smoothly in all positions.

To do maintenance on the spark arrester screen
  • Use a wire brush to clean the spark arrester screen.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 87

To clean the cooling system
  • Clean the air intake (A) on the starter and the cooling fins (B) on the cylinder with a brush.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 88

To examine the spark plug

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 89CAUTION: Use the recommended spark plug. Make sure that the replacement is the same as the manufacturer supplied part. An incorrect spark plug can cause damage to the product. Make sure that the spark plug is installed with a supressor. Speak to your servicing dealer for more information.

1. Examine the spark plug when:
a) the engine is low on power.
b) the engine is not easy to start.
c) the engine does not operate correctly at idle speed.

2. If, the engine is not easy to start or operate, examine the spark plug for unwanted materials. To decrease the risk of unwanted material on the spark plug electrodes:
a) make sure that the idle speed is correctly adjusted.
b) make sure that the fuel mixture is correct.
c) make sure that the air filter is clean.

3. Clean the spark plug if it is dirty. Make sure that the electrode gap is correct. Refer to Technical data on page 18.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 90

4. Replace the spark plug when it is necessary.

To apply grease to the two-piece shaft
  • Apply grease to the end of the drive shaft after each 30 hours of operation.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 91

To clean the air filter

15

1. Remove the air filter cover and remove the air filter.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 92

2. Clean the air filter with warm soap water. Make sure that the air filter is dry before you install it.
3. Replace the air filter if it is too dirty to fully clean it. Always replace a damaged air filter.
4. If your product has a foam air filter, apply air filter oil. Only apply air filter oil to a foam filter. Do not apply oil to a felt filter.

To apply air filter oil to the air filter

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 93CAUTION: Always use special air filter oil on foam air filters. Do not use other types of oil.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 94WARNING: Do not get oil on your body.

1. Remove the air filter cover and remove the air filter.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 95

2. Put the air filter in a plastic bag.
3. Put the air filter oil in the plastic bag.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 96

4. Push the plastic bag to make sure the oil supplies equally across the air filter.
5. Push on the air filter, while in the bag, to remove the air filter oil that is not necessary. Remove the air filter from the bag.
6. Install the air filter.

To add grease to the bevel gear
  • Make sure that the bevel gear is filled ¾ full with bevel gear grease.

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 97

16

Troubleshooting

The engine does not start
Check Possible cause Procedure
Starter pawls. The starter pawls cannot move freely. Remove the starter cover and clean around the starter pawls.
Let an approved servicing dealer help you.
Fuel tank. Incorrect fuel type. Drain the fuel tank and fill with correct fuel.
Spark plug. The spark plug is dirty or wet. Make sure that the spark plug is dry and clean.
The spark plug electrode gap is incorrect. Clean the spark plug. Make sure that the electrode gap is correct. Make sure that the spark plug has a supressor.
Refer to Technical data on page 18 for correct electrode gap.
The spark plug is loose. Tighten the spark plug.
The engine starts but stops again
Check Possible cause Procedure
Fuel tank Incorrect fuel type. Empty the fuel tank and fill it with correct fuel.
Air filter The air filter is clogged. Clean the air filter.

Transportation and storage

  • Always allow the product to cool down before storage.
  • For storage and transportation of the product and fuel, make sure that there are no leaks or fumes. Sparks or open flames, for example from electrical devices or boilers, can start a fire.
  • Always use approved containers for storage and transportation of fuel.
  • Empty the fuel before transportation or before long term storage. Discard the fuel at an applicable disposal location.
  • Attach the transport guard during transportation and storage.
  • Remove the spark plug cap from the spark plug.
  • Attach the product during transportation. Make sure that it cannot move.
  • Clean and do servicing on the product before long term storage.

17

Technical data

122C 122LK
Engine
Cylinder displacement, cu.in/cm3 1.32/21.7 1.32/21.7
Idle speed, rpm 2900 2900
Recommended max. speed, rpm 7200 9100
Speed of output shaft, rpm 7200 6232
Power / Max. engine output, acc. to ISO 8893, kW/hp @ rpm 0.6/0.8 @ 7800 0.6/0.8 @ 7800
Catalytic converter muffler Yes Yes
Speed-regulated ignition system No No
Emissions Durability Period according to California Air Resources Board, h. 50 50
Ignition system
Spark plug HQT-4 672201 HQT-4 672201
Electrode gap, inch/mm 0.02/0.5 0.02/0.5
Fuel system
Fuel tank capacity, US Pint/l 0.63/0.3 0.63/0.3
Weight
Weight without fuel, cutting attachment and guard, lbs/kg 9.7/4.4 10.6/4.8
Noise emissions1
Sound power level, measured, dB(A) 102 104
Sound power level, guaranteed (LWA) , dB(A) 104 108
Noise levels2
Equivalent sound pressure level at the operator’s ear, measured according to EN ISO 11806 and ISO 22868, dB(A): 88 90
Vibration levels3
Equivalent vibration level (ahv, eq) equipped with trimmer head, left handle, m/s2 5.0 3.6
Equivalent vibration level (ahv, eq) equipped with trimmer head, right handle, m/s2 3.6 3.5
  1. Noise emissions in the environment measured as sound power (LWA) in conformity with EC directive 2000/14/EC. Reported sound power level for the product has been measured with the original cutting attachment that gives the highest level. The difference between guaranteed and measured sound power is that the guaranteed sound power also includes dispersion in the measurement result and the variations between different products of the same model according to Directive 2000/14/EC.
  2. Reported data for equivalent sound pressure level for the product has a typical statistical dispersion (standard deviation) of 1 dB (A).
  3. Reported data for equivalent vibration level has a typical statistical dispersion (standard deviation) of 1 m/s².

18

Accessories

122C
Approved accessories Type Cutting attachment guard
Threaded shaft 3/8 R
Trimmer head T25 (Ø 2.0 – 2.7 mm cord) 574 47 95-01
T25C (Ø 2.0 – 2.7 mm cord) 574 47 95-01
122LK
Approved accessories Type Cutting attachment guard
Threaded shaft M10
Trimmer head T25 (Ø 2.0 – 2.7 mm cord) 574 19 87-01

The following attachments are recommended for the specified models.

Approved accessories Art No. Use with
Clean sweep attachment with shaft SR600 537 19 67-01 122LK
Hedge trimmer attachment with shaft HA 850 537 19 66-06 122LK
Edger attachment with shaft 537 19 69-01 122LK
Saw attachment with shaft PA 1100 537 18 33-16 122LK
Saw attachment without shaft PA 537 18 33-11 122LK
Cultivator attachment with shaft CA 150 537 42 54-01 122LK
Trimmer attachment with shaft TA 850 537 35 35-01 122LK
Cultivator attachment with shaft CAC 952 71 19-07 122LK
Edger attachment EAC 952 71 19-08 122LK
Pole saw attachment PAC 952 71 19-10 122LK
Blower attachment BAC 952 71 19-11 122LK

19

Warranty

CALIFORNIA, U.S FEDERAL, AND CANADA EXHAUST AND EVAPORATIVE EMISSIONS CONTROL WARRANTY STATEMENT

YOUR WARRANTY RIGHTS AND OBLIGATIONS

The California Air Resources Board (CARB), U.S. Environmental Protection Agency (EPA), Environment and Climate Change Canada and Husqvarna Professional Products, Inc. are pleased to explain the exhaust and evaporative emissions (“emissions”) control system warranty on your 2020-2021* small off-road engine. In California, new equipment that use small offroad engines must be designed, built, and equipped to meet State’s stringent anti-smog standards. Husqvarna Professional Products, Inc. must warrant the emissions control system on your small off-road engine for the periods of time listed below provided there has been no abuse, neglect or improper maintenance of your small off-road engine or equipment leading to the failure of the emissions control system. Your emissions control system may include parts such as the carburetor or fuel injection system, the ignition system, catalytic convertor, fuel tanks, fuel lines (for liquid fuel and fuel vapors), fuel caps, valves, canisters, filters, clamps and other associated components. Also included may be hoses, belts, connectors, and other emission-related assemblies. Where a warrantable condition exists, Husqvarna Professional Products, Inc. will repair your small off-road engine at no cost to you including diagnosis, parts and labor.

MANUFACTURERS WARRANTY COVERAGE

The exhaust and evaporative emissions control system on your small off-road engine is warranted for two years. If any emissions-related part on your small off-road engine is defective, the part will be repaired or replaced by Husqvarna Professional Products, Inc..

OWNERS WARRANTY RESPONSIBILITIES

  • As the small off-road engine owner, you are responsible for performance of the required maintenance listed in your owner’s manual. Husqvarna Professional Products, Inc. recommends that you retain all receipts covering maintenance on your small off-road engine, but Husqvarna Professional Products, Inc. cannot deny warranty coverage solely for the lack of receipts or for your failure to ensure the performance of all scheduled maintenance.
  • As the small off-road engine owner, you should however be aware that Husqvarna Professional Products, Inc. may deny you warranty coverage if your small off-road engine or a part has failed due to abuse, neglect, or improper maintenance or unapproved modifications.
  • You are responsible for presenting your small offroad engine to a Husqvarna Professional Products, Inc. authorized servicing dealer as soon as the problem exists. The warranty repairs shall be completed in a reasonable amount of time, not to exceed 30 days. If you have any questions regarding your warranty rights and responsibilities, you should contact Husqvarna Professional Products, Inc. in USA at 1-800-487-5951, in CANADA at 1-800-805-5523 or send e-mail correspondence to [email protected] or [email protected].
WARRANTY COMMENCEMENT DATE

The warranty period begins on the date the engine or equipment is delivered to an ultimate purchaser.

LENGTH OF COVERAGE

Husqvarna Professional Products, Inc. warrants to the ultimate purchaser and each subsequent owner that the engine or equipment is designed, built, and equipped so as to conform with all applicable regulations adopted by CARB and EPA, and is free from defects in materials and workmanship that causes the failure of a warranted part for a period of two years.

WHAT IS COVERED

REPAIR OR REPLACEMENT OF PARTS: Repair or replacement of any defective warranted part will be performed at no charge to you at a brand authorized servicing dealer. Except for repairs and replacement under this Emission Control Warranty, you may choose a repair shop or other person to maintain, replace or repair emission control devices and systems. However, Husqvarna Professional Products, Inc. recommends that all maintenance, replacement and repairs of emission control devices and systems be performed by a brand authorized servicing dealer.

IMPORTANT: This product is compliant with U.S. EPA Phase 3 regulations for exhaust and evaporative emissions. To ensure EPA Phase 3, California Air Resources Board and Environment and Climate Change Canada regulation, we recommend using only genuine product branded replacement parts. Use of noncompliant replacement parts is a violation of federal and state laws.

WARRANTY PERIOD: Any warranted part which is not scheduled for replacement as required maintenance, or which is scheduled only for regular inspection to the effect of “repair or replace as necessary” is warranted for 2 years (or time defined in the product warranty statement, whichever is longer) from the date of purchase by the initial consumer purchaser. Any warranted part which is scheduled for replacement as required maintenance is warranted for the period of the time up to the first scheduled replacement for that part.

20

Any part repaired or replaced under the warranty must be warranted for the remaining warranty period.

DIAGNOSIS: You will not be charged for diagnostic labor that leads to the determination that a warranted part is in fact defective, provided that such diagnostic work is performed at a brand authorized servicing dealer.

OTHER DAMAGES: Husqvarna Professional Products, Inc. will repair other engine components caused by the failure of a warranted part still under warranty.

EMISSION WARRANTY PARTS LIST
  1. Carburetor and intake parts or fuel injection system.
  2. Air filter and fuel filter covered up to maintenance schedule.
  3. Spark Plug, covered up to maintenance schedule.
  4. Ignition Module.
  5. Mufflers with catalyst and exhaust manifolds.
  6. Fuel tank, fuel lines (for liquid fuel and fuel vapors), fuel cap, carbon canister and tip-over/anti-slosh valves as applicable.**
  7. Electronic Controls, Vacuum, temperature, and time sensitive valves and switches.
  8. Hoses, connectors, and assemblies.
  9. All other components the failure of which would increase the engine’s exhaust and evaporative emissions of any regulated pollutant as set forth at the following:
    For California see California Code of Regulations, 13 CCR §2405(d) and 2760(d).
    For U.S. and Canada see US Federal Code of Regulations, 40 C.F.R 1068 Appendix I (iii).
WHAT IS NOT COVERED

All failures caused by abuse, neglect, unapproved modifications, misuse or improper maintenance are not covered.

ADD -ON OR MODIFIED PARTS: Add-on or modified parts that are not exempted by CARB or EPA may not be used. The use of any non-exempted add-on or modified parts will be grounds for disallowing a warranty claim. Husqvarna Professional Products, Inc. will not be liable to warrant failures of warranted parts caused by the use of a non-exempted add-on or modified part.

HOW TO FILE A CLAIM

If you have any questions regarding your warranty rights and responsibilities, you should contact your nearest authorized servicing dealer or call Husqvarna Professional Products, Inc. in USA at 1-800-487-5951, in CANADA at 1-800-805-5523 or send e-mail correspondence to [email protected] or [email protected].

WHERE TO GET WARRANTY SERVICE

Warranty services or repairs are provided through all Husqvarna Professional Products, Inc. authorized servicing dealers. If the nearest authorized servicing dealer is more than 100 miles from your location, Husqvarna Professional Products, Inc. will arrange and pay for the shipping costs to and from a brand authorized servicing dealer or otherwise arrange for warranty service in accordance with applicable regulations.

MAINTENANCE, REPLACEMENT AND REPAIR OF EMISSION-RELATED PARTS

Any replacement part may be used in the performance of any warranty maintenance or repairs and must be provided without charge to the owner. Such use will not reduce the warranty obligations of the manufacturer.

MAINTENANCE STATEMENT

The owner is responsible for the performance of all required maintenance, as defined in the owner’s manual.

* Current and following model year will be updated annually in the warranty statement provided to the consumer. For example, in 2012 model year, 2012-2013 will be specified.

** Evaporative emission parts.

21

Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 98

www.husqvarna.com

Original instructions

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Husqvarna Grass Trimmer With A Combustion Engine Owner’s Manual  & troubleshooting 99 2019-10-10

References

FAQ


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