Husqvarna 7021R manual Lawn Mower, Engine

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MAINTENANCE

LAWN MOWER

Always observe safety rules when performing any main- tenance.

TIRES

Keep tires free of gasoline, oil, or insect control chem- icals which can harm rubber.

Avoid stumps, stones, deep ruts, sharp objects and other hazards that may cause tire damage.

BLADE ADAPTER

KEY

CRANKSHAFT

 

 

KEYWAY

BLADE

 

 

LOCK

 

 

WASHER

 

 

DRIVE WHEELS

Check rear drive wheels each time you mow to be sure they move freely. The wheels not turning freely means trash, grass cuttings, etc., may be inside the drive wheel and dust cover area and must be cleaned out to free drive wheels.

If necessary to clean drive wheels, check both rear wheels.

BLADE CARE

For best results, mower blade must be kept sharp. Replace bent or damaged blades.

CAUTION: Useonlyareplacementblade approved by the manufacturer of your mower. Using a blade not approved by the manufacturer of your mower is hazardous, could damage your mower and void your warranty.

TO REMOVE BLADE (See Fig. 14)

1.Disconnect spark plug wire from spark plug and place wire where it cannot come in contact with plug.

2.Turn lawn mower on its side. Make sure air fi lter and carburetor are up.

3.Use a wood block between blade and mower housing to prevent blade from turning when removing blade bolt.

NOTE: Protect your hands with gloves and/or wrap blade with heavy cloth.

4.Remove blade bolt by turning counter-clockwise.

5.Removebladeandattachinghardware(bolt,lockwasher and hardened washer).

NOTE: Remove the blade adapter and check the key inside hub of blade adapter. The key must be in good condition to work properly. Replace adapter if damaged.

TO REPLACE BLADE (See Fig. 14)

1.Position the blade adapter on the engine crankshaft. Be sure key in adapter and crankshaft keyway are aligned.

2.Position blade on the blade adapter aligning the two

(2)holes in the blade with the raised lugs on the adapter.

3.Be sure the trailing edge of blade (opposite sharp edge) is up toward the engine.

4.Install the blade bolt with the lock washer and hardened washer into blade adapter and crankshaft.

5.Use block of wood between blade and lawn mower housing and tighten the blade bolt, turning clockwise.

The recommended tightening torque is 35-40 ft. lbs.

IMPORTANT: BLADE BOLT IS HEAT TREATED. IFBOLT NEEDS

 

REPLACING, REPLACE ONLYWITHAPPROVED BOLT SHOWN

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IN THE REPAIR PARTS SECTION OF THIS MANUAL.

BLADE HARDENED

BOLT WASHER

 

BELT

TRAILING EDGE

CRANKSHAFT RETAINER

FIG. 14

TO SHARPEN BLADE

NOTE: We do not recommend sharpening blade - but if you do, be sure the blade is balanced.

Care should be taken to keep the blade balanced. An unbalanced blade will cause eventual damage to lawn mower or engine.

The blade can be sharpened with a fi le or on a grinding wheel. Do not attempt to sharpen while on the mower.

To check blade balance, drive a nail into a beam or wall. Leave about one inch of the straight nail exposed. Place center hole of blade over the head of the nail. If blade is balanced, it should remain in a horizontal position. If either end of the blade moves downward, sharpen the heavy end until the blade is balanced.

GRASS CATCHER

The grass catcher may be hosed with water, but must be dry when used.

Check your grass catcher often for damage or dete- rioration. Through normal use it will wear. If catcher needs replacing, replace only with approved replace- ment catcher shown in the Repair Parts section of this manual. Give the lawn mower model number when ordering.

GEAR CASE

To keep your drive system working properly, the gear case and area around the drive should be kept clean and free of trash build-up. Clean under the drive cover twice a season.

The gear case is fi lled with lubricant to the proper level at the factory. The only time the lubricant needs attention is if service has been performed on the gear case.

If lubricant is required, use only Texaco Starplex Pre- mium 1 Grease, Part No. 750369. Do not substitute.

ENGINE

Maintenance, repair, or replacement of the emission con- trol devices and systems, which are being done at the customers expense, may be performed by any non-road engine repair establishment or individual. Warranty repairs must be performed by an authorized engine manufacturer's service outlet.

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Contents 7021R III. Children Safe Operation Practices for Walk-Behind MowersII. Slope Operation General OperationTable of Contents To Remove Lawn Mower from Carton AssemblyHOW to SET UP Your Lawn Mower To Install AttachmentsKnow Your Lawn Mower Meets Cpsc Safety RequirementsOperation Engine Zone Control HOW to USE Your Lawn MowerEngine Speed To Convert Mower To Attach Grass Catcher See FigTo Empty Grass Catcher See Fig ADD OIL See Fig Before Starting EngineTo Start Engine See Fig Mowing TipsADD Gasoline See Fig To Stop EngineBefore Each USE MaintenanceLubrication Chart General RecommendationsEngine Lawn MowerMuffler CleaningClean Under Drive Cover AIR FilterTo Remove Drive Belt See Service and AdjustmentsTo Adjust Cutting Height Rear DeflectorHandle See Figs To Adjust Handle See FigStorage CarburetorCylinder OtherFuel System Engine OILProblem Cause Correction Troubleshooting PointsService Notes Warranty Statement