Husqvarna 7021CH1 Lawn Mower User Manual

MAINTENANCE

BEFORE

EACH

USE

AFTER

EACH

USE

EVERY

10

HOURS

EVERY

25 HOURS

OR SEASON

EVERY

100

HOURS

BEFORE

STORAGE

*

**

***

****

Check for Loose Fasteners

Clean / Inspect Grass Catcher *

Check Tires

Check Drive Wheels ***

Clean Lawn Mower ****

Clean under Drive Cover ***

Check Drive Belt / Pulleys ***

Check / Sharpen / Replace Blade

Lubrication

Clean and Recharge Battery **

Check Engine Oil level

Change Engine Oil

Clean Air Filter

Inspect Muffler

Replace Spark Plug

Replace Air Filter Paper Cartridge

Empty fuel system or add Stabilizer

(if so equipped)

Electric-Start mowers

Power-Propelled mowers

Use a scraper to clean under deck

1 - Change more often if operating under a heavy load or in high outdoor temperatures.

2 - Service more often if operating in dirty or dusty conditions.

3 - Replace blades more often when mowing in sandy soil.

4 - Charge 48 hours at end of season.

5 - And after each 5 hours of use.

GENERAL RECOMMENDATIONS

The warranty on this lawn mower does not cover items that have been subjected to operator abuse or negligence. To receive full value from the warranty, operator must maintain mower as instructed in this manual.

Some adjustments will need to be made periodically to properly maintain your unit.

At least once a season, check to see if you should make any of the adjustments described in the Service and Ad-

just ments section of this manual.

• At least once a year, replace the spark plug, clean or replace air fi lter element and check blade for wear. A new spark plug and clean/new air fi lter element assure proper air-fuel mixture and help your engine run better and last longer.

• Follow the maintenance schedule in this manual.

LUBRICATION CHART

➀

➁

➀

WHEEL

ADJUSTER

(ON EACH

WHEEL)

ENGINE OIL

➀

MULCHER

DOOR

HINGE PIN

REAR DOOR HINGE

BEFORE EACH USE

1. Check engine oil level.

2. Check for loose fasteners.

LUBRICATION

Keep unit well lubricated (See “LUBRICATION CHART”).

IMPORTANT: DO NOT OIL OR GREASE PLASTIC WHEEL

BEARINGS. VISCOUS LU BRI CANTS WILL ATTRACT DUST

AND DIRT THAT WILL SHORT EN THE LIFE OF THE SELF-

LU BRI CAT ING BEARINGS. IF YOU FEEL THEY MUST BE

TYPE LUBRICANT SPAR INGLY.

9

➀

HANDLE BRACK ET MOUNT ING PINS

➀

SPRAY LUBRICANT

➁

SEE “ENGINE” IN MAINTENANCE SECTION

MAINTENANCE

LAWN MOWER

Always observe safety rules when performing main te nance.

TIRES

• Keep tires free of gasoline, oil, or insect control chem-

i cals which can harm rubber.

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

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 hard ened washer into blade adapter and crank shaft.

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

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

IMPORTANT: BLADE BOLT IS HEAT TREATED. IF BOLT NEEDS

REPLACING, REPLACE ONLY WITH APPROVED BOLT SHOWN

IN THE REPAIR PARTS SECTION OF THIS MANUAL.

DRIVE WHEELS

Check front drive wheels each time be fore you mow to be sure they move freely.

The wheels not turning freely means trash, grass cuttings, etc. are in the drive wheel area and must be cleaned to free drive wheels.

If necessary to clean the drive wheels, be sure to clean both front wheels.

1. Remove hubcaps, locknuts and washers.

2. Remove wheels from wheel ad just ers.

3. Remove any trash or grass cuttings from inside the dust cover, pinion and/or drive wheel gear teeth.

4. Put wheels back in place.

NOTE: If after cleaning, the drive wheels do not turn freely, contact a qualifi ed service center.

BLADE ADAPTER

BLADE

LOCK

WASHER

BLADE

BOLT

HARDENED

WASHER

KEY

TRAILING EDGE

CRANKSHAFT

KEY WAY

CRANKSHAFT

BLADE CARE

For best results, mower blade must be kept sharp. Re place a bent or dam aged blade.

CAUTION: Use only a replacement blade 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. 10)

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 hous ing to prevent blade from turning when re mov ing blade bolt.

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

4. Remove blade bolt by turning counter-clockwise.

5. Remove blade and attaching hardware (bolt, lock wash er and hardened wash er).

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 dam aged.

TO REPLACE BLADE (See Fig. 10)

1. Position the blade adapter on the engine crank shaft.

Be sure key in adapter and crankshaft key way are aligned.

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

10

FIG. 10

TO SHARPEN BLADE

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

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

• The blade can be sharp ened 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 ex posed.

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.

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 ELF Multis EP00. Do not sub sti tute.

GRASS CATCHER

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

• Check your grass catcher often for damage or de te ri o ra tion. Through normal use it will wear. If catcher needs replacing, replace only with ap proved replacement catcher shown in the Repair Parts section of this manual. Give the mower model number when ordering.

MAINTENANCE

ENGINE

LUBRICATION

Use only high quality detergent oil rated with API service classifi cation SG–SL. Select the oil's SAE viscosity grade according to your expected operating temperature.

SAE VISCOSITY GRADES

SAE 30

5W-30

F

C

-20 0 30 32 40 60 80 100

-30 -20 -10 0 10 20 30

TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE

40

NOTE: Multi-viscosity oils (5W30, 10W30 etc.) improve starting in cold weather, and you should check your engine oil level frequently to avoid possible engine damage from running low on oil.

Change the oil after every 25 hours of operation or at least once a year if the lawn mower is not used for 25 hours in one year.

Check the crankcase oil level before starting the engine and after each fi ve (5) hours of continuous use. Tighten oil plug securely each time you check the oil level.

TO CHANGE ENGINE OIL (See Fig. 11)

NOTE: Before tipping lawn mower to drain oil, empty fuel tank by running engine until fuel tank is empty.

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

2. Remove engine oil cap; lay aside on a clean surface.

3. Tip lawn mower on its side as shown and drain oil into a suitable container. Rock lawn mower back and forth to remove any oil trapped inside of engine.

AIR FILTER (See Fig. 12)

Your engine will not run properly using a dirty air fi lter.

Replace paper cartridge every 100 hours of operation or every season, which ev er occurs fi rst. Service air cleaner more often under dusty conditions.

1. Loosen screws and remove cover.

2. Carefully remove cartridge.

3. Clean by gently tapping on a fl at surface. If very dirty, replace cartridge.

CAUTION: Petroleum solvents, such as ker o sene, are not to be used to clean car tridge. They may cause de te ri o ra tion of the cartridge. Do not oil car tridge.

Do not use pres sur ized air to clean or dry car tridge.

4. Install cartridge, then replace cover.

SCREWS

COVER

CARTRIDIGE

BASE

FIG. 12

MUFFLER

Inspect and replace corroded muffl er as it could create a fi re hazard and/or damage.

SPARK PLUG

Replace spark plug at the beginning of each mowing season or after every 100 hours of operation, whichever occurs fi rst. Spark plug type and gap setting are shown in the

“PROD UCT SPEC I FI CA TIONS” section of this manual.

CLEANING

IMPORTANT: FOR BEST PERFORMANCE, KEEP MOWER

HOUSING FREE OF BUILT-UP GRASS AND TRASH. CLEAN

THE UNDERSIDE OF YOUR MOWER AFTER EACH USE.

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

CONTAINER

FIG. 11

4. Wipe off any spilled oil from mower or side of engine.

5. Slowly pour oil down the oil fi ll spout, stopping every few ounces to check the oil level with the dipstick.

6. Stop adding oil when you reach the FULL mark on the dipstick. Wait a minute to allow oil to settle.

7. Continue adding small amounts of oil, rechecking the dipstick until oil level settles at FULL. DO NOT overfi ll, or engine will smoke heavily from the muffl er on startup.

8. Always be sure to retighten oil dipstick before starting engine.

9. Re con nect spark plug wire to spark plug.

11

• Clean the underside of your lawn mower by scraping to remove build-up of grass and trash.

• Clean engine often to keep trash from accumulating. A clogged engine runs hotter and shortens engine life.

• Keep fi nished surfaces/wheels free of gasoline, oil, etc.

• We do not recommend using a garden hose to clean lawn mower unless the electrical system, muffl er, air fi lter and carburetor are covered to keep water out.

Water in engine can result in shortened engine life.

CLEAN UNDER DRIVE COVER

Clean under drive cover at least twice a season. Scrape underside of cover with putty knife or similar tool to remove any build-up of trash or grass on underside of drive cover.