Husqvarna 7021KP Manuel De L'opérateur page 11

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.
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 ap-
proved by the manufacturer of your
mower is hazardous, could damage
your mower and void your warranty.
TO REMOVE BLADE (See Fig. 9)
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.
BLADE ADAPTER
KEY
BLADE
LOCK
WASHER
BLADE
BOLT
HARDENED
TRAILING EDGE
WASHER
TO REPLACE BLADE (See Fig. 9)
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.
All manuals and user guides at all-guides.com
MAINTENANCE
CRANKSHAFT
KEY WAY
CRANKSHAFT
FIG. 9
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.
TO SHARPEN BLADE
NOTE: We do not recommend sharp en ing blade - but if
you do, be sure the blade is 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.
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 replace-
ment catcher. Give the mower model number when
ordering.
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.
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. 10)
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.
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