Drive Wheels; Blade Care; Lawn Mower - Husqvarna HD775HW Operator's Manual

LAWN MOWER

Always observe safety rules when performing any 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.

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. Re place
a bent or dam aged blade.
CAUTION:
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. 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 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).
6. Remove debris shield.
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 crank shaft.
Be sure key in adapter and crankshaft keyway are
aligned; and that the drive belt is inside the tab of the
belt retainer.
2. Install debris shield.
3. Position blade on the blade adapter.
IMPORTANT: TO ENSURE PROPER AS SEM BLY, CENTER
HOLE IN BLADE MUST ALIGN WITH STAR ON BLADE
ADAPTER.
4. Be sure the trailing edge of blade (opposite sharp edge)
is up toward the engine.
5. Install the blade bolt with the lock washer and hardened
washer into blade adapter and crankshaft.
MAINTENANCE
Use only a replacement
6. 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. IF BOLT
NEEDS REPLACING, REPLACE ONLY WITH APPROVED BOLT
SHOWN IN THE REPAIR PARTS SECTION OF THIS MANUAL.
BELT RE-
TAINER
BLADE
ADAPTER
DEBRIS
SHIELD
BLADE
TO SHARPEN BLADE (See Fig. 15)
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, you will need a 5/8" diameter
steel bolt, pin, or a cone balancer. (When using a cone
bal anc er, follow the in struc tions supplied with bal anc er.)
NOTE: Do not use a nail for balancing blade. The lobes
of the center hole may appear to be centered, but are not.
• Slide blade on to an unthreaded portion of the steel bolt
or pin and hold the bolt or pin parallel with the ground.
If blade is bal anced, it should remain in a horizontal
po si tion. If either end of the blade moves downward,
sharpen the heavy end until the blade is balanced.
CENTER HOLE
5/8" BOLT OR PIN
11
CRANK-
KEY WAY
TRAILING
HARDENED
WASHER
LOCK WASHER
BLADE BOLT
FIG. 14
BLADE
FIG. 15
SHAFT
KEY
EDGE