Replacement; Drive Wheels - Craftsman 3One 917.374370 Owner's Manual

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CUSTO PC LMTHES
LAWN MOWER
Always observe safety rules when performing any mainte-
nance.
TIRES
• Keep tires free of gasoline, oil, or insect control chemi-
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,. Replace
bent or damaged blades.
TO REMOVE BLADE (See Fig. i1)
- Disconnect spark plug wire from spark plug and place
wire where it cannot come in contact with spark plug.
• Turn lawn mower on its side,. Make sure air filter and
carburetor are up,
o Use a wood block between blade and mower housing
to
bo preventlt, blade from turning when removing blade
o Protect your hands with gloves and!or wrap blade with
heavy cloth.
o Remove blade bolt by tu rning counter-clockwise. Use
a 9/16" box or open-end wrench.,
° Remove blade and attaching hardware (bolt, lock
washer 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 propedy_ Replace adapter if damaged..
TO REPLACE BLADE (See Fig. 11)
° Position the blade adapter on the engine crankshaft°
Be sure key in adapter and crankshaft keyway are
aligned°
° Position blade on the blade adapter aligning the two (2)
holes in the blade with the raised lugs on the adapter.
° Be sure the trailing edge of blade (opposite sharp
edge) is up toward the engine_
° Install the blade bolt with the lock washer and hardened
washer into blade adapter and crankshaft.
° 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 GRADE 8 HEATTREATED.
NOTE: We do not recommend sharpening blade - but if you
do, be sure the blade is balanced.
TO SHARPEN BLADE
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 file or on a grinding
wheel., Do not attempt to sharpen while on the mower.
o To check blade balance, drive a nail into a beam orwaIi.
Leave about one inch of the straight nail exposed.
Place center ho_e of blade over the head of the nailo 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.
13
BLADE
BLADE
ADAPTER.,,,,
KEY
CRANK_
SHAFT
KEYWAY
B! CRANK-
B( SHAFT
HARDENED
WASHER
TRAILING
LOCK WASHER EDGE BLADE ADAPTER
FIG. 11
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 filled 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,
= tf lubricant is required, use only Texaco Starplex Pre-
mium Grease, part no. 750369. Do not substitute°
DRIVE WHEELS
Check front drive wheels each time before you mow to be
sure they move freely.
The wheels not turning freely means trash, grass cuttings,
etco are in the drive wheel area and must be cleaned to free
drive wheels.
if necessary to clean the drive wheels, check both front
wheels.
• Remove hubcaps, hairpin cotters and washers,.
° Remove wheels from wheel adjusters,
° Remove any trash or grass cuttings from inside the
dust cover, pinion and/or drive wheel gear teeth.,
° Put wheels back in place.
• If after cleaning, the drive wheels do not turn freely,
contact your nearest service center.
GRASS CATCHER
The grass catcher may be hosed with water, but must
be dry when used,.
Check your grass catcher often for damage or deterio-
ration. Through normal use it will wear. If catcher
needs replacing, replace only with a manufacturer
approved replacement catcher. Give the lawn mower
model number when ordering.