Service And Adjustments - Craftsman Rotary Lawn Mower 917.379120 Owner's Manual

MUFFLER
Inspect and replace corroded muffl er as it
could create a fi re hazard and/or dam age.
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 C-
A TIONS" section of this manual.
WARNING: To avoid serious injury,
before performing any service and
adjustments:
1. Release control bar and stop engine.
2. Make sure the blade and all moving
parts have completely stopped.
3. Disconnect spark plug wire from spark
plug and place wire where it cannot
come in contact with plug.
LAWN MOWER
TO ADJUST CUTTING HEIGHT
See "TO ADJUST CUTTING HEIGHT" in
the Operation sec tion of this manual.
REAR DEFLECTOR
The rear defl ector, attached between the rear
wheels of your mower, is provided to minimize
the possibility that objects will be thrown out
of the rear of the mower into the operator
mowing position. If the defl ector becomes
dam aged, it should be replaced.
DISCHARGE GUARD
The discharge guard, attached to the
dis charge opening of your lawn mower, is
pro vided to prevent the possibility of injury
Filter Filter
Cover
Tabs
Tabs

SERVICE AND ADJUSTMENTS

13
CLEANING
IMPORTANT: For best performance, keep
mower housing free of built-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.
• 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 and wheels free
of all gasoline, oil, etc.
• We do not recommend using a garden
hose to clean lawn mower unless the
elec tri cal system, muffl er, air fi lter and
carburetor are covered to keep water
out. Water in engine can result in short-
ened 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.
re sult ing from objects being thrown out of
the dis charge opening into the operator
mowing position. If the dis charge guard
becomes dam aged, it should be replaced.
TO REMOVE DRIVE BELT
1. Remove drive cover. Remove belt from
gearcase pulley by push ing down on
pulley and rolling belt off it.
2. Turn lawn mower on its side with air
fi lter and car bu re tor up.
3. Remove blade.
4. Remove debris shield.
5. Remove belt from engine pulley on
crankshaft.
Drive
cover Belt
PUSH DOWN