Craftsman 917378420 21" REAR DISCHARGE POWER PROPELLED ROTARY LAWN MOWER

Owner 's Manual - Page 13

For 917378420. Also, The document are for others Craftsman models: 917.378420

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AIRFILTER
Your engine will not run properly and may
be damaged by using a dirty air filter.
Replace the air filter every year, more
often ifyou mow in very dusty, dirty
conditions. Do not wash air filter.
TO CHANGE AIR FILTER
1. Remove the air filter by turning
clockwise to the stop and pull awa[/
from collar.
2. Remove filter from inside of cover.
3. Clean the inside of the cover and the
collar to remove any dirt accumula-
tion.
4. Insert new filter into cover.
5. Put air filter cover and filter into collar
aligning the tab with the slot.
6. Push in on cover and turn counter-
clockwise to tighten.
Collar
Turn
clockwise
remove
Slot
Turn
Air filtercover counter-
clockwise
to tighten
MUFFLER
Inspect and replace corroded muffler as it
could create a fire hazard and/or dam-
age.
SPARK PLUG
Change your spark plug each year to
make your engine start easier and run
better. Set spark plug gap at .030 inch.
CLEANING
IMPORTANT: For best performance,
keep mower housing free of built-up
grass and trash. Clean the underside of
your mower after each use.
ACAUTION: Disconnect spark plug wire
from spark plug and place wire where it
cannot come in contact with the spark
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
a_cumulating. A clogged engine runs
hotter and shortens engine life.
Keep finished surfaces and wheels free
of all gasoline, oil,etc.
We do not recommend using a garden
hose to clean lawn mower unless the
electrical system, muffler, air filter 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.
ACAUTION: Before performing any
service or 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 where it cannot come
in contact with plug.
LAWN MOWER
TO ADJUST CUTTING HEIGHT
See "TO ADJUST CUTTING HEIGHT" in
the Operation section of this manual.
REAR DEFLECTOR
The rear deflector, 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
deflector becomes damaged, it should be
replaced.
TO REMOVE/REPLACE DRIVE BELT
1. Remove drive cover. Remove belt
from gearcase pulley by pushing
down on pulley and rolling belt off it.
2. Turn lawn mower on its side with air
filter and carburetor up.
3. Remove blade.
4. Remove debris shield.
5. Remove belt from engine pulley on
crankshaft.
6. Install new belt by reversing above
steps.
7. Always use factory approved belt to
assure fit and long life.
Drive
Belt
Push
down
13
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