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Craftsman 917.389590 Owner's Manual page 12

6.75 horsepower 21" rear discharge rotary lawn mower

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Blade
adapter
Crankshaft
Key_!
_
keyway
L°ckwasher
Blade
i--_-:_
_-
.
._
haft
"
Ij
l,ade
\
bolt
\
___....
Hardened
i railing
Blade adapter
washer
edge
GRASS CATCHER
• The grass catcher may be hosed with
water, but must be dry when used.
• Check your grass catcher often for
damage or deterioration.
Through
normal use it will wear. If catcher needs
replacing, replace only with a manufac-
turer approved replacement catcher.
Give the lawn mower model number
when ordering.
ENGINE
LUBRICATION
Use only high quality detergent oil rated
with API service classification SF-SJ,
Select the oil's SAE viscosity grade,
according to your expected operating
temperature.
SAE VISCOSITY
GRADES
'C .30.
2O'
10,
I;p
20*
30*
TEMPERATE
RANGEANTIC_TIIO
BEFCRI_ NEXT CiL CHANGE
NOTE: Although multi-viscosity oils
(5W30, lOW30 etc.) improve starting in
cold weather, these multi-visCosity oils
will result in increased oil consumption
when used above 32°1= . Check your
engine oil level more frequently to avoid
possible engine damage from running
low on oil.
Change the oi! 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 0il level before
starting the engine and after each five (5)
hours of continuous use. Tighten oil plug
securely each time you check the oil
level.
TO CHANGE ENGINE OIL
NOTE:
Before tipping lawn mower to
drain oil, drain fuel tank by running
engine until fuel tank is empty.
t. Disconnect spark plug wire from spark
plug and place wire where it cannot
come in contact with spark plug.
2. Remove engine oil cap; lay aside on a
clean surface.
3. Tip lawn mower on its side as shown
and drain oil intoa
suitable container.
Rock lawn mower back and forth to
remove any oil trapped inside of
engine.
4. Wipe off any spilled oil on lawn mower
and on side of engine.
5. Fill engine with oil. (See "Add Oil" in
the Operacion section of this manual.)
6. Reconnect spark plug wire to spark
plug.
Container
AIR FILTER
Your engine will not run properly and may
be damaged by using a dirty air filter.
Replace the air filter every year or after
every 100 hours of operation,
more often
if you mow in very dusty, dirty conditions.
Do not wash air filter.
Coll_
TO CHANGE AIR FILTER
1. Remove the air filter by turning
c!ockwise to the stop and pull away
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.
Turn clockwise
Clip
remove
Air tilter
Air filtercover
clockwiseto
tighten
12

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