Craftsman 917.377631 Lawn Mower User Manual


 
NOTE: We do notrecommendshaq_ning
blade- butifyoudo, besurethebladeis
balanced.
TO SHARPEN BLADE
Care should be taken to keep the blade
balanced. An unbalanced blade wiUeause
eventual damage to lawn mower or engine.
. The blade can be sharpened .with a fileor
on a grindingwheel. Do not attempt to
sharpen while on the mower.
To check blade balance, drive a nail intoa
beam or walL Leave about one inchof the
straightnagexposed. Place center holeof
blade over the head of the nail. If blade is
balanced, itshould remain in a horizontal
position, if eitherend of thQblade moves
downward, sharpen the heavy end unblthe
blade isbalanced.
Key
Blade,
Blade
bolt
Blade Crank-
adaptor shaft
keyway
• Lock
washer Crank-
Hardened Blade
washer Trailing shaft
edge adaptor
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.
DRIVE WHEELS
Check rear drive wheels each time you
mow to be sure they move freely. The
wheels not tuming 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 the drive wheels,
check both rear wheels.
Remove hubcaps and Iocknuts.
* Remove wheels from wheel adjuster
axles.
Remove any trash or grass cuttings from
inside the dust cover, pinion and/or drive
wheel gear teeth.
12
The pinion gear must be installed with
the left gear on the left side and with the
right gear on the rightside, from an
operator's view.
The pinion gear is stamped with an "L"
(left) or "R" (right) on the inside. If
installed incorrectly, the drive system will
not work.
Place wheels back on adjuster axles.
Replace Iocknuts and hubcaps.
NOTE: Pinions and drive pawls should be
cleaned and lubricated with grease
approximately every 25 hours or once a
year.
LocknutWash_^o"_
Drive pin
Dust cover
Pinion
E-dng
ENGINE _.
LUBRICATION
Use onlyhigh quarrydetergentoil ratedwith
AP! service classificationSF, SG or SH.
Select the oil'sSAE viscositygrade according
to yourexpected operatingtemperature.
SAE VISCOSITY GRADES
4 I,
=IF -20" 0" 30" 32" 40" 60" 80° 100"
TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE
NOTE: Althoughmulti-viscosityoils(5W30,
10W30 etc.) improvestartingincold weather,
these multi-viscosityoilswillresult in increased
oilconsumption when used_abo-Ve32°F..
Check your engineoillevel more frequently to
avoid possibleengine damage from running
low on o=1.
Change the oilafterevery 25 hours of
operationor at least once a year if the lawn
mower isnot usedfor 25 hours in one year.
Check the crankcase oillevel before starting
the engine and aftereach five (5) hours of
continuoususe. Tighten oil plug securelyeach
timeyou check the oillevel.