Craftsman 917.377631 - Manual (Page 12)

NOTE We (to not recxjmmend sharpening
blade - but if you do, be sure the blade is
balanced.
TO SHARPEN BLADE
Care should be taken to teep tiie blade
badanced. An unbalanced fc^de wiQ 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.
• To (^eck blade balance, drive a nail into a
beam or wall Leave about one inch of the
straight nail e)qx>sed. Place c^er hole of
blade over the head of the nail. If blade is
balanced, it should remain in a horizontal
position. If either end of the blade moves
downward, sharpen the heavy end until №e
blade is balanced
Blade
adaptor Crank­
shaft
keyway
Blade
Blade
bolt
Lock
washer
Hardened
washer
Blade
adaptor
Crank­
shaft Trailing
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.
DRIVE WHEELS
Check rear drive wheels each time you
mow to be sure they move freely. The
wheels not turning 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 locknuts.
• Remove wheels from wheel adjuster
axles.
• Remove any trash or grass cuttings from
inside the dust cover, pinion and/or drive
wheel gear teeth.
• The pinion gear must be installed with
the left gear on the left side and with the
right gear on the right side, from an
operator's view.
• The pinion gear is stamped with an “L”
Oeft) or “R” (right) on the inside. If
installed incorrectly, the drive system will
not work.
• Place wheels back on adjuster axles.
• Replace locknuts and hubcaps.
NOTE: Pinions and drive pawls should be
cleaned and lubricated with grease
approximately every 25 hours or once a
year.
LUBRICATION
Use only high quafity detergent oil rated with
API service classification SF, SG or SH.
Select the oiTs SAE viscosity grade arxording
to your expected operating temperature.
SAE VISCOSITY GRADES
I I I
i
I I..........I......
i
III
-20*
30 * ar 60* 80* too*
•c - 30 * -go* »iy
10 * 20 * 30 * 40 *
TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE
NOTE: /\lthough multi-viscosity oils (5W30,
10W30 etc.) improve starting in cold weather,
these multi-viscosity oils will result in increas^
oil consumption when used‘aiboVe32*’E
Check your engine oB level more frequently to
avoid posstoie engine damage from running
low on oil.
Change the oil 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 oil level before starting
the engine and after each five (5) hours of
continiKXis use. Tighten oil plug securely each
time you check the oil level.
12