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Craftsman 917.377991 Manual Del Usuario página 12

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IMPORTANT:
Blade bolt is grade 8 heat
treated.
TO SHARPEN
BLADE
NOTE: We do not recommend
sharpen-
ing blade - but if you do, be sure the blade
is balanced.
Care should be taken to keep the blade
balanced_
An unbalanced
blade wilt
cause eventual damage to lawn mower or
engine.
° The blade can be sharpened
with a file
or on a gdnding wheel.
Do not attempt
to sharpen while on the mower.
* To check blade balance, drive a nail
into a beam or wall.
Leave about one
inch of the straight nail exposed_
Place
center hole of blade over the head of
the nail. tf blade is balanced,
it should
remain in a horizontal
position.
If either
end of the blade moves downward,
sharpen the heavy end until the blade
is balanced°
Crank shaft
Blade
keyway
ada
Key
Blade
",,
Lock
washer Hardened
washer
edge
Crank
sha_
Blade
adapter
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 manufacturer approved
replacement catcher. Give the lawn
mower model number when ordering.
DRIVE WHEELS
Check front drive wheels each time before
you mow to be sure they move freely.
The wheels not turning freely means
trash, grass cuttings, etco are in the drive
wheel area and must be cleaned to free
drive wheels.
if necessary to clean the drive wheels,
check both front wheels.
= Remove hubcaps,
hairpin cotters and
washers.
= Remove wheels from wheel adjusters.
o Remove any trash or grass cuttings
from inside the dust cover, pinion and/
or drive wheel gear teeth.
o Put wheels back in place.
• If after cleaning, the drive wheels do
not turn freely, contact your nearest
authorized
service center.
GEAR CASE
o To keep your drive system working
properly, the gear case and area
around the drive should be kept clean
and free of trash build-up.
Clean under
the drive cover twice a season.
° The gear case is filled with lubricant to
the proper level at the factory.
The only
time the lubricant needs attention is if
service has been performed
on the
gear case_
• If lubricant is required, use only Texaco
Starplex Premium
1 Grease, Part No.
750369.
Do not substitute.
ENGINE
LUBRICATION
Use only high quality detergent
oil rated
with API service classification
SF, SG or
SH_ Select the oil's SAE viscosity grade
according
to your expected
operating
temperature_
SAE VISCOSITY GRADES
4 I_ll
i_1_1 llllllill
)
°F:
"
:20"
............. 0"
'
30;
32"
40'
60" "'
80"
100" .....
'=C -3p"
.:,2D'
,-,"lO"
O'
1137
20"
30*
4C,'
TEMPERATURE
RANGE ANTICIPA3"EO
BEFORE NEXT OIL CHANGE
NOTE:
Although
multi-viscosity
oils
(5W30, 10W30 etc.) improve starting in
cold weather,
these multi-viscosity
oils
will result in increased
oil consumption
when used above 32°E
Check your
engine oil level more frequently
to avoid
possible 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
oi! 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_
12

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