Sears 917.25148 Lawn Mower User Manual


 
CUSTOMER
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TRACTOR
Always observe safety rules when performing any mainte-
nancer
BRAKE OPERATION
If unit requires more than six (6) feet stopping distance at
high speed in highest gear, then brake must be adjusted.
(See "TO ADJUST BRAKE" in the Service and Adjust-
ments section of this manual)
TIRES
- Maintain proper air pressure in alt tires (See "PROD-
UCT SPECIFiCATiONS" on page 3 of this manual)..
o Keep tires free of gasoline, oil, or insect control chemi-
cals which can harm rubber
o Avoid stumps, stones, deep ruts, sharp objects and
other hazards that may cause tire damage
BLADE CARE
For best results mower blades must be kept sharp. Re-
ptace bent or damaged blades
BLADE REMOVAL (See Fig. 13)
= Raise mower to highest position to allow access to
blades..
Remove hex bott, lock washer and ffat washer securing
blade
o Install new or resharpened blade with trailing edge up
towards deck as shown.
o Reassemble hex bolt, lock washer and fiat washer in
exact order as shown,
o Tighten bolt securely (30-35 FL Lbs.. torque),
IMPORTANT: BLADE BOLT IS GRADE 8 HEAT TREATED
NOTE: We do not recommend sharpening blade- but if you
do, be sure the blade is balanced.
MANDREL
AA=SE=BL
....L /
LOCK WASHER ,-__ _ _"*%'-, /
HEX BOLT (GRADE B) _'-_-_4 "_
*A GRADE 8 HEAT TREATED BOLT CAN BE
IDENTIF'ED BY SIX LINES ON THE BOLT HEAD,
FIG. 13
TO SHARPEN BLADE (See Fig. 14)
Care should be taken to keep the blade balanced° An
unbalanced blade will cause excessive vibration and even-
tual damage to mower and engine
RESPONSIBILITIES
i
o The blade can be sharpened with a file or on a grinding
wheel Do not attempt to sharpen while on the mower
o To check blade balance, you will need a 5/8" diameter
steel bolt, pin, or a cone balancer. (When using a cone
balancer, follow the instructions supplied with baF
ancer),.
o Slide blade on to an unthreaded portion of the steel bolt
or pin and hold the bolt or pin parallel with the ground,
If 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.
NOTE: Do not use a nail for balancing blade. The lobes of
the center hole may appear to be centered, but are not.
/
CENTER HOLE
/
/
5t8" BOLT
OR PIN
BLADE
FIG. 14
V-BELTS
Check V-belts for deterioration and wear after t00 hours
and replace if necessary. The belts are not adjustable
Replace belts if they begin to slip from wear
TRANSAXLE COOLING
Keep transaxle free from build-up of dill and chaff which
can restrict cooling
CHECK TRANSAXLE OIL LEVEL
(See Fig. '15)
, BIock up rear axie securely
- Remove left rear wheel by removing hub belts.
Remove filler plug from transaxle.. Oil level must be
even with plug threads. If necessary, fill with SAE 30
motor oil, API-SF or SG Replace filfer plug.
- Reassemble wheel to hub,
, For approximate capacity see "PRODUCT SPECIFI-
CATIONS" on page 3 of this manual..
TRANSAXLE
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o
O
FIG. 15
1"7'