Sears 917.25049 Lawn Mower User Manual


 
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TRACTOR TO SHARPEN BLADE (See Fig. 13)
Always observe safety rules when performing any mainte-
nanceo
BRAKE OPERATION
Iftractor requires more than six (6) feet stopptng distance
at high speed inhighestgear, thenbrake mustbeadjusted.
(See "TO ADJUST BRAKE" in the Service and Adjust-
ments section of this manual).
TIRES
Maintain proper air pressure in all tires (See "PROD-
UCT SPECIFICATIONS" on page 3 ofthis manual),
o Keep tires free of gasoline, oil, or insect control chemi_
calswhich can harm rubber.
° Avoid stumps, stones, deep ruts, sharp objects and
other hazards that may cause tire damage.
Care should be taken to keep the blade balanced. An
unbalanced blade willcause excessive vibrationand even-
tual damage to mower and engine.
° The blade can be sharpened with a file or on a grinding
wheel. Do not attempt to sharpen whlie on the mower.
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 bal-
ancer).
= Slide blade on to an unthreaded portionof the steel bolt
or pin and hold the bolt or pin parallelwith 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.
BLADE CARE
For best results mower blades must be kept sharp° Re-
place bent or damaged blades.
BLADE REMOVAL (See Fig. 12)
Raise mower to highest position to allow access to
blades°
Remove hexbolt, Iockwasher and fiat washersecuring
blade.
- Install new or resharpened blade with trailing edge up
towards deck as shown.
° Reassemble hex bolt, lock washer and flat washer in
exact order as shown_
° Tighten bolt securely (30-35 FtoLbs. torque),
IMPORTANT: BLADE BOLT ISGRADE8 HEATTREATED,
NOTE: Wedo notrecommend sharpening blade- but ifyou
do, be sure the blade isbalanced.
_""_ MANDREL
BLADE _ ASSEMBLY
TRAILING
EDGE UP
FLAT WASHER,, __ /
LOCK WASHER ,, _, /
*A GRADE 8 HEAT TREATED BOLT' CAN BE
IDENTIFIED BY SIX LINES ON THE BOLT HEAD.
FIG. 12
FIG. 13
BATTERY
Your tractor has a battery charging system which is suffi-
cient for normal use. However, periodic charging of the
battery with an automotive charger wilt extend its life.
° Keep battery and terminals clean.
° Keep battery bolts tight.
Keep small vent holes open (See "CONNECT BAT-
TERY" in the Assembly section of this manual).
Recharge at 6-10 amperes for I hour,,
TO CLEAN BATTERY AND TERMINALS
Corrosion and dirt on the battery and terminals can cause
the battery to "leak" power:
Remove terminal guard.
Disconnect BLACK battery cable first then RED bat-
tery cable and remove battery from tractor.
. Wash battery with solution of four tablespoons of
baking sodato one gallon of water. Be careful not toget
the soda solution into the cells.
. Rinse the battery with plain water and dry.
Clean terminals and battery cable ends with wire brush
until brighL
Coat terminals with grease or petroleum jelly,
° Reinstall battery (See "CONNECT BATTERY" in the
Assembly section of this manual).
18