Maintenance – Sears 917.25446 User Manual
Page 16
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MAINTENANCE
ENGINE OIL DIPSTICK
AND FILL TUBE
OIL FILTER
FIGURE 19
B R A K E R O D
O I S C B R A K E
SWITH PARKING
BRAKE ENQAGEDl
Every 25 Hours (Twice a Mowing Season)
1. Brake Adjustment
This Tractor is equipped with an adjustable brake system
mounted on the right side of the transaxle (Fig. 20).
IF TRACTOR REQUIRES MORE THAN
1.8 METRES (SIX FEET) STOPPING DIS
TANCE
IN
HIGHEST
G E A R ,
THEN
BRAKE MUST BE ADJUSTED.
a
c.
Depress clutch/brake pedal and engage parking
brake.
Measure distance between brake operating arm
and nut “A" on brake rod.
¡(distance is other than 3 8 cm(1-1/2"), loosen jam
nut (Fig. 20) and turn nut until distance becomes
3 8 cm (1-1/2") Retighten jam nut against nut “A ”
Road test tractor for proper stopping distance as stated
above. Readjust if necessary.
2. Tire Care
a. Maintain tire pressure in front at 14 PSI
(1 Kg/crrf) and rear tires at 10 PSI (0.7 Kg/cnf).
b Keep tires free of gasoline, oil, or insect control
chemicals which can harm rubber.
c Avoidstumps, stones, deep aitsandother hazards
that may cause tire damage
3 Blade Sharpening
For best results mower blades must be kept sharp. The
blades can be sharpened with a few strokes of a file or
on a grinding wheel We suggest they be sharpened
after every 25 hours of mowing Do not attempt to
sharpen while on mower if you mow in sandy soil
check the blades after each two mowings The sand
wears the blades away rapidly>
FIGURE 20
FIGURE 21
When grinding care should be taken to maintain
blade balance and the blade should be checked
lor proper balance before reinstallation on mower
Unbalanced or bent blade will cause excessive
vibration when running and eventual damage to
mower or engine Replace bent or damaged
blades
To check blade balance, drive a nail into a beam or
wall. Leave about one inch (25.4 mm) of the
straight nail exposed.. Place center hole of clean
blade over the head of the nail (Fig. 21).
NOTE:
CENTER HOLE OF BLADE ON NAIL. IF BLADE
IS PROPERLY BALANCED, BLADE SHOULD
REMAIN IN POSITION SHOWN IN FIG, 21, IF
EITHER END OF THE BLADE MOVES DOWN
WARD, BLADE IS NOT BALANCED. SHARPEN
THE HEAVY END UNTIL BLADE IS BALANCED.
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