2. File or grind an equal amount of metal
from each cutting edge of the blade until
sharp. DO NOT change angle of cutting
edge or round the corner of the blade.
(
See Figure 19.)
3. Check blade balance by sliding an
unthreaded bolt through center hole. Hold
the bolt level. If blade does not remain
horizontal, sharpen the heavy end until
blade is balanced.
CAUTION: Unbalanced blades cause
excessive vibration and eventual
damage to unit. Balance blades before
reinstalling on unit.
Never weld or straighten blades.
Figure 19
CAUTION: Unbalanced blades cause
excessive vibration and eventual
damage to unit. Balance blades before
reinstalling on unit.
Never weld or straighten blades.
Install Blades
CAUTION: Mating surfaces between
spindle, lower spindle, guard, blade, and
washer MUST be free of debris to
ensure correct tightness and alignment.
See Figure 20
1. Secure lower spindle guards and blades
to
spindles with one bevel washer and hex
bolt. Torque to 156 N•m – 217 N•m
(115 lb-ft – 160 lb-ft).
2. Reconnect spark plug wires.
CHECK PARKING BRAKE
IMPORTANT: Check brake on both sides of unit.
1. Place unit in service position. See Service
Position on page 17.
2. Measure length of compression spring
and
distance between the stop nut and
trunnion.
Compression spring length
MUST be 3.8 cm
(1-1/2") and the gap
between stop nut and
trunnion MUST be
3.2 mm – 6.4 mm
(1/8" – 1/4"). (See Figure 19.)
•
If measurements are outside
specification, adjust parking brake. See
Adjust Parking Brake on page 25.
•
If measurements are within
specification, no adjustment is needed.
3. Return hood to operating position.
Figure 20
21
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