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5.
After wheel rotation ceases, tighten the jam nuts to secure
adjustment.
6.
Stop the engine and release the right brake. Remove the jack
stands and lower the machine to the shop floor. Test drive the
machine to make sure it does not creep.
ADJUSTING THE CUTTING UNIT LIFT
RATE (Fig. 45)
The cutting unit lift circuit is equipped with an adjustable valve to
ensure the front cutting units raise and lower evenly. Adjust the
cutting units as follows:
1.
Locate the valve under the seat.
2.
Loosen the setscrew on the valve. Rotate the valve clockwise
to slow down drop rate of the front outside cutting units.
3.
Verify lift rate adjustment by raising and lowering the cutting
units several times. Readjust as required.
4.
After desired lift rate is attained, tighten the set screw to lock
adjustment.
ADJUSTING THE SERVICE BRAKES
(Fig. 46)
Adjust the service brakes when there is more than 2.5 cm of "free
travel" of the brake pedal, or when the brakes do not work effec-
tively. Free travel is the distance the brake pedal moves before brak-
ing resistance is felt.
1.
Disengage the locking pin from the brake pedals so both pedals
work independently of each other.
2.
To reduce free travel of brake pedals, tighten the brakes—
loosen the front nut on the threaded end of the brake cable.
Then tighten the rear nut to move the cable backward until the
brake pedals have 1.2–2.5 cm of free travel. Tighten the front
nuts after the brakes are adjusted correctly.
CHANGING PLANETARY GEAR DRIVE
OIL (Fig. 47)
Change the oil initially after 200 hours operation and every 800
hours, or yearly. Use high-quality SAE 85W-140 wt. gear lubrica-
34
Figure 45
1.
Cutting unit adjustment valve
Figure 46
1.
Brake cables
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