Bolens 140-990A - Manual (Page 17)

Friction Controi Adjustment
The harder the tractor pulls, the greater the
tendency for the control lever to return to neutral.
For example, the adjustment would need to be
much tighter when using the moldboard plow than
when using the mowing deck.
Adjustment can be made for the different at­
tachments by loosening the lock nut and ad­
justing the screw as shown in figure 32. Turn the
screw in (clockwise) to increase friction. The fric­
tion control must be free of grease and oil.
Hydrostatic Linkage Adjustment
1 . Put the control lever in the neutral position.
2. Place the Start/Park Lever in the Start/Park
position.
3. Put the axle range lever in the center (neutral)
position.
4. Jack up the rear of the tractor so that the
wheels are off the floor. Block the front
wheels securely.
5. Loosen the nut on the end of the brake rod un­
til the brake is loose. You should be able to
rotate the rear wheels freely. (See figure 34.)
6. Position the axle range lever in the “LOW”
position.
FIGURE 34.
7.
8 .
Loosen the bolt and nut on the control adjust­
ment plate enough to allow the tear drop con­
trol lever and the control adjustment plate to
move independently of each other. (See figure
35.)
Start the engine and run it at half throttle.
I WARNING
I
9.
10
.
11 .
12 .
13.
14.
Use extreme caution from this point
on due to the cooling fan revolving
on the hydrostatic pump.
Rotate the tear drop control lever on the pintle
shaft in both directions and determine the
true neutral (the point which the rear wheels
stop).
■1^ NOTE
Some new hydrostatic units may
turn very slowly, but if the wheels
can be stopped by hand the adjust­
ment is correct.
In this position, with care not to move the con­
trol lever, tighten the bolt and nut on the con­
trol adjustment plate.
Stop the engine. Position the axle range lever
in neutral.
Tighten the nut on .the end of the brake rod un­
til the brake holds and the rear wheels cannot
be rotated.
Lower the tractor to the floor.
Start the engine and road test it.
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