Bolens 660 ParkingBrakeAdjustment, SpeedControlAdjustment, Assembly, Disengagement Rod Figure

oRemove the hairpin clip which secures the disengagement rod to the stabilizer shaft assembly. See Figure 16.

•o

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Stabilizer Shaft

"_JIl_l I_1 / /""_///// _ Assembly

ParkingBrakeAdjustment

,i_ WARNING: Never attempt to adjust the disengage PTO, move shift lever into neutral

position, stop engine and remove key to brakes while the engine is running. Always prevent unintended starting.

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Disengagement Rod

Figure 16

oPult the rod toward the rear of the tractor (to take up slack), then thread the rod inward or outward (usually only one or two turns) untit the rod lines up

as precisely as possible with the hole in the stabilizer shall.

NOTE: Threading the disengagement rod outward (toward the rear of the tractor) provides for more belt

tension. Threading the disengagement rod inward provides for less belt tension.

o Reinsert the rod and re-secure it to the stabilizer shaft with the cotter pin removed earlier.

Check the adjustment by placing the deck engagement/ lift lever in the BLADES STOP position. The deck should move up and forward, allowing the belt to become loose.

o Reassemble the shift cover panel.

o Start the tractor's engine and test the deck engagement/lift lever to be certain the blades fuIly disengage when in the BLADES STOP.

o Repeat the adjustment procedure if necessary.

Looking at the transmission from the right side of the tractor, locate the extension spring and brake

ExtensionSpring

oHex Nut

Transmission

NOTE: Rear, right wheel not shown for elarib]

Figure 17

o Loosen, but do NOT remove, the he:<nut found on the right side of the brake assembly. See Figure 17.

oUsing a feeler gauge, set the gap between the brake disc and the brake puck at .011 ".

o Re-tighten the hex nut loosened earlier.

SpeedControlAdjustment

NOTE: When operating the unit initially or after replacing the belts, there wilt be little difference between the highest two speeds until after the belts have gone through a break-in period and have seated themselves into the pulleys.

If the full range of speeds cannot be obtained on your unit, adjust the speed control as follows.

oUnthread the shift knob and remove the two flange screws which secure the shift cover panel in place. Refer to Figure 15.

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