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Troubleshooting, Adjustment, & Service
TRANSMISSION PURGING
The following procedure applies to the Tuff Torq K-51
hydrostatic transaxle. Purge the transmission if the unit
lacks drive in forward or reverse, or after an oil change
1. See Figure 44. Block the front wheels. Elevate the
rear end of the tractor using a chain hoist or floor
jack. Support the rear of the unit using jackstands.
Elevate the unit just high enough for the rear wheels
to clear the ground.
2. Activate the seat switch (A, Figure 44), depress the
clutch / brake pedal (B, Figure 45), and start the
engine. After the engine has started, set throttle (A)
to IDLE.
3. Release the clutch / brake pedal (B) and move the
ground speed lever (C) fully forward.
4. While holding the ground speed control in forward
position, engage and disengage the transmission
release valve lever (Figure 46) several times.
5. Move the ground speed lever (C, Figure 45) to full
reverse.
6. While holding the ground speed control in reverse,
engage and disengage the transmission release
valve lever (Figure 46) several times.
7. Engage the transmission release valve lever (Figure
46) and move the ground speed lever (C, Figure 45)
from full forward to full reverse several times.
8. Lower the tractor and test run for several minutes.
Figure 46. Release Lever - Hydro Models
Release Lever
Figure 44. Elevate the Rear End of the Tractor
A. Seat Switch
Figure 45. Controls
A. Throttle C. Ground Speed Lever
B. Clutch / Brake Pedal
A
B
A
C
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