English-67
REPAIR INSTRUCTIONS
Bleeding the Hydrostatic and
Hydraulic Systems PR 17, PF 21
1. Remove the transmission cover.
2. Check the oil level in the hydrostatic
transmission. The oil tank may be, in this
position, over filled.
3. Constantly check the oil level in the
hydrostatic transmission and fill as required.
4. Start the engine and set the accelerator to
idle.
5. Repeatedly engage and disengage the
clutch while alternately depressing the
forward and reverse pedals.
6. When the rider begins to move, the throttle
should be increased to high engine speed.
7. Repeat quick starts and emergency stops
until the transmission responds properly.
8. Turn the steering wheel repeatedly from one
extreme position to the other until the
steering works without jerks or stops.
9. Run the hydraulic cutting unit between its
end positions repeatedly. Hold the lever still
for 0.5-1 second to ensure that the hydraulic
cylinder reaches its end position.
10. Test run the machine.
11. Finally, check the hydrostatic transmission
oil level and fill or drain the oil tank as
needed.
12. Replace the transmission cover.
IMPORTANT INFORMATION
Ensure cleanliness. Used oil may not be
reused. See ”Hydraulic Hygiene” on page 81.
IMPORTANT INFORMATION
The tank must never be run empty while
work is underway. Risk of air penetration
into the system.
Transmission oil tank
Clutch control
Hydraulic cutting unit lift
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