Initial Set-Up
Hydrostatic Pump Adjustment
3
3-8
Lastec Mower 3372/011305
Initial Set-Up
3.9
Hydrostatic Pump Adjustment
DANGER!
Always use jack stands when adjusting the hydrostatic pumps!
Keep everyone clear of all controls while adjusting the hydrostatic pumps!
Occasionally, you may need to adjust the
hydrostatic pumps to keep the drive wheels
from creeping. Follow these procedures to
adjust the pumps:
1. Lift the rear of the drive unit until the
drive tires clear the ground. Use jack
stands for safety.
2. Be sure steering control arms are
locked in neutral position.
3. Start the drive unit, and set the throttle
arm to 3/4 full.
4. If either drive tire rotates, you need to
adjust the hydrostatic pump link arm for
that tire. (The link arm is attached to the
top of the steering control arm). To
adjust the link arm, loosen the jam nut
from the hydrostatic pump link arm.
(The jam nut is located between the rod
end and the link arm). Slowly turn the
link arm, watching the tire as it turns. If the tire begins turning faster, turn the link arm in
the opposite direction until it slows, and eventually stops. Tighten the jam nut to lock the
link arm into this position.
5. When finished, turn off the drive unit.
6. Be sure that both link arm jam nuts are tight.
7. Lift the drive unit, remove the jack stands, and lower the unit to the ground.
Danger
Jam Nut
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