Exmark NAV27KC - Manual (Page 36)

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CAUTION
POTENTIAL HAZARD
♦ Raising the mower deck for service or maintenance
relying solely on mechanical or hydraulic jacks could be
dangerous.
WHAT CAN HAPPEN
♦ The mechanical or hydraulic jacks may not be enough
support or may malfunction allowing the unit to fall,
which could cause injury.
HOW TO AVOID THE HAZARD
♦ DO NOT rely solely on mechanical or hydraulic jacks for
support. Use adequate jack stands or equivalent
support.
Adjust steering levers:
a) Stop engine and wait for all moving parts to stop.
b) Pull the speed control lever completely back to the neutral position. The
two steering levers should be straight up and down (vertical). If necessary,
adjust steering levers by changing the length of the link between the speed
control lever and the control arm on the end of the steering control shaft.
See Figure 15.
FIGURE 15
SPEED CONTROL LEVER ADJUSTMENT
Set neutral:
a) Remove the electrical connection from the seat safety switch, located directly
in front of the seat switch assembly.
b) The neutral adjustment must be made with the drive wheels turning. Raise the
frame and place on jack stands so that drive wheels can rotate freely.
Temporarily install a jumper wire across the terminals in the connector of the
wiring harness.
c) Start the engine.
d) Run the unit at least 5 minutes with the drive levers at full forward speed to
bring hydraulic system oil up to operating temperature.
e) To obtain the neutral position, adjust the left and right pump control rod
linkages that connect the steering control to the pump control arms until the
wheels stop, or creep slightly in reverse.
f) Adjust the left pump linkage by rotating the tracking adjustment knob.
g) Adjust the right pump linkage by using a wrench to turn the double nuts on
the assembly. See Figure 16.