Exmark Lazer Z Operator's Manual page 59

Check to make sure brake is adjusted properly. This
procedure must be followed after the first 100 hours
or when a brake component has been removed or
replaced.
1. Drive the machine onto a level surface.
2. Disengage the blade control switch (PTO), move
the motion control levers to the neutral locked
position and engage the parking brake (lever is in
the "up" position).
3. Stop the engine, wait for all moving parts to stop,
and remove the key.
4. Raise the back of the machine up and support the
machine with jack stands.
CAUTION
Raising the mower deck for service or
maintenance relying solely on mechanical
or hydraulic jacks could be dangerous. The
mechanical or hydraulic jacks may not be
enough support or may malfunction allowing
the unit to fall, which could cause injury.
Do Not rely solely on mechanical or hydraulic
jacks for support. Use adequate jack stands
or equivalent support.
5. Remove the rear tires from the machine.
6. Remove any debris from the brake area.
7. Rotate the drive wheel release handle to the
"released" position. Refer to the Drive Wheel
Release Valves section in Operation.
8. Check to see if there is a visible gap between the
L-bracket and the linkage stop (see Figure 45).
Left Side Shown
1. L-bracket
2. Linkage stop
3. Gap
9. Disengage the park brake, the lever should be in
the down position. Turn the wheel hub by hand
in both directions relative to the caliper; the wheel
hub should move freely between the caliper.
10. If a gap is needed or the wheel hub does not
move freely:
A. Disengage the park brake.
B. Disconnect and fine-tune the rear linkage
assembly:
• Shorten the link to create a gap.
• Lengthen the link to allow wheel hub
movement.
C. Reconnect the rear linkage assembly.
11. Engage the parking brake and check the gap.
12. Repeat steps 9 through 12 until a visible gap is
achieved and the wheel hub rotates freely. Repeat
for the brake on the right side.
13. Rotate the drive wheel release handle to the
"operating" position. Refer to the Drive Wheel
Release Valves section in Operation.
14. Install the rear tires and torque lug nuts to 85-105
ft-lb (115-142 N-m).
15. Remove jack stands.
59
Maintenance
Figure 45
4. Rear linkage assembly
5. Caliper
6. Wheel hub
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