Exmark LAZER Z HP 523, Operator'S Manual

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Maintenance
13. Torque the nut to 75-80 in-lb (8-9 N-m), loosen,
then re-torque to 20-25 in-lb (2-3 N-m). Make
sure axle does not extend beyond either nut.
14. Reinstall the seal guards over the wheel hub and
insert wheel into caster fork. Reinstall caster bolt
and tighten nut fully.
Important:
To prevent seal and bearing damage,
check the bearing adjustment often. Spin the
caster tire. The tire should not spin freely
(more than 1 or 2 revolutions) or have any side
play. If the wheel spins freely, adjust torque on
spacer nut until there is a slight amount of drag.
Reapply thread locking adhesive.
Lubricate Brake Handle Pivot
Service Interval: Every 160 hours
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Lubricate bronze bushings on brake handle pivot
with a spray type lubricant or light oil.
Lubricate Brake Rod
Bushings
Service Interval: Every 160 hours
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Unhook seat latch and tilt seat up.
3. Lubricate bronze bushings on each end of brake
rod shaft with a spray type lubricant or a light oil
(bushings are located to the inside of the flange
bearings).
Lubricate Motion Control
Bronze Bushings
Service Interval: Every 160 hours
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Unhook seat latch and tilt seat up.
3. Lubricate bronze bushings on flange bearings
securing the motion control arm shafts with a
light oil or a spray type lubricant.
Lubricate Seat Switch
Actuator
Service Interval: Every 160 hours
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Unhook seat latch and tilt seat up.
3. Lubricate switch actuator rod with spray type
lubricant or light oil.
Check Spark Plugs
Service Interval: Every 160 hours
Remove spark plugs, check condition and reset gaps,
or replace with new plugs. See Engine Owner’s
Manual.
Change Fuel Filter
Service Interval: As required
A fuel filter is installed between the fuel tanks and the
engine. Replace when necessary.
Replacement Filters
Kohler
Kohler P/N 2405010
Change Hydraulic System
Filter
Service Interval: After the first 250 hours
Yearly thereafter
Note:
Summer use above 32°F (0°C) use only
Exmark Part No. 109–4180.
Winter use below 32°F (0°C) use only Exmark Part
No. 1-523541.
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Locate filter under left rear corner of engine deck.
3. Carefully clean area around filter. It is important
that no dirt or contamination enter hydraulic
system.
4. Unscrew filter to remove and allow oil to drain
from reservoir.
Important:
Before reinstalling new filter, fill
it with Mobil 1 15W-50 and apply a thin coat
of oil on the surface of the rubber seal.
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