Lubricate Motion Control Bronze Bushings; Lubricate Seat Switch Actuator; Check Spark Plugs; Change Hydraulic System Filter - Exmark LAZER Z CT Operator's Manual

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
Briggs & Stratton
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.
Briggs & Stratton P/N
493629
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.
Turn filter clockwise until rubber seal contacts the
filter adapter, then tighten the filter an additional
2/3 to 3/4 turn.
5. Fill reservoir as stated in Check Hydraulic Oil
Level section.
6. Raise the rear of machine up and support with
jack stands (or equivalent support) just high
enough to allow drive wheels to turn freely.
7. Start engine and move throttle control ahead to
full throttle position. Move the speed control
levers to the full speed and run for several
minutes. Shut down machine and recheck oil
level.
Note: Do Not change hydraulic system oil (except
for what can be drained when changing filter), unless
it is felt the oil has been contaminated or been
extremely hot.
Changing oil unnecessarily could damage hydraulic
system by introducing contaminates into the system.
Wheel Hub - Slotted Nut
Torque Specification
Service Interval: After the first 100 hours
When tightening the slotted nut on the wheel motor
tapered shaft:
1. Torque the slotted nut to 125 ft-lb (169 N-m).
2. Check distance from bottom of slot in nut to
inside edge of hole. Two threads (0.1 inch) or less
should be showing.
3. If more than two threads (0.1 inch) are showing
remove nut and install washer (P/N 1-523157)
between hub and nut.
4. Torque the slotted nut to 125 ft-lb (169 N-m).
31
Maintenance
Every 500 hours thereafter