Exmark Lazer Z SX Diesel Models 4500-501 Rev A - Manual (Page 46)

Maintenance
Cleaning
Clean Engine Cooling
System
Service Interval: Before each use or daily
(May be required more
often in dry or dirty
conditions.)
CAUTION
Excessive debris around the engine cooling
air intake and inside of the pump drive
belt compartment and damaged or missing
rubber baffles can cause the engine and
hydraulic system to overheat which can
create a fire hazard.
• Clean all debris from inside of pump drive
belt compartment daily.
• Clean debris from radiator screen and
core daily.
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Clean all debris from inside of pump drive belt
compartment.
3. Wipe debris from screen in engine cover.
4. Rotate engine cover forward and wipe debris
from radiator core as required.
5. Clean debris from radiator fins with compressed
air.
Important: If debris or air can not be blown
through the radiator, see Cleaning of the
Radiator section.
6. Inspect seals in engine cover and replace if
necessary.
Remove Accumulated Debris
from Engine
Service Interval: Before each use or daily
Engine parts should be kept clean to reduce the risk
of overheating and ignition of accumulated debris.
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Remove air deflector panel from behind seat.
3. Clean around flywheel, cylinder head, injectors,
and injector pump.
4. Reinstall the air deflector panel.
Important: Do Not use water to clean engine.
Use low pressure compressed air. See Engine
Owner’s Manual.
Cleaning of the Radiator
Service Interval: Every 50 hours (May be
required more often in dry
or dirty conditions.)
1. Stop engine, wait for all rotating parts to stop and
remove key. Engage parking brake.
2. Allow engine to cool.
3. Rotate seat and engine cover forward.
4. While holding fan up, remove the four screws
attaching the fan to the shroud. Disconnect and
remove the fan.
5. Using compressed air, blow out debris stuck
between the fins of the entire radiator, both from
the top down and from the bottom up.
6. If debris remains, it may be necessary to use water
from a low pressure hose. If the radiator is clean,
proceed to step 8.
7. Cover the engine with a piece of cardboard, or a
plastic sheet. Squirt water down through the fins.
Blow through with low pressure air from both
directions. If debris remains, repeat until clean.
8. Re-assemble the fan to the radiator. Reconnect
the fan.
9. Start the engine to ensure the fan is functioning
properly.
Clean Debris From Machine
Service Interval: Before each use or daily
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Clean off any oil, debris, or grass build-up on the
machine and cutting deck, especially under deck
belt shields, around the fuel tank, around engine
and exhaust area.
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