Not for
Reproduction
27
time. Determining operating time is easily accomplished by
observing the digital display panel.
The digital display panel depicts both engine hours and PTO
run time hours. The maintenance intervals are based on the
engine hours as displayed by the digital display panel.
UNIT MAINTENANCE
Before Each Use
Check the safety interlock system.
Check the unit's brakes.
Check the unit for loose hardware.
Check the hydraulic oil level.
Every 25 Hours
Lubricate unit.*
Check tire air pressures.
Every 50 Hours
Initial change of gearbox oil
Every 100 Hours
Clean deck and check/replace mower blades.*
Check the gearbox oil level.
Clean the battery and battery cables.
Every 250 Hours or Annually**
Change the hydraulic oil and oil filter.*
Change the gearbox oil.
* More often in hot (over 85°F; 30°C) weather or dusty operating
conditions.
** Whichever comes first.
ENGINE MAINTENANCE
Before Each Use
Check the engine oil level.
Check the engine coolant level.
Check/Clean radiator screens
Every 25 Hours
Check/Clean cooling fins and intake.
Every 250 Hours
Check/Replace gearbox oil**
Every 500 Hours
Check/Replace engine oil and filter.***
Check/Replace air filter.***
Check/Replace primary filter/water separator element.***
Check/Replace secondary fuel filter.***
Every 1000 Hours
Check/Replace engine coolant.
* More often in hot (over 85°F; 30°C) weather or dusty operating
conditions.
** Change original gearbox oil after initial 50 hours of operation.
*** Refer to engine owner's manual.
Maintenance Procedures
Service and Maintenance Safety
WARNING
Amputation and crushing hazard.
Specific steps must be taken in order to perform service and
maintenance procedures safely:
• Read and follow all the applicable safety and
instructional messages in this manual.
• Always disengage the mower blades, set the parking
brake, turn the engine OFF, remove the ignition key,
and wait for all movement to stop prior to performing
service and maintenance procedures.
Welding on Units Equipped with an
Electronically Controlled Engine
Correct welding procedures are necessary to avoid damage
to the engine's ECM, sensors, and associated components.
Disconnect the electrical connections from the ECM before
welding on the unit.
Disconnect the Electrical Connection from the ECM:
1. Release the seat latch and raise the seat plate to access
the battery.
2. The unit is equipped with a warning light (A, Figure 29)
that will illuminate when it is not safe to remove the
battery cables. Wait for the warning light to shut off before
removing the battery cables.
29
3. Disconnect the cables from the battery, negative [-] cable
(B) first, positive [+] cable (C) last.
4. Remove the battery (D) from the unit.
5. The ECM (E) is bolted to a plate that is mounted to the
frame of the unit by three (3) sets of hardware and ISO
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