SECTION FOUR
–
SERVICE AND MAINTENANCE
P a g e
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108268/49-053 Rev M LEGEND BRANDS MODEL APEX 570
ENGINE TROUBLESHOOTING
ENGINE WILL NOT START (STARTER DOES NOT TURN OVER)
PROBABLE CAUSE
SOLUTION
Main circuit breaker on the control panel has
been tripped.
After inspecting the unit to determine the cause of the tripped
breaker, press the reset button.
Loose or corroded battery connections.
Clean, tighten or replace the battery terminals.
Dead battery.
Recharge or replace battery
Defective ignition switch.
Test ignition switch for power going into the switch. If there is
power going in, but none coming out, replace the switch.
Defective starter motor.
Test the starter motor. Replace if necessary.
Vacuum pump seized.
Refer to the vacuum pump manufacturer service and repair
manual.
STARTER TURNS OVER BUT ENGINE WILL NOT START
PROBABLE CAUSE
SOLUTION
Recovery tank is full.
Empty the recovery tank.
Defective fuel pump.
Replace the fuel pump.
Loose or broken wires leading to the recovery
tank float switch.
Repair or replace any broken electrical connections.
Defective float switch inside recovery tank.
Check switch for proper operation. Replace if necessary.
Oil pressure switch (located on engine), fuel
shut-off solenoid (located on engine).
Test these components. If any are defective, replace. Consult
the Kubota Engine Operation and Maintenance Manual.
Engine is malfunctioning.
Refer to Kubota Engine Operation and Maintenance Manual.
ENGINE STOPS RUNNING DURING NORMAL OPERATION
PROBABLE CAUSE
SOLUTION
Engine is out of gasoline.
Check the fuel tank.
Recovery tank is full.
Empty recovery tank.
Main circuit breaker on the control panel has
been tripped.
After inspecting the unit to determine the cause of the tripped
breaker, press the reset button.
Defective fuel pump.
Replace fuel pump.
Defective float switch inside recovery tank.
Check switch for proper operation. Replace if necessary.
Oil pressure switch on engine has shut down
due to insufficient oil pressure.
Refer to the Kubota Engine Operation and Maintenance
Manual.
DO NOT
restart the engine until the cause is
determined and corrected.
No ignition in the engine or the engine is
malfunctioning.
Refer to the Kubota Engine Operation and Maintenance
Manual.
Summary of Contents for APEX 570
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