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Phenomenon
Assumed cause
Action
Discharged battery
Charge or
replace
Cell motor
Detached or loosened or corroded
Repair
will not run
battery terminal
Engine will
or revolution
Battery switch set at OFF position
Turn ON
not start
speed is low
Improper starter switch
Replace
up
Improper starter
Replace
Broken lead wire
Repair
Cell motor
Fuel shortage
Supply
runs
Blinded fuel filter
Replace elem ent
Air in fuel system
Remove
Air in fuel system
Remove
Speed will not rise
Blinded fuel filter
Replace element
Compression failure
Repair engine
Blinded air cleaner
Replace elem ent
Oil shortage
Supply
Engine stop by oil failure
Oil pressure switch failure
Replace
Blinded oil filter
Replace elem ent
Cooling water shortage
Supply
Over heat
Fan belt looseness
Adjust
(water tem perature)
Blinded core of radiator
Clean
Engine therm ostat failure
Repair
Voltmeter failure
Replace
AVR failure
Burned ZNR
V oltm eter will not operate
Quenched residual magnetism
Contact
(Except 25USI USI2)
distributor or
Burned rotary rectifier
our office
Disconnected rotor wiring
Burned generator wiring
Voltmeter failure
Replace
AVR failure
R ated voltage will not be
VR failure
Contact
reached
Burned rotary rectifier
distributor or
Burned ZNR
our office
Burned generator wiring
Low speed
Increase
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