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62-11175 COMFORTPRO SERVICE MANUAL
3-2
SYMPTOM
PROBABLE CAUSE
SOLUTION
REFERENCE
Engine does not start
•
No fuel
•
Check fuel stand pipe length
•
A-8
(starter works)
•
Air in the fuel system
•
Bleed air
•
A-8
•
Water in fuel system
•
Drain fuel tank(s) and replace
fuel filters
•
Fuel solenoid not pulling in
•
Check for rust in plunger/check
for voltage
•
Check for bent solenoid linkage
•
Fuel pipe/line clogged
•
Clean/replace
•
Fuel filters clogged
•
Replace
•
A-8
•
Excessively high viscosity of
•
Use the specified engine oil
•
A-2
engine oil at low temperature
•
Fuel leak due to loose injection
•
Tighten nut
•
Kubota Manual*
pipe retaining nut
•
Injection nozzle clogged/defective
•
Clean/replace
•
Kubota Manual*
•
Injection pump defective
•
Replace
•
Kubota Manual*
•
Fuel lift pump defective
•
Replace
•
Low cylinder compression
•
Repair/replace engine
•
Kubota Manual*
•
Valve spring broken, valve stuck
•
Repair/replace
•
Kubota Manual*
•
Excessive valve clearance
•
Adjust
•
Kubota Manual*
•
Glow plugs malfunctioning
•
Check/replace
•
Kubota Manual*
•
Plugged air filter
•
Clean/replace
•
Kubota Manual*
3.1
APU (AUXILIARY POWER UNIT)
Each symptom is followed by a probable cause and suggested solution. To isolate the
possible cause, proceed in a systematic manner to determine the faulty component. This
guide does not cover all possible situations that may occur under all conditions of operation.
Before using this guide verify correct voltage and ground to components.
WARNING
Disconnect the batteries from the
APU before performing any
repairs.
*Kubota Workshop Manual 97897-02400