Troubleshooting - Kubota WSM OC60-E2 Workshop Manual

OC60-E2, OC95-E2, WSM

1. TROUBLESHOOTING

Symptom
Engine Does Not Start
Engine Revolution Is
Not Smooth
Probable Cause
No fuel
Air in the fuel system
Water in the fuel system
Fuel pipe clogged
Fuel filter clogged
Excessively high viscosity of fuel or engine oil
at low temperature
Fuel with low cetane number
Fuel leak due to loose injection pipe retaining
nut
Incorrect injection timing
Fuel camshaft worn
Injection nozzle clogged
Injection pump malfunctioning
Seizure of crankshaft, camshaft, piston,
cylinder liner or bearing
Compression leak from cylinder head
Deficient compression
Improper valve seat alignment, valve spring
broken, valve seized
Incorrect valve timing
Piston ring and liner worn
Excessive valve clearance
Fuel filter clogged or dirty
Air cleaner clogged
Fuel leak due to loose injection pipe retaining
nut
Injection pump malfunctioning
Incorrect nozzle injection pressure
Injection nozzle stuck or clogged
Fuel overflow pipe clogged
Governor malfunctioning
Replenish fuel
Vent air
Replace fuel and
repair or replace fuel
system
Clean
Clean and replace
Use the specified fuel G-4
Use the specified fuel G-4
Tighten nut
Adjust
Replace
Clean
Replace
Replace
Replace head gasket,
Tighten cylinder head
bolt and nozzle holder
Correct valve seat
Check and correct
valve
Replace
Adjust
Replace
Adjust
Clean
Clean or replace
Tighten nut
Replace
Repair or adjust
Replace
Clean
Repair
S-1
ENGINE
Reference
Solution
Page
G-8
S-15
S-47
G-9, 10
S-26
S-44, 47
S-12
S-12
S-42
S-12
S-44, 46
G-9
G-8
G-8
S-26
S-17
M-10, 12