Kubota WSM OC60-E2, Workshop Manual

Page: 53 / 106

OC60-E2, OC95-E2, WSM ENGINE
S-1
1. TROUBLESHOOTING
Symptom Probable Cause Solution
Reference
Page
Engine Does Not Start
A
No fuel Replenish fuel
A
Air in the fuel system Vent air
A
Water in the fuel system Replace fuel and
repair or replace fuel
system
A
Fuel pipe clogged Clean
A
Fuel filter clogged Clean and replace G-8
A
Excessively high viscosity of fuel or engine oil
at low temperature Use the specified fuel G-4
A
Fuel with low cetane number Use the specified fuel G-4
A
Fuel leak due to loose injection pipe retaining
nut Tighten nut
A
Incorrect injection timing Adjust S-15
A
Fuel camshaft worn Replace S-47
A
Injection nozzle clogged Clean G-9, 10
A
Injection pump malfunctioning Replace S-26
A
Seizure of crankshaft, camshaft, piston,
cylinder liner or bearing Replace S-44, 47
A
Compression leak from cylinder head Replace head gasket,
Tighten cylinder head
bolt and nozzle holder
Correct valve seat S-12
A
Deficient compression Check and correct
valve S-12
A
Improper valve seat alignment, valve spring
broken, valve seized Replace S-42
A
Incorrect valve timing Adjust S-12
A
Piston ring and liner worn Replace S-44, 46
A
Excessive valve clearance Adjust G-9
Engine Revolution Is
Not Smooth
A
Fuel filter clogged or dirty Clean G-8
A
Air cleaner clogged Clean or replace G-8
A
Fuel leak due to loose injection pipe retaining
nut Tighten nut
A
Injection pump malfunctioning Replace S-26
A
Incorrect nozzle injection pressure Repair or adjust S-17
A
Injection nozzle stuck or clogged Replace
A
Fuel overflow pipe clogged Clean
A
Governor malfunctioning Repair M-10, 12