Kubota WSM OC60-E2 Workshop Manual page 54

OC60-E2, OC95-E2, WSM
Symptom
Either White or Blue
Exhaust Gas Is
Observed
Either Black or Dark
Gray Exhaust Gas Is
Observed
Deficient Output
Excessive Lubricant
Oil Consumption
Fuel Mixed into
Lubricant Oil
Low Oil Pressure
High Oil Pressure
Probable Cause
Excessive engine oil
Piston ring and liner worn or stuck
Incorrect injection timing
Deficient compression
Overload
Low grade fuel used
Fuel filter clogged
Air cleaner clogged
Incorrect injection timing
Moving parts show sign of seizing
Deficient nozzle injection
Compression leak
Piston ring's gaps facing the same direction
Oil ring worn or stuck
Piston ring groove worn
Valve stem and guide worn
Oil leak
Injection pump broken
Engine oil insufficient
Oil strainer clogged
Relief valve stuck with dirt
Relief valve spring weaken or broken
Excessive oil clearance of crankshaft bearing
Excessive oil clearance of crank pin bearing
Oil gallery clogged
Different types of oil
Oil pump defective
Different types of oil
Relief valve defective
Reduce to the
specified level
Replace
Adjust
Check top clearance
and correct valve
recessing
Lessen load
Use the specified fuel G-4
Clean or replace
Clean or replace
Adjust
Repair or replace
Repair nozzle replace S-17
Repair
Shift ring gap
direction
Replace
Replace piston
Replace
Repair
Replace pump
element or pump
Replenish
Clean
Clean
Replace
Replace
Replace
Clean
Use specified type of
oil
Repair or replace
Use the specified type
of oil
Replace
S-2
ENGINE
Reference
Solution
Page
G-6
S-44
S-15
S-12
G-8
G-8
S-15
S-12
S-32
S-46
S-46
S-42
S-26
G-6
G-7
S-35
S-35
S-47
S-47
G-4
S-49, 50
G-4
S-35