Kubota WSM STV32 Workshop Manual page 74

STV32 · STV36 · STV40, WSM
Symptom
Engine Revolution Is
Not Smooth
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
Probable Cause
A Fuel filter clogged or dirty
A Air cleaner clogged
A Fuel leak due to loose injection pipe retaining
nut
A Injection pump malfunctioning
A Incorrect nozzle injection pressure
A Injection nozzle stuck or clogged
A Governor malfunctioning
A Excessive engine oil
A Piston ring and cylinder worn or stuck
A Incorrect injection timing
A Deficient compression
A Overload
A Low grade fuel used
A Fuel filter clogged
A Air cleaner clogged
A Deficient nozzle injection
A Incorrect injection timing
A Engine's moving parts seem to be seized
A Uneven fuel injection
A Deficient nozzle injection
A Compression leak
A Piston ring's gap facing the same direction
A Oil ring worn or stuck
A Piston ring groove worn
A Valve stem and valve guide worn
A Oil leaking due to defective seals or packing
A Injection pump's plunger worn
A Deficient nozzle injection
A Injection pump broken
Change
Clean or replace
Tighten retaining nut
Replace
Adjust
Repair or replace
Repair
Reduce to specified
level
Repair or replace
Adjust
Adjust top clearance
Loosen load
Use specified fuel
Replace
Clean or replace
Repair or replace
nozzle
Adjust
Repair or replace
Replace injection
pump
Repair or replace
nozzle
Replace head gasket,
tighten cylinder head
screw, glow plug and
nozzle holder
Shift ring gap
direction
Replace
Replace piston
Replace
Replace
Replace pump
Repair or replace
nozzle
Replace
1-S2
ENGINE
Reference
Solution
Page
G-22
G-21
1-S27
1-S31
1-S18
1-S18
1-S32
G-13
1-S55, S61
1-S17
1-S11
G-8
G-22
G-21
1-S18
1-S17
1-S18
1-S18
1-S11
1-S40
1-S55, S56
1-S56
1-S47
1-S31
1-S18
1-S31
KiSC issued 04, 2006 A