Troubleshooting - Kubota WSM ZD321 Workshop Manual

ZD321, ZD326, ZD331, WSM

1. TROUBLESHOOTING

Symptom
Engine Does Not
Start
Starter Does Not Run
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
or bearing
Compression leak from cylinder
Improper valve timing
Piston ring and cylinder worn
Excessive valve clearance
Stop solenoid malfunctioning
Battery discharged
Starter malfunctioning
Key switch malfunctioning
Wiring disconnected
Replenish fuel
Vent air
Change fuel and
repair or replace fuel
system
Clean or replace
Replace
Use specified fuel or
engine oil
Use specified fuel
Tighten retaining nut
Adjust
Replace
Clean or replace
Replace
Repair or replace
Replace head
gasket, tighten
cylinder head screw,
glow plug and nozzle
holder
Correct or replace
timing gear
Replace
Adjust
Replace
Charge
Repair or replace
Replace
Connect
1-S1
ENGINE
Reference
Solution
Page
G-7
G-36
–
G-34
G-30
G-7
–
–
1-S25, 37,
42
1-S36
1-S33
1-S37, 42
1-S44 to 51
1-S63 to 77
1-S35
1-S39, 43
1-S45, 50
1-S21
1-S32
G-26
1-S32,
5-S19
5-S8
–
W1014322
KiSC issued 04, 2007 A