Troubleshooting; For General - wsm wg972-e4 Workshop Manual

WG972-E4, WSM

1. TROUBLESHOOTING

[1] FOR GENERAL

Symptom
Engine Does Not Turn
Over
Engine Turns Over
Slowly But Does Not
Start
Engine Turns Over At
Normal Speed But
Does Not Start
Probable Cause and
Checking Procedure
1. Seizure of crankshaft,
piston, etc.
2. Battery discharged
3. Wire disconnection or
damaged
4. Starter malfunctioning
1. Increased resistance of
moving parts
2. Excessively high viscosity
engine oil at low
temperature
1. Fuel does not flow
2. Fuel filter clogged
3. Damaged spark plug
4. Damaged ignition coil
5. Wires disconnection or
damaged
6. Bad connection of ignition
coil and spark plug
7. Clogged air cleaner
8. Improper valve clearance
9. Improper intake and
exhaust valve sealing
10.Excessive wear of rings
and liners
Solution
Check if crankshaft rotates
Repair or replace
Charge
Check the wire harness
Reconnect or replace
Repair or replace
Repair or replace
Use specified engine oil
Check the fuel tank, fuel filter, fuel hoses
and fuel pump
Repair or replace
Check and replace
Check and adjust or replace
Check and replace
Check the wire harness
Reconnect or replace
Reconnect
Clean or replace
Check the compression pressure
Adjust
Check the compression pressure
Check and replace
Check the compression pressure
Check and replace
1-S1
ENGINE
Reference
Page
–
1-S33,
1-S36
–
–
–
1-S22,
1-S23,
1-S58
–
G-15
–
G-15
G-16, G-17
1-S20,
1-S21
1-S21
–
–
–
G-14, G-24
1-S14
1-S15
1-S14
1-S42
1-S14
1-S50,
1-S56
KiSC issued 07, 2015 A