Yanmar 2GM20(F)(V)(C) - Engine Starting Failures

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5. Trouble and Troubleshooting
Trouble Probable Cause Measure
Starting Failures
Starter turns, but engine
No fuel . Repleni sh fuel ; vent air
does not start
Fuel filter is clogged. Replace elemen I
Improper fuel
Replace with recommended fuel.
Faulty fuel injection. Ask for repairs.
Compression
leakage from Ask for repairs.
intake/exhaust valve.
Starter does not tum or Faulty clutch pos1tion. Shift to NEUTRAL and start.
tums slowly
Insufficient battery charge. Check rlu1d lever; recharge; replace.
(Eng1ne can be turned Cable terminal contact failure.
Remove rust from terminal; retighten.
manually) Faulty safety sw1tch device. Ask for repairs.
Faulty starter switch. Ask for repairs.
Power lacking due to other use. Ask for repairs.
Consult your dealer.
Eng1ne cannot be turned Internal parts seized; broken. Ask for repairs.
manually
Abnormal
Exhaust Colour Load 1ncreased Inspect propeller
Black smoke Contaminated 1ntake silencer
Clean element.
Improper fuel. Replace with recommended fue l.
Faulty spraying ot
fuel Injection valve. Ask for repairs.
Incorrect intake/exhaust va l ve head Ask for repairs.
clearance.
Wh1te smoke Improper fuel. Ask for repairs.
Faulty spraying of fuellnjeclion
valve. Ask tor repairs.
Fuel injection timing off.
Ask for
repairs.
Lube oil bums; excessiVe consumption. Ask for repa1rs.
Consulting Your Ya nmar Dealer or Distributor
Refer difficult problems and repairs to your Yanmar dealer or distributor.
At the time
of trouble, check and report the following:
1. Engine model and number:
2. Boat name, material
of hull, size (tons):
3. Use, type
of fishing done, no. of hours run:
4. Total no. of operation hours (refer to hour metre), age
of boat:
5. Condition before trouble (engine rpm, type
of operation, load condition, etc.):
6. Details
of trouble:
Reference
3.3.2(3)
4.3.4(1)
3.3.2(1)
4.3.2{4)
4.3.4(6)
3.1.1
3.1.1
(exhaust colour; sound of engine; does engine start; can engine be turned manually;
type of fuel used; brand and viscosity of lube oil; etc.)
7. Past prob lems and repairs:
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