Yanmar 1GM10 Operation Manual page 74

TROUBLESHOOTING
Symptom
Starting Failures:
Starter turns but engine
does not start.
Starter does not turn or
turns slowly (engine can
be turned manually).
Engine cannot be turned
manually.
68
Probable Cause
No fuel
Fuel filter is clogged.
Improper fuel
Problem with fuel injection
Compression leakage from
intake / exhaust valve
Faulty clutch position
Insufficient battery charge
Cable terminal contact
failure
Faulty safety switch device
Faulty starter switch
Power lacking because
accessory drive is engaged
Internal parts seized
Measure
Add fuel. Bleed fuel system.
Ensure that fuel shut-off
valve is open.
Replace filter element.
Replace with recommended
fuel.
Consult authorized Yanmar
Marine dealer or distributor.
Consult authorized Yanmar
Marine dealer or distributor.
Shift to NEUTRAL and start.
Check fluid level. Recharge.
Replace.
Remove corrosion from
terminals. Tighten battery
cables.
Consult authorized Yanmar
Marine dealer or distributor.
Consult authorized Yanmar
Marine dealer or distributor.
Consult authorized Yanmar
Marine dealer or distributor.
Consult authorized Yanmar
Marine dealer or distributor.
GM Series Operation Manual
Reference
See Filling the Fuel
Tank on page 28.
See Replacing the
Fuel Filter Element
on page 60.
See Diesel Fuel
Specifications on
page 26.
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See Restarting After
Starting Failure on
page 40.
See Inspecting the
Battery Electrolyte
Level (Serviceable
Batteries Only) on
page 58
See Inspecting the
Battery Electrolyte
Level (Serviceable
Batteries Only) on
page 58.
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