
TROUBLESHOOTING
68 GM Series Operation Manual
Starting Failures:
Starter turns but engine
does not start.
No fuel Add fuel. Bleed fuel system.
Ensure that fuel shut-off
valve is open.
See Filling the Fuel
Tank on page 28.
Fuel filter is clogged. Replace filter element. See Replacing the
Fuel Filter Element
on page 60.
Improper fuel Replace with recommended
fuel.
See Diesel Fuel
Specifications on
page 26.
Problem with fuel injection Consult authorized Yanmar
Marine dealer or distributor.
—
Compression leakage from
intake / exhaust valve
Consult authorized Yanmar
Marine dealer or distributor.
—
Starter does not turn or
turns slowly (engine can
be turned manually).
Faulty clutch position Shift to NEUTRAL and start. See Restarting After
Starting Failure on
page 40.
Insufficient battery charge Check fluid level. Recharge.
Replace.
See Inspecting the
Battery Electrolyte
Level (Serviceable
Batteries Only) on
page 58
Cable terminal contact
failure
Remove corrosion from
terminals. Tighten battery
cables.
See Inspecting the
Battery Electrolyte
Level (Serviceable
Batteries Only) on
page 58.
Faulty safety switch device Consult authorized Yanmar
Marine dealer or distributor.
—
Faulty starter switch Consult authorized Yanmar
Marine dealer or distributor.
—
Power lacking because
accessory drive is engaged
Consult authorized Yanmar
Marine dealer or distributor.
—
Engine cannot be turned
manually.
Internal parts seized Consult authorized Yanmar
Marine dealer or distributor.
—
Symptom Probable Cause Measure Reference
GM_OM.book 68 ページ 2013年6月10日 月曜日 午後2時26分
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