Symptom
Probable Cause
Measure
Reference
Starting Failures:
• Starter turns but
engine does not start
No fuel.
Add fuel. Bleed fuel
system.
page 29 and See
Fuel System on
page 30
Air in fuel line.
Bleed fuel system.
Fuel System on
page 30
Fuel filter is clogged.
Replace filter element.
See Replacing
Element on page
Improper fuel.
Replace with
recommended fuel.
See Diesel Fuel
page 27
Problem with fuel injection.
See your authorized
Yanmar Marine dealer or
distributor.
-
Compression leakage from
intake / exhaust valve.
See your 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.
-
Insufficient battery charge.
Check fluid level.
Recharge. Replace.
on page 62
Cable terminal contact failure.
Remove corrosion from
terminals. Tighten
battery cables.
-
Faulty safety switch device.
See your authorized
Yanmar Marine dealer or
distributor.
-
Faulty starter switch.
See your authorized
Yanmar Marine dealer or
distributor.
-
Power lacking due to accessory
drive being engaged.
See your authorized
Yanmar Marine dealer or
distributor.
-
• Engine cannot be
turned manually
Internal parts seized.
See your authorized
Yanmar Marine dealer or
distributor.
-
TROUBLESHOOTING
6LPA Series Operation Manual
75
© 2007 Yanmar Marine International
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