Yanmar 3JH4E Operation Manual page 86

TROUBLESHOOTING
Symptom
• Battery low charge
indicator does not go
out during operation
Starting Failures:
• Starter turns but
engine does not start
Compression leakage
from intake / exhaust
valve.
• Starter does not turn or
turns slowly (engine
can be turned
manually)
Power lacking due to
accessory drive being
engaged.
• Engine cannot be
turned manually
80
Probable Cause
V-belt is loose or broken.
Battery is defective.
Alternator power generation
failure.
No fuel.
Fuel filter is clogged.
Improper fuel.
Problem with fuel injection.
See your authorized Yanmar
marine dealer or distributor.
Faulty clutch position.
Insufficient battery charge.
Cable terminal contact failure.
Faulty safety switch device.
Faulty starter switch.
See your authorized Yanmar
marine dealer or distributor.
Internal parts seized.
Measure
Replace V-belt or adjust
tension.
Check battery fluid level,
specific gravity or
replace battery.
See your authorized
Yanmar marine dealer or
distributor.
Add fuel. Bleed fuel
system.
Replace filter element.
Replace with
recommended fuel.
See your authorized
Yanmar marine dealer or
distributor.
-
Shift to NEUTRAL and
start.
Check fluid level.
Recharge. Replace.
Remove corrosion from
terminals. Tighten
battery cables.
See your authorized
Yanmar marine dealer or
distributor.
See your authorized
Yanmar marine dealer or
distributor.
-
See your authorized
Yanmar marine dealer or
distributor.
JH4 Series Operation Manual
Reference
See Checking
and Adjusting the
Alternator V-Belt
Tension on page
62
See Checking
the Battery
Electrolyte Level
(Serviceable
Batteries Only)
on page 66
-
See Filling the
Fuel Tank on
page 30 and See
Bleeding the
Fuel System on
page 30
See Replacing
the Fuel Filter
Element on page
67
See Diesel Fuel
Specifications on
page 27
-
-
See Checking
the Battery
Electrolyte Level
(Serviceable
Batteries Only)
on page 66
-
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