Troubleshooting
Symptom 1: Improper oil lubrication.
Symptom 1: Discharged battery
Troubleshooting the lower unit
Troubleshooting consists of the following 3 items:
Symptom 1: Specific trouble conditions
Symptom 2: Trouble conditions of an area or individual part
Cause: Trouble causes of symptom 2
— : Not applicable
Symptom 1: Shift mechanism of the forward gear and reverse gear does not operate prop-
erly.
Symptom 2 Cause Checking step
Oil cannot be seen
through the oil lubrica-
tion check window
Low engine oil level Check the oil level.
Check for engine oil leakage.
Check the valve stem seal and valve.
Check the piston ring.
Insufficient oil lubrication Check the oil pump.
Check the oil strainer.
Check the oil passage.
Symptom 2 Cause Checking step
—
Battery performance decrease Check the battery capacity and specific
gravity.
Short, open, or loose connec-
tion in charging circuit
Check the battery cable and terminals
for proper connections.
Lighting coil malfunction Measure the lighting coil output peak
voltage.
Measure the lighting coil resistance.
Rectifier Regulator malfunction Measure the Rectifier Regulator output
peak voltage.
Check the Rectifier Regulator for conti-
nuity.
Symptom 2 Cause Checking step
—
Shift rod malfunction Check the shift rod joint.
Shift mechanism malfunction
(lower unit)
Check the shift rod for wear.
Check the dog clutch.
Check the forward gear, reverse gear,
and pinion for damage or wear.
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