Outboard motor troubleshooting
4-12
Symptom 1: Discharged battery.
Buzzer comes on, oil
pressure a
lert indica-
tor comes on
Insufficient engine oil
Check the engine oil level. 10-8
Check for engine oil leakage. 2-21
Check the valve seals and valves. 7-30
Check the piston rings. 7-49
Engine oil pressure
decrease
Check the oil pressure switch. 5-20
Check the oil pump. 7-43
Check the oil strainer. 9-19
Check the relief valve. 7-42
Check the oil passages (power unit
and the
oil pump).
2-21
Replace the oil filter. 10-18
Symptom 2 Cause Checking steps
See
p
age
Low voltage indicator
activ
ates on the
gauge
Battery performance
decrease
Check the battery capacity and spe-
cific gravity.
10-8
Check the battery cable and termi-
nals for proper connections.
3-5
Short, open, or loose con-
nection in charging circuit
Check the charging circuit for wiring
conn
ection and damage.
A-9
A-11
Lighting coil malfunction
Measure the lighting coil output
peak v
oltage.
5-25
Measure the lighting coil resistance. 5-25
Rectifier/regulator malfunc-
tion
Measure the rectifier/regulator out-
put peak voltage.
5-26
Check the rectifier/regulator for con-
tinuity.
5-26
Symptom 2 Cause Checking steps
See
p
age
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