Outboard motor troubleshooting
4-32
Symptom 1: Discharged battery.
Buzzer comes on.
Oil pressure alert in-
dicator comes on
Insufficient engine oil
Check the engine oil level. 10-10
Check for engine oil leakage. 2-49
Check the valve stem seals and
valves.
7-63
Check the piston rings. 7-79
— Measure the oil pressure. 7-1
Engine oil pressure de-
crease
Check the oil pump. 7-70
Check the oil strainer. 9-29
Check the relief valve. 7-77
Check the oil passage (power unit
and oil pump).
2-49
Replace the oil filter. 10-13
Engine speed can-
not increase when tilt
up
PTT is raised too high while
cruising
Check the numerical value of PTT
protection control range.
2-28
PTT protection con-
trol is not deactivated
when the trim is low-
ered
No change in the PTT sen-
sor output voltage when
the PTT is operated
Check the PTT sensor. 5-53
Symptom 2 Cause Checking steps
See
page
Low voltage indicator
activates on the
gauge
Battery performance de-
crease
Check the battery capacity and
specific gravity.
10-9
Check the proper connection of
battery cables and terminals.
—
Short, open, or loose con-
nection in charging circuit
Check the proper connection of the
charging circuit and for damage.
A-16
Stator assembly malfunc-
tion
Measure the lighting coil resistance. 5-34
Rectifier/regulator mal-
function
Check the rectifier/regulator for
continuity.
5-34
Electrical management box
malfunction
Check the rectifier/regulator output
voltage.
5-34
Check the electrical management
box terminal and wire harness.
A-16
Symptom 2 Cause Checking steps
See
page
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