SELVA MARINE Grey Whale 200 EFI Service Manual page 388

TRBL
SHTG
Symptom 1: Limited engine speed (below 2,000 r/min)
Symptom 2
• Buzzer comes on
• Overheat warning
indicator comes
on
• Cooling water
does not
discharge from
the cooling water
pilot hole
• Buzzer comes on
• Oil pressure
warning indicator
comes on
9-23
Troubleshooting
Cause 1
Clogged cooling wa-
ter inlet
Water pump mal-
function
Clogged cooling wa-
ter passage
Thermostat malfunc-
tion
Insufficient engine oil
Engine oil pressure
decrease
Cause 2
—
Water pump impel-
ler malfunction
Water leakage from
water pump hous-
ing
—
—
—
Oil pump malfunc-
tion
Clogged oil strainer
Clogged oil pas-
sage
Clogged oil filter
Checking step
Check the cooling
water inlet.
Check the impeller.
Check the Woo-
druff key.
Check the water
pump housing.
Check the insert
cartridge.
Check the outer
plate cartridge.
Check the cooling
water passage
(power unit, exhaust
guide, and upper
case).
Check the thermo-
stat.
Add sufficient oil.
Check the oil pump.
Check the oil strain-
er.
Check the engine
oil passage (power
unit and oil pump).
Replace the oil fil-
ter.
Refer
to
page
3-10
6-5
6-34
6-5
6-34
6-5
6-34
6-5
6-34
6-5
6-34
3-10
3-9
3-5
5-73
7-16
5-2
3-7
6AL3J11