3-35
3
4st 25/30 2022
31)
Inspection of Cooling Water Passage
1. Check the water strainer 1 for clogging. Clean if
necessary.
2. Place the outboard motor in the water and start the
engine.
3. Check that cooling water is discharged from cooling water
check port 2. If not, check the water pump and cooling
water passage in the engine.
32)
Inspection of Cooling Water Pressure
1. Measure the cooling water pressure with putting a T-fitting
for pilot tube of pressure gauge on the cooling water hose
between the fuel cooler and cooling water check port.
2. Start the engine and check the water pressure at each
engine speed.
3. Check the water pump and cooling water passages inside
the engine if the water pressure is very low.
Shown water pressure values are reference.
1 Fuel Cooler
2 Drive Shaft Housing Nipple
3 Water Check Port
Engine
Rotation
Water Pressure (Reference)
min
-1
(rpm) kPa psi kgf/cm
2
850 15 2.18 0.153
1500 30 4.35 0.306
3000 60 8.7 0.612
5000 70 10.15 0.714
6000 70 10.15 0.714
To Next Page
Loading...
Need help?
General
