Flushing With Water - TOHATSU MFS 25D Service Manual

Maintenance

33) Flushing with Water

Exhaust gas contains carbon monoxide,
which may result in gas poisoning. Do not
start the engine with the outboard motor
placed in an enclosed area such as a boat
house etc.
Touching a rotating propeller may lead to
injury.
Be sure to remove the propeller before
running the engine on land.
Flushing with water using the gear case flushing device
1. With the propeller and thrust holder removed, seal the
sub-water inlet 1 with a tape 2 to prevent air from being
sucked into the water pump.
2. Attach the gear case flushing device 3 to the water
strainer 4 area.
3. Insert the water hose into the gear case flushing device
and turn on water supply.
4. Set gear shift to neutral (N) and start engine.
5. Check that the cooling water check port discharges water,
and run engine for 3 to 5 minutes at idle speed.
6. Stop the engine and water supply, then remove gear case
flushing device and tape and install the thrust holder and
propeller.
Flushing with water using a hose joint
1. Tilt down the outboard motor.
Remove the flushing connector cap 1 from the outboard
2.
motor, and screw in the hose joint 2.
3. Connect a water hose to the hose joint. Turn on the water
and adjust the flow. Continue flushing the outboard motor
for 3 to 5 minutes.
Do not operate the engine.
4. Remove hose joint.
Check for damage or crack in the seal 3 and O-ring 4,
5.
then install flushing connector cap.
Cooling water leaks may lead to the engine
overheating.
Be sure to reattach the flushing connector
cap.
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WARNING
CAUTION
CAUTION
CAUTION
4st 25/30 2022