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1. Inlet of cooling water channel
2. Place the outboard motor in water, ensure that the water level is above the anti-swirl
baffle, and start the engine.
3. Check whether there is water flowing out of the cooling water observation hole. If there
is no water flow or the water flow is interrupted, check the cooling water channel in the
outboard motor.
1. Cooling water observation hole
Thermostat
1. Remove thermostat cover and then remove thermostat.
2. Hang the thermostat in a container containing water.
3. Heat the container.
4. Check the opening of thermostat valve at the specified water temperature; If it does not
meet the specifications, replace it.
5. Install thermostat and thermostat cover, and tighten the bolts to the specified value.
Propeller
Check propeller blades and internal splines for rupture, damage or wear. Replace them if
necessary.
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