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outboard motor.
1. Cooling water observation hole
Thermostat
1. Remove thermostat cover and then remove thermostat.
1. Thermostat cover 2. 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.
Check the main switch/stop switch
1. Check if the engine starts when the startup switch is turned to start (START). If it cannot
start, check the startup switch.
2. When the startup switch is turned off (OFF), check if the engine stops. If the engine does
not stop, please check the startup switch.
1. Close 2. Open 3. Start
Water temperature Valve opening height
Below 58℃ Do not open
Above 70℃ Greater than 4.3mm
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