Yamaha F150B - Cooling System

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Cooling system
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Cooling system
The fresh cooling water is taken into the front of the trim tab and supplied to the exhaust passage of
the lower case to cool the exhaust gas.
Cooling water also flows around the muffler to cool the upper case and reduce exhaust noise.
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Cooling water flow
PCV
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Thermostat
Cylinder block
Cylinder head
Cylinder block
Exhaust cover
Exhaust guide
Oil pan
Water pump
Water inlet
Water
Fuel cooler
Cooling water pilot hole
Upper case (muffler)
Lower case
Propeller boss
Tr i m t a b
Lubrication system / Cooling system