Yamaha F50F - Page 291

6C13G11
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Cooling system
Check the oil pump for debris or
oil leaks.
Yes
No
Check the oil
passage.
Debris or leaks?
Yes
No
Clean or replace the defective
parts.
Check the ignition system, fuel
system, or cooling system.
Out of specification?
Clean or replace the cooling
water passage.
Yes
Debris or leaks?
No
Check the thermostat.
No
Yes
Check the cooling water pas-
sage for debris or leaks.
Good condition?
Replace the thermostat.
Check the cooling water tem-
perature sensor resistance.
Continued on next page.
Power unit