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Wayne S.
Wayne S., Motorcycle Mechanic
Category: Motorcycle
Satisfied Customers: 1255
Experience:  Experienced and Licensed Motorcycle Mechanic - all sizes and brands welcome.
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I have a yamaha big bear 400 it's a 2001. Just got it . There

Customer Question

I have a yamaha big bear 400 it's a 2001. Just got it . There was no oil in it I think it didn't read anyway on the dipstick. So I put oil in and after 1 hr of riding seams hot and slow and has oil spewing out of the cap when I went to check it
Submitted: 2 years ago.
Category: Motorcycle
Expert:  Wayne S. replied 2 years ago.


Recheck the oil after it cools off and drain
or fill as necessary. Don't screw the dipstick in
when checking. It is best to run it a bit,
let the oil settle awhile and then check the oil again.
When hot it will spew some oil out the filler as the oil
expands when hot. Don't remove the cap when hot.
Did your cooling fan come on? Also check your coolant
tank level. If yours is just oil cooled then check
the fan on that as well.
Could need some cooling system service if overheating.
A stuck thermostat, plugged radiator or bad water pump
can happen or faulty cooling fan or relays.
Check your coolant tank and keep coolant between the level marks.
See if the radiator is full when it cools off.
Expert:  Wayne S. replied 2 years ago.
If yours is oil cooled only, it has a sensor
screwed into the engine which can be
removed and heated in oil to see if the fan kicks on.
Let me know what info might help.

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