Join Date: Jan 2008
Location: northern ontario
I hate to be the devil here and say it but that is not going to solve your problem. Save yourself the time because that is a completely separate issue. Leaking coolant out the overflow bottle is strictly caused by a blown head gasket. What happens is you get a leak through the gasket due to an uneven surface which allows cylinder pressure... especially at high rpms to push into the water jackets of the cylinder. This creates a lot of pressure internally which then pushes the coolant out the rear because it has no where else to go.
Trust us dude... save yourself the time and effort here of replacing your water pump seals. you NEED to pull your head off and have it machined.
The water pump issue is this... On your right side you have the water pump housing which has the shaft, impeller, seals..etc. Underneath is a hole..called a weep hole. Some just have a hole, some have a 1/4" tube that runs to the rear off of this location. It is at the base of your frame by your right foot when standing on the quad. That is where you will leak coolant if your water pump seals are bad. NOT by the overflow bottle.
I am attempting to save you the biggest hassle and a LOT of time.
x2, its a head-head gasket issue, save yourself some trouble pull it apart now, dont change the water pump seals and run it to see if it fixes it it wont, and the coolant goin in the motor is doin a number on it
2010 YFZ 450 R SE sold
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