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yamahaulerbillh1

Qestion On WR Models

11 posts in this topic

It’s a reservoir tank to hold coolant.

When the radiator and the coolant gets hot, the coolant expands and it goes into the reservoir tank.

As the coolant cools, it contracts forming a vacuum in the cooling system which draws coolant from the reservoir tank into the cooling system keeping it full.

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You can remove it, YZF doesn't have one. If you do remove it, don't forget to pack a gallon of coolant so you can top off the radiator after every ride. If you ride tight, slow single track, you WILL lose coolant without the resevoir.

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If it's anything like a car, you take off the overflow tank and you have to change the radiator cap to a "non recovery cap"

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I've had mine removed for almost 1000 miles...no problems. All you have to do is replace the radiator cap with a KX500 cap (1.6 instead of 1.1). I've never lost any coolant due to heating. I lost a little when I went to 14,000 ft in Colorado, but who wouldn't???

:)

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I am an X XR650R owner and we always used a little water wetter in the coolant. Would this not be a good idea for the WR450 also. Tim

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