Bleeding the cooling system

[Warden]

What is the best way to bleed the cooling system?

In the Yamaha owner's manual, it says to mix coolant and water @ a 60:70 ratio, WHAT the HELL does that mean. The last time I checked ratios total 100%

Thanx for all your help guy's

 

[Prairie Dog]

Too much info not needed. Mix the same as for your car. Half and half usually works for me. I just raised the rear of my sleda bit, bled the air from the rear exchanger and then topped it off. Not difficult at all. Haven't had a problem since.

 

[A K MtnViper]

A 50-50 mix should protect you from freezeing down to -30 F. A mix of 60%(antifreeze)-40%(water) should be good to -45 F. Never mix any stronger than 60-40 or you start losing cooling ability.
Do not trust a dealer to do this right, check it with a tester. Prairie dog has bleeding down pat, it is that simple. But before you go riding warm your sled up, feel your running boards and make sure your getting circulation.

 

[MEAT]

Where exactly do you bleed from? Is there a bleed screw?

 

[NY_Nytro]

There is a bleed screw on the rear cross-over tube.

 

[impalapower]

In the Yamaha owner's manual, it says to mix coolant and water @ a 60:70 ratio, WHAT the HELL does that mean. The last time I checked ratios total 100%

Thanx for all your help guy's

I use the Honda premix in the blue bottle.

 

[Riceburner]

After you do that there is something else you may want to do.
Or perhaps do it instead of the bleed screw as it is easier.
On a tilted trailer, or with your sled run up a snowbank at a pretty good angle, fire her up with the coolent cover cap off.
Run her until she is good an hot.
[check you exchangers to make sure all are hot.]
That has cleaned out all the bubbles for me and a number of others.
After putting on the rear exchanger and bleeding at the exchanger, this procedure took out more air and she needed another 6 ounces or so.

Dave