01 MXZ 600 cooling question

I am not sure about the fill bottle, but if you heat cycle the motor a few times and wait for the rear cooler to get warm then that verifies that you have coolant moving thought the system, this will burp all the air out and basicly replace all the air with coolant, I just did a motor swap and it took three times of running the sled up to temp and cooling off before the coolant level stopped going down in the bottle, you want to be sure you got the air out. I heat cycled once, then the second times got the reves up to force coolant and air though the cooler back to the bottle. Not sure what the accuel procedure is but this worked good for me and when i took it out to play it was perfect.

Good luck!
Myles

Sounds to me like your thermostat is stuck open. I rebuilt my motor this summer and didn't see coolant streaming through fill bottle until I got it good and hot during the second heat cycle. Pull the elbow off the top of the head and check the operation of the thermostat. May be gummed up if the coolant has never been changed.

This is easy.....and just for the record i think it cirulates that circut till the tstat opens.....but to be very sure.....start the machine and feel the motor keep feeling for a warm up and keep checkin the rear cooler.....if the cooler stays cold till the motor gets really hot(your tstat opens about 110) then suddenly gets warm...your tsat just opened and is behaving normal. I put a temp gauge in mine and i watch it warm slowly till it hits 110 then the cooler gets warm, i will note that i think the line on top of the tstat housing is the return, cause i have coolant temp rise evenly till that opens and then sends coolant down ward towards the cooler. Does that make sence? BTW this is the temp gauge , i wired it to the battery charge circut
http://www.ebay.ca/itm/121041994409...eName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
My sled runs all day at 113 as long as i have snow on the track, best 12 bucks i spent in a while!