Re: Heat Riser


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Posted by David Sherman [72.47.9.228] on Monday, August 02, 2010 at 22:16:46 :

In Reply to: Heat Riser posted by Stefan in S.C. [70.154.45.154] on Monday, August 02, 2010 at 15:49:19 :

It's such a hassle getting the manifolds apart to get to the heat riser, that any time I have them apart I definitely make sure it's working. The problem is with the ones that you have to manually set to "summer" or "winter", if it doesn't get moved for a long time, it seizes up and gets full of soot inside and then it won't move. I learned the importance of it on my first Sno-Cat, where the carb iced up on my first trip up to Moon Pass and I had a real slow trip back, with the throttle wide open and the machine just barely crawling along. Why anybody would set the heat riser on a Sno-Cat to "Summer" is beyond me, but they had, and it had been that way for so long that even when I took it all apart, the entire space above the heat riser was full of soot that I had to dig out with screwdrivers and drills. It occurs to me it might be handy to rig a choke cable to work the heat riser from inside the cab. The Sno-Cat is built like an airplane anyway (aluminum skin over thin-wall square steel tubing) and airplanes have carb heat controls.



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