I've got a '75 300 that I've been working on since last season and then thought about selling. I noticed that there is a small black "box" thing...all metal it looks mounted to the frame on the left side under the dash. It has a single yellow wire that isn't hooked up to anything. Is this ...

Since I'm having issues with my '75 300, I've been doing a lot of searching for carb diagrams and settings tips. Found this link to be helpful. It has a diagram and some guidelines for setting the carb. http://ryan55349.tripod.com/johndeeresnowmobiles/id54.html Hope this is helpful to someone. Also,...

Hi all. I'm new to snowmobiling and my first sled is a '75 300 that I picked up. When I first got it, it ran pretty well. But now, I'm having issues with it. Basically, it doesn't idle...it is either flooding out or too lean, and when we keep it going, there is no power...(flooding?) It has enough p...

I'd take a copy of that too if you could:

iridium (at) mchsi.com

Thanks!