Mercury Snowmobiles Discussion Board

I just picked up a couple of 76 sno twisters....they are both in need of some work. Can anyone tell me where to find a service manual for these sleds? Also, are there any parts that will interchange b/n a 75 and 76 sno twister? I have alot of 75 s/t parts and was hoping some would interchange....jac...

I have a completely stock '75 S/T 440 that I restored last year. It is lacking on the bottom end for some reason. Mid range and top end it runs great. On a rolling start it will pick up rpm and run good. My problem is off of the line. Off of the line, it bogs down and takes a while to build up rpm. ...