Snow blower stopped 'driving' after two passes. Its a very ordinary about 6 HP horizontal shaft Tecumseh (very similar to B&S) and about
28 inch wide.Expecting it to be a 'drive chain off' problem, as in the past, took bottom plate off.
No problem, both chains were on their cogs and the job I did last year replacing the main wheel bearings and getting the position of the chain drive cogs in line (so that the chain would not drive off) is fine.
Everything appears to work; when the drive handle is operated the friction disk moves (backwards in this case) in whatever position it is in from Fast Forward to Reverse (all that works OK). The friction disk does contact the rubber drive pulley and the rubber pulley is properly attached to its cross shaft and turns it. There is spare travel so it is not that the friction disk is not moving far enough or anything is restricting its contact with the rubber pulley.
However and this is the question. The friction plate is pretty shiny in most areas, also the rubber pulley is also shiny. So much so that at first thought it was polished or even oily. It's not.
So should I 'roughen up' the friction plate, sand paper or grind/sand disc it off? Same with the rubber pulley wheel (it's about 4 inch diameter and has like a rubber tire on its perimeter.
Because the only thing at moment is that while we do need to tune up the motor, adjust the carb, we have installed new plug, and brand new belts of the right type etc. The main problem was that it stopped driving (moving ahead or back). Could 'slipping' cause all that even at lowest speed?
Moving it manually into garage to work on, I noticed we have a very bad skid plate on one side; that was also 'hooking' into the ground and causing part of the problem too!
Any advice welcomed (begged!).