I have a Craftsman riding lawn mower tractor (model # 917.273390).
So the issue is that when I shift the gears for it to go forward or in reverse it does not move at all. It nudges like an inch and then stops
I removed the back plate which basically protects the transmission and pulley area and noticed that when the tractor is in idle the pulley is spinning fine (the pulley is connected by a belt which is run by the engine). The pulley sits right on top of the transmission.
When I shift the gears in forward or reverse the pulley stops spinning. I'm guessing that either the belt is not tight enough or something is broken inside the transmission.
Also when I manually pushed the tractor I noticed the pulley spinning.
P.S. Here is a link to the transmission diagram - http://www.searspartsdirect.com/part...dMod=917273390