Originally Posted By: Fordiesel69
Common problem with these rears. MTD has pretty much cheapened this stuff up so your internals are very low quality pot metal. They cut flat lawns well.. That is about it. Hills, rollers, tiller, plows will typically make short work of these.
More than likely a shift fork snapped and got jammed in there. The grease inside the tranny is also not easy to find, so if you do manage to get it apart, you would have to reuse the old grease. It is not regular multi purpose grease.
If the MTD tranny on CL is the same, go for it!!!
Agreed. They're made extremely cheap and don't last long under any real stress (much like a stamped axle verses a cast iron axle). A shift fork is the most likely culprit.
If you can find a replacement it may be worth it, but if it's the same age as yours you may be buying the same issue after a short amount of use.