I have a Craftsman YT4000 which has a Tuff Torq K46B Transmission Axle. I started noticing early this season that it would occasionally have trouble getting up hills. This would happen even while I was already moving fine up a relatively small incline (15-20 degrees, I would say). It is almost as if the gas isn't getting to the engine. It has gotten way worse now that it is colder, but has been getting worse for some time now over the season. The last 2 mowings (yesterday at 40F and then a week ago at 70F) were REAL slow going up hill. What I noticed was:
- I could start on the incline fine, then would lose speed until it was essentially not moving.
- While not moving I could bring the gas pedal back half way and it *may* move again
- While not moving I could sometimes only let off the gas then press the gas slowly again to get it moving. Either way it always would eventually move.