My drive wheels won't engage on my popular pro prrt900. Tiller tunes will engage and turn but wheels will not move. Wheels free wheel in any gear when engine is off.

SOURCE: drive wheels not ternning

Tillers have a handle that you "squeeze to go". The handle activates a clutch, usually through a flexible cable. Does that handle offer resistance about halfway up as you squeeze it?

If not, that cable may have stretched a bit. Try adjusting the clutch by turning the nuts on the threaded sleeve where the cable comes out near the handle, until you get resistance when you squeeze the handle. The cable could also be broken, in which case adjusting won't help, but replacing the cable isn't expensive.

There's something else to check. Tillers have a pin to lock the wheels to the axle. It's right at the wheel hub. The pin can be pulled out to make it easy to move the tiller without running the motor. If you can push the tiller around easily with the motor off, then you may just have a missing wheel pin.

If it's not these simple things, it could be something worse like a problem in the transmission. If reverse works, but not forward, then it's probably the transmission, which is bad news. I hope it's one of the simple problems above.

Please rate if this was helpful, thanks and good luck!.

SOURCE: My Poulan Pro Tiller starts

It may be the drive belt is slipping, depending on the model number of course. What is the model number?