My ztr Z Force 54 inch mower will start and pto works fine, But it will not go forward or back?

SOURCE: I have a craftman model 917.270680 that wont move

Just because it came off doesn't necessarily mean you need a new, one unless it looks bad. A stick or Sweetgum ball could have flipped it off. Try just putting it back on and see how it does. Easier than dropping the deck and replacing it.

SOURCE: Cub cadet Z Force 48 inch zero turn blades won't engage

I hope this will help you...under the side panels on each side of the mower, there are "reverse lockout safety switches", they are supposed to stop the blades when both handles are pulled back. If one or both of the switches are out, the deck will not engage. Also, under the right side panel (when sitting on seat) there should be 3 relay switches, the one closest to the motor controls the PTO., if this is out, the PTO will not engage.

SOURCE: I have a scotts (made

sounds like safety switch

SOURCE: Dixon ztr 311 The left lever will not make the

The motion drive design is similar to a set of spider gears, except it uses friction material rather than bevel gears in the cluster. The friction material may be worn down to the point that it no longer engages and needs replacement. This is a likely scenario for the symptoms you describe.

The replacement procedure is a rather involved process. If you feel confident and are VERY handy, reply to this post and I'll be happy to go into detail.
Hope this helps!

Testimonial: "Thanks, lots of help. Details would be great"

SOURCE: Eletric PTO is not working

The PTO draws a pretty good current, so a weak or loose contact in the switch, or in the connections on the back of the switch, could cause this overheating. But it could also happen if the PTO clutch itself or the wiring to it has a short. If the mower's still under warranty, get the dealer to diagnose and fix it. If not, then I'd measure the resistance of the PTO clutch - should be about 2 ohms - and make sure the wiring to it isn't shorted. If all that is OK, then just replace the PTO switch and any melted connectors and wiring. Good luck!