2007 800R won't go in reverse

[Fairviewrider]

Hi I have an 07 800R that would start fine and the reverse worked fine. I put it in the trailer hauled it to the mountain. When I got there it started fine. Rode about 2 miles up a trailer stopped to look at elk and it wouldn't start. I pulled forever finally it started but the reverse doesn't work. It idles fine and runs fine when driving. Just won't start or go in rewind. Anyone else ever have this problem?

 

[sledsrock]

Those are indications of low compression. What elevation was this happening at?

 

[NEWDUCK]

Does the sled have e start? A dead/ missing battery will give you the same problems.

 

[goofy]

button. had the same thing on my 05 rev. actually took the left controller apart cleaned it and put it back together and it worked? have not had any problem since.