ASV RC-30 problem

[treedoclang]

Just this evening while getting ready for tomorrow, I lost the ability to drive forward to the right and backward to the left. I'm hoping someone knows where I might be able to start looking to find out what is going on. The machine only has 425 hours on it and it was owned by an older man who bought it new in 2003 to snowplow his driveway in the winter and some light soil work in the summer. Definitely not been ridden hard.

 

[AxeTree]

may be a dumb question but is the parking clyinder stuck up? it goes in to the "squrrel cage" drive sprocket when the machine is shut off if it were stuck up it would only allow your right track to move just an idea, i have a 2001 rc30 going on 975 hrs love it to death hope you figure out your problem

 

[treedoclang]

Thanks for the response. No, it wasn't the parking brake. I sheared the key on the drive shaft. The sprocket had been replaced by the previous owner and I don't think the dealer that performed the work used the loctite retaining compound on the shaft or used any loctite on the bolt that secures the sprocket. It became loose and caused enough slop to shear the key. New sprocket and key and I'm good to go.