Hi All,
Recently purchased a Tractor 11.
Took it for a mow for the first time last weekend and whenever I hit a high spot or a rock (yes I know they should be avoided) the cutting deck belt comes off, flips and get's all tangled.
It doesn't feel overly loose, although when engaged it does slip a little bit on the deck pulley.
Is there an adjuster to tighten it? Also I feel that maybe it would benefit from a belt guide at the front of the deck pulley, not sure?
Cheers guys
Dave
Here's the old girl -> 
https://www.dropbox.com/s/2frq7xlbv4dz4r4/IMG_0226.PNG?dl=0