IS 5100Z Rear wheel adjustment

[Pete6114]

Rear wheels definitely need adjusting and are tipping in at a whopping 35mm at the top, way more than the manual recommends in installing maximum number of extra shims for as per this chart. Has anybody dealt with this before or has a fix?

 

[Padroo]

I recall reading somewhere on the internet that Ferris had some bad axles but I can't recall what models had the problem. Mine has a solid axle that runs under the rear of the mower from wheel to wheel. Sorry I can't help more. I would call your dealer and ask.
I once had a TORO that would not start and it turned out to be a rollover switch that was recalled. Good Luck.