VC Victa,
1. If the blade plate is on it is easy to check. Just grab the blade plate and check for movement from side to side. To much movement then the bearings and seals need to be replaced.
2. No the crankcase needs to be split.
3. They will fit any four stroke mower frame.
I would suggest that you replace the rings while you have it aparts in order to do a full recon.
