Hello brutus.
I have moved this topic to Wanted.

A 7210 will be a 4hp ride-on (not 5hp).
[Model 72 chassis with B&S 10 Series].

This is the second model Colt (after the 7110).
WE can help with a parts list for the similar Model 73.
https://www.outdoorking-forum.com.au/forum/ubbthreads.php/topics/7306/Rover_Ride_On_Information.html

Hope this helps.
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Jack