Hi again Rolla, that is a great collection of Rover/Scott Bonnars mate, and to have another machine for parts is a fabulous bonus. The second Rover from the left appears to have the 8 blade cylinder reel and should do a great job on your lawn. If so, that would make it a 20" cut. Good score there!
Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member. Kindest Regards, Darryl