Antique Tractor National Mower 1962 30” rider reel mower 400 series

My family has had this rider mower since the early 1960s. It is a reel type mower, the type that is used for baseball diamonds and golf courses. Some have 3 or 4 sets of reels, on the sides, front and rear. This machine has 1 cutter set, mounted under mower, 30” cut sized for our 1 acre lawn in the 60s. The Ariens Co bought out the National Mower Company. I have the parts list, instructions and diagrams for this model. I replaced the engine with an 8 hp Tecumseh engine. We have taken great care of this machine for 46 years and can use it at any time, and we do. I have removed this engine for use on another machine, so, there is no engine on this antique.