Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

I got a 726 john deer 7 hp  and it ran good .the other day it started a very high rpm . my question is can I get a replacement motor and what kind all the ones I see look so different but I like the steel construction of this jd  and it has 6 forward geers 4 pronged inpeller and has 1 reverce gear but its is built good . looking at the new ones they look very cheeply built the augers look so week and thats why I am looking for a newer 7or 8 hp motor any suggestions and how do I know if will fit ?( thanks in advance)