Rebuild Magnum engine in 1862?
 

My magnum 18 engine in my Cub has a hole in the side of the engine I love the and miss the tractor, even more so after buying a Lowes JD to keep me mowing.

Early this year the motor started blowing oil, if found the govenor shaft was missing. I ordered a new one from the dealer, re installed and noticed the engine was no longer governed. I continued to mow using low throttle, with plans to tear into the engine this winter and fix the govenor. What I did not know is pieces of the govenor were in the bottom of the engine, one eventually got between the crank case and the crank and blew a hole in the engine case. Engine still runs, no knocking. I found a guy that can repair the case, however all threads about rebuilding this engine seem to come to a dead end or have dead links.

Can someone please direct me to a thread of a rebuild of this engine?

Or a site where I can get the parts to rebuild?

I found a dead link with the governor problems these engines are known for, any one have more info on that?

Tractor has only 700 hrs. I have no interest in retro fitting a newer style engine, I want to rebuild what I have.

Really miss the power steering, and the amazing cut of this tractor

I believe there is a service manual available that shows you the things you need to do. But i do remember reading a few threads about the M18 rebuilds.

The Service Manual you can print out:
http://www.asberry.net/files/TP-2204-B.pdf

Governor pinning

Have Welder pay attention to negate case warpage while tig welding. BTDT.
You just missed a complete engine on Evilpay go for $.99 with a bad rod but good case in Pennsylvania.

Thank you, very helpful!

Thanks! This was the cause of the problem to begin with

This guy welds cases for dirt bikes and snowmobiles, pretty well known in the area. Hoping he knows what he is doing, worth a shot for $50

Wow, I have been searching for months but I guess I missed that one. Finding a horizontal engine in general is hard enough.