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I'm looking to replace my Kohler M18 on my Gravely G18 with a Briggs engine off of my Gravely 816S and was wondering if it is a direct replacement. I also have the adapter plate with the Briggs engine since it I have the entire tractor. MM18 blew a rod and it since time is of the essence I thought just pulling the Briggs off of my 816S would be easier and quicker. Thanks for any advice.

Jimbaratto said:

I'm looking to replace my Kohler M18 on my Gravely G18 with a Briggs engine off of my Gravely 816S and was wondering if it is a direct replacement. I also have the adapter plate with the Briggs engine since it I have the entire tractor. MM18 blew a rod and it since time is of the essence I thought just pulling the Briggs off of my 816S would be easier and quicker. Thanks for any advice.

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Keywords ----Kohler to Briggs

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A number of threads about it, here is one

http://www.lawnmowerforum.com/showt...r-to-Briggs-swap?highlight=swap+Kohler+Briggs

Thanks for the help. I'm trying to help out my Dad who is 89 years. He is NJ and I live in NC, but I'm going to have to take a trip up to help him out. He just bought 2 G models with one of them having the blown M18 Magnum. He's been dealing with buying, rebuilding and reselling 2 and 4 wheel Gravelys since I've been in elementary school and I'm 67!! Appreciate it, John

The long & short of it.
Residential mowers run 1" diameter shafts 3 & 5/32" long
Commercial mowers run 1 & 1/8" diameter shafts

So almost any residential engine is swappable with any other residential engine.
However the electricial plugs and the control wires will not be a direct plug in.

To further complicate thins a lot of magnums ran the Kohler SAM ignition module which will require external ( battery ) power to work.

I regularly repower old mowers with whatever engines I have on hand so do the Kohler to B & S swap a lot.
Kohler to B &S is a lot easier than B & S to Kohler due to differences in the wiring.