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1811 with Seized Kohler M18 Engine

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cstewart

Active member
Joined
Mar 20, 2007
Messages
30
displayname
Chip Stewart
Last fall, I had some fuel in the crankcase of my 1811. I thought I'd drain and replace the oil and rebuild the carb. I drained the oil and thought I'd run it for a few seconds to blast any residual oil out - which was a very, very bad idea. It seized up immediately.

I took it to a local shop, who confirmed that it was seized (duh!) but said it wasn't worth working on and they would charge $600 or so to rebuild the engine.

Right now I'm using a Troy-Bilt Pony somebody gave me and I hate it - I'm surprised the engine isn't made of plastic!

I really miss my 1811 and need to get it going again. Anybody know anyone, preferably within 100 or so miles of NW Virginia, who can repair it? If not within 100 miles, I suppose I could ship the motor.

Did I say I really miss my CC?
 

1811Cub

Well-known member
Joined
Jul 13, 2020
Messages
507
Location
Elkland, PA
It will be more cost effective, yet riskier, to locate a good running used M18 or M20 than rebuild your existing engine. Kohler parts are not exactly cheap, and good small engine builders demand a premium. Another suggestion is to repower with a later Kohler Command 18-23, but it will not be an exact drop in for your Magnum. Try this boards sponsors first. If you can't locate one, there is a nice gentleman in Randolph, NY that had a couple of M18's freshly pulled about 6 weeks ago when I bought my 782D from him.
 

eweiss

Well-known member
Joined
Apr 27, 2015
Messages
98
displayname
Emmett Weiss
After adding enough oil to fill the case to lube the rod. you can trying to pry the flywheel a little back and forth to free it up. If it moves keep trying until a full revaluation or more
 

tkhoffman

Well-known member
Joined
Oct 2, 2013
Messages
395
Location
Northern NEW YORK
displayname
Tony Hoffman
Wondering if it was truly seized or just hydro locked from gas in the cylinders. Gas had to get into the cylinders to run down the Rings into the crankcase. You might have been able to take out the plugs, crank it, put the plug in and been off and running
 

Gabe

Member
Joined
Mar 9, 2021
Messages
7
Location
Kalona Iowa
Well... I just spent dern near $1500 rebuilding my M18. It's a royal pain. I will drop a note for you. I blew up my previous engine Briggs&ScrapIron 18hp, got too hot, sludged up the oil. Any engine you put in, make darn sure the airflow is correct.
 

mgwin

Well-known member
Joined
Sep 3, 2009
Messages
2,740
Location
Reidsville, NC
displayname
Marty A. Gwin
I seized up my chainsaw a couple of years ago.
Took the plug out, and sprayed PB blaster in it. Let it set for about 30 minutes. Started wiggling the crank back and forth, and it popped loose.
It is still running.
Worth a try! :bluethumbsup:
 
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