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Stationary Engines Discussion Forum

Mccormick deering engine -- need newbie info

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Bryan

07-30-2003 20:57:58




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I just purchased a Mccormick Deering 3 hp s/n W 149381 engine. I'm new to these old engines and I would like to get a little information about this one. It runs great on the starting fuel tank, but it seems to be running the fuel into the crankcase. The little gas tank on the mixer drains quickly and it floods out. How do I fix this problem? Also, is this a "hit & miss" engine? It seems to run pretty fast. Thank you. Bryan in KS

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Jeremy Williams

09-09-2003 16:52:34




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 Re: Mccormick deering engine -- need newbie info in reply to Bryan, 07-30-2003 20:57:58  
Hello, sounds to me like mixer might be leaking fuel in around the bottom, or the needle valve is opened too far. The correct setting for the needle valve is 1/4 turn open. If the carb has two or three needle valves make sure that the other two are closed completely.



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John McPherson

07-31-2003 11:00:43




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 Re: Mccormick deering engine -- need newbie info in reply to Bryan, 07-30-2003 20:57:58  
A "Hit N Miss" engine uses a governor system that opens and holds open the exhaust valve to maintain the desired engine speed. These engines are capable of running quite fast.

If the governor controls position of a throttle plate in the carb, it is not a "Hit N Miss".

I am not sure which carb type that you have, but what appears to be a fuel "shutoff", is actually the manner of fuel supply regulation. Turn it all the way in, and then just crack it open. The amount of fuel provided to the engine will limit speed as effectively as a throttle plate.

This could be the reason for you finding gas in the crankcase, it seeps past the rings, or gets forced past them if too much gets into the cylinder.

Go here to find a good listing of links to sites grouped by manufacturer.
http://www.oldengine.org/members/harrold/index.htm#Make

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