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John Deere 140 Lawn tractor 022666M Serial #

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Brock

06-16-2004 10:47:17

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I just purchased this lawn tractor and was thinking of restoring it. It runs great until it warms up (which is after cuts two rows of grass) then it loses power and starts to miss. I changed the coil and condenser and that didn't work...Any other ideas would be appreciated. Also where would I find out the year of this tractor? Serial 022666M

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Bob D.

06-24-2004 09:53:11

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Re: John Deere 140 Lawn tractor 022666M Serial # in reply to Brock, 06-16-2004 10:47:17

Had the same problem with mine. Apparently the previous owner had it too, cause when it blew the spark plug out of the head it took the helicoil with it. Turned out to be a mouse nest filling the shroud on the back of the engine resulting in no air flow.

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Wayne

06-17-2004 06:54:39

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Re: John Deere 140 Lawn tractor 022666M Serial # in reply to Brock, 06-16-2004 10:47:17

Your 140 is a 1970 model.
1970 started with S/N 022401.

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Rick

06-16-2004 10:55:49

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Re: John Deere 140 Lawn tractor 022666M Serial # in reply to Brock, 06-16-2004 10:47:17

Could be a fuel problem i.e. plugged fuel cap vent or dirty carb. Could also be a valve adjustment. As the engine heats up and the metal expands you may not have enough clearance. I'm guessing that if you went to the trouble of changing the condenser and coil that you aslo installed a new plug.

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ken

06-16-2004 13:29:48

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Re: Re: John Deere 140 Lawn tractor 022666M Serial in reply to Rick, 06-16-2004 10:55:49

by the serial number i'd say 69 my 70 is serial 27898,22400 is shown as last 69

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KennyW

06-16-2004 11:01:46

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Re: Re: John Deere 140 Lawn tractor 022666M Serial in reply to Rick, 06-16-2004 10:55:49

Sounds like a sticking exhaust valve. I'd pull the head and make sure the gasket it isn't blown or getting there in the area of the exhaust valve. These engines (K321) are notorious for burning exhaust valves. Put some mystery oil in the gas and see if it helps free the valve up. Kenny

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