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John Deere b

T

Tractorbud

New User
Heaving problem getting John Deere b started. Had magneto and carb rebuild on it and can't get it to fire. Magneto has spark. Played with position of magneto and nothing happened. When pulled spark plugs they were soaking wet if gas. Not sure what is wrong. Any help would be great.
 
you've flooded the cylinders with gas. you will need new plugs and then determine if your carb rebuild is leaking gas past the needle and seat, or perhaps a bad float with a hole in it, or did you use too much choke?
 
each of the old 2 cylinders seems to have it's own "sweat" way to start. On my 1938 unstyled G I put the choke on full, roll it over a couple times and it will pop. Occaionally I have gotten luck and moved choke to 1/2 quick enough and it will keep running. If not I roll it over with 1/2 choke and it will start that way. I set throttle at 1/2. It does sound like you have flooded the B. I have had some luck removing plugs and blowing them off until dry then reusing them. Do you have petcocks? if there is fuel coming out the petcocks as the engine is turned over you have too much fuel in the cylinder. You will need to get excess fuel out either by turnind it over with plugs out(unhook plug wires at mag) or letting it dry out with time.
 
Are you getting the spark at the correct time? Pull the no. 1 plug and turn the engine over and make sure the plug fires when the timing mark on the flywheel lines up with the mark on the side of the tractor. Sounds like you've got fuel.
 
Lots of "professionals" screw up &/or otherwise do substandard work on magnetos & especially carbs. That being said, if you've got the mag 1/2 turn off simply swap plug wires to opposite terminals on the cap. Use new plugs & if still no firing or at least a backfire then dig deeper.
 

Yes, SHUT the gas OFF, pull the soaked plugs out and crank it to dry the cylinders...
Verify that your Timing is correct.
Install NEW Plugs and DO try NOT to flood it again..

Ron.
 
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