john deere r pup motor

markz88 · Mar 24, 2010

hey guys i have a john deere r pup motor i can not get to run the situation is we bought the tractor needing a new crank shaft in the pup motor so i took the engine right apart installed new crank shaft in the pup motor put new rings on the pistons and re assembeled exactly like the shop manual said to had the timing marks lined up on both the crank shaft and cam shaft gears put it all together and when puttin the magneto on i can not get it to fire soon enough for it to run i can get it to fire but will not stay running i took the head off and the piston is about 1" to 1.5" down on compression stroke before the spark plug will fire i have the timing as far advanced as possible and ran out of ideas is there something simple i am missing?

El Toro · Mar 25, 2010

It sounds like the engine may not be in time. I would post this over on the JD forum since you will get more reponses about your problem. Hal
PS: Take a look at those timing gears to make sure they haven't sheared their woodruff keys.

john deere r pup motor

markz88

New User

El Toro

Well-known Member

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