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Restoration & Repair Tips Board

John Deere 420 problems

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Tommy T

09-04-2011 08:17:03

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I recently acquired a 420 that was well maintained and seemed to be in good running condition. I mowed all summer with it with no problems. It recently lost power and quit on me and wouldn"t turn over. Tuned it up, changed the oil and rebuilt the carb. Ran Ok for a while, but now is giving me problems when I engage the PTO or go up hill. It also seems to be spitting fuel out the carb into the air filter. The float is fine. Any Ideas?

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09-04-2011 14:01:42

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 Re: John Deere 420 problems in reply to Tommy T, 09-04-2011 08:17:03  
Are you sure you have the timing correctaAnd the advance is working properly? Did you set the floats in the carb and the mixture corectly?

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730d se

09-04-2011 08:30:43

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 Re: John Deere 420 problems in reply to Tommy T, 09-04-2011 08:17:03  
What kind of "trouble" is it giving when you engage the PTO or go up hill?
Makesure theair cleaner tubing is no particallyblocked.
When you say the carb is spitting fuel in to the "air filter", do you mean the oil cup?

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