Posted by JDseller on May 22, 2012 at 23:21:31 from (208.126.196.144):
In Reply to: 4020 posted by Kyle Hammertime on May 22, 2012 at 17:46:10:
IF your JD 4020 has a Roosa Master injection pump then it is harder to turn up. You have to remove the governor spring shaft and then line the retain clip screw up with the hole in the pump head. Then you can only turn it up IF the pump has been apart and the service people took the factory shims out of it. The factory pumps had the retaining clip screw set to the correct fuel delivery and then shims installed under it so it could not be turned up externally.
I would not turn it up much or you will cause trouble else where. Switch to a higher horse power tractor rather than tear up your JD 4020.
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Today's Featured Article - Tuning-Up Your Tractor: Oil, Oil Filter and Air Breather - by Curtis Von Fange. In the preceding articles we discussed some of the various aspects of doing a comprehensive tune up. Hopefully some light was shed on why we do or don't do certain things pertaining to inspections and order of events when doing a tune up. Perhaps some useful reasons were given for why parts fail and what to do about preventing part failure in the future. All these tips will help us think and reason out a problem in order to make our tune up last and, hopefully, keep us from spending extra mone
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