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krp44994 · 06-23-2009

Hey thanks for all the responses...did not get to work on 4 wheeler tonight but here are some answers to some of the questions:

Did not buy a rebuild kit because owner told me that he just paid "~$350 for a complete rebuild".....I did tear the entire carb down and soak all metallic parts in Sea Foam over night, then blew everything out with compressed air (main jet, pilot jet, choke, etc....inspected every port, hole, orifice with a lupe (powerful magnifying glass for those that may not know) Everything was clear. Replace the O-ring on the main jet as it came apart when I removed with a dental pick (so much for "complete" rebuild - it looked dry-rotted) The pilot screw does have a needle like point on it and - yes - it WAS out 7 1/2 turns. I am going to tear down intake manifold tomorrow.....looking for leaks.....and also check fuel level in bowl.....and buy 14 mm x 12 mm reducer for compression tester if I can find one!......this should rule out a few things...and yes there are two small holes in the head cooling fin area just to right of exhaust manifold - weird?! Also - I do have the air filter installed and the cover on it.....if I plug one side of intake filter cover (two slots at back of cover) with a rag, it runs a little better (IE - richer - again it is running lean - this I know - just do NOT know why!?!?)

06-23-2009	#14 (permalink)
krp44994 Newbie Join Date: Jun 2009 Posts: 10	220 Carb problems cont. Hey thanks for all the responses...did not get to work on 4 wheeler tonight but here are some answers to some of the questions: Did not buy a rebuild kit because owner told me that he just paid "~$350 for a complete rebuild".....I did tear the entire carb down and soak all metallic parts in Sea Foam over night, then blew everything out with compressed air (main jet, pilot jet, choke, etc....inspected every port, hole, orifice with a lupe (powerful magnifying glass for those that may not know) Everything was clear. Replace the O-ring on the main jet as it came apart when I removed with a dental pick (so much for "complete" rebuild - it looked dry-rotted) The pilot screw does have a needle like point on it and - yes - it WAS out 7 1/2 turns. I am going to tear down intake manifold tomorrow.....looking for leaks.....and also check fuel level in bowl.....and buy 14 mm x 12 mm reducer for compression tester if I can find one!......this should rule out a few things...and yes there are two small holes in the head cooling fin area just to right of exhaust manifold - weird?! Also - I do have the air filter installed and the cover on it.....if I plug one side of intake filter cover (two slots at back of cover) with a rag, it runs a little better (IE - richer - again it is running lean - this I know - just do NOT know why!?!?)