Posted by old on November 02, 2012 at 17:13:23 from (184.108.40.206):
In Reply to: 640 carb kit posted by gargriff49 on November 02, 2012 at 16:55:20:
I can not say how good or bad the kits this site has are on that carb. My self I use the Walker brand kits O'Reilly's sells and have had good luck. As for can they be rebuilt well most of them can be I have done so many I can not tell you how many. Things you might try before opening it up is theses things. #1 pull the carb drain plug and let to gas flow for a few minutes/ Catch the gas to look for rust/dirt/water. #2with the drain plug out pull the main jet adjustment needle all the way out and take a can of spray carb clean with the red tube pushed down in to the adjustment needle hole and spray the heck out of it. #3 with the air cleaner tube off and the engine running half throttle put you hand over the air intake and pull it back off fast so as not to kill the engine but by doing this it can/will clean out a minor clog
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