Posted: 4/10/2007 11:45:19 AM EDT
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Anyone know much about weedeaters? I found a 31cc Poulan Pro in the dump, and it looked like it never had been used. The pull rope had broken, so I guess that's the reason it was tossed. I fixed the rope, and also had to replace one of the fuel lines. I got all of that done, and the engine works fine....on half-choke. It runs very well on half-choke, but won't run with the choke off. Actually, it will run momentarily, but it acts like its not getting enough fuel to run wide open and bogs down. Any ideas? I've cleaned the carb and checked the fuel lines, so I am running out of ideas. |
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There are two mixture adjustment screws, one for idle (not to be confused with throttle plate adjustment) and the other for high speed. Some will have these capped or otherwise limited in adjustment because of EPA requirements. It sounds like the high speed jet is clogged. Remove the stupid limit cap and screw it down all the way. Remember how many turns to seat it, then back it out the same number of turns, usually it is 2 but could be more or less. Also check the fuel tank clunk. It is a filter of sorts and they "gunk up" often, limiting fuel flow and consequently, power. |
You should be able to pull the clunk out of the tank. Backflush it with a squirt of carb cleaner. The gunk that is plugging the high speed jet can be some hard stuff to break. You need to defeat the mixture screw mechanism. It isn't impossible. |