Question about Ryobi 30 Cubic Centimeter Gas Brush Cutter

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Adjustment of the gas air mixture on a Ryobi ss30 weed eater

The weed eater will only run at normal high speed when you have the choke on 1/2 or more, it is starved for gas. I took off the carburator, removed the lower diaphragm, the pump appears to be working fine. There is only 1 screw under the diaphragm and it appears to be tight and not adjustable. there are two plastic adjustment on the front of the carburator but adjusting while the unit was running did nothing. Any help on the location of the lean mixture screw??

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The exhaust screen and filter are not the problem so don`t waste you time and money.
it sounds like a blown seal, or gasket, remove all of the plastic from the engine and look for black soot or gas & oil coming out from one of them.
also make sure that all screws are tight especially on the head.
make sure you also check the seal on the front and back of the crank shaft.

Posted on Nov 18, 2009

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Aside from carb adfustment. remove exhaust screen and scrape off carbon with piece of wood. also repplace the fuel pickup filter in the tank. couple buck at the home depot.

Posted on Jun 19, 2009

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