Question about Homelite Consumer Products 9.0 Amp, 14 In. Chainsaw
You should have taken advantage of the warranty when you first noticed the problem. Go to: http://www.drystacked.com for an excellent 12 page article on Walbro carburetors--theory and troubleshooting. Note carefully, the caution about the lower chamber gasket and diaphragm positions. Hot running engines imply very lean fuel conditions. Hopefully, you haven't damaged the inner cylinder liner/piston/rings due to excess heat and lack of lubrication. At 50:1 fuel ratio, there isn't much lubrication to spare. Make sure the carburetor fasteners are tight and no plugging of the fuel filter. The head and cylinder are one casting--no head gasket. Try turning both jet screws CW to the stops (lightly), then back out each CCW 1-1/2 turns. This is a basic setting and the engine should start and run. Allow to warm up, then pull the throttle full on--adjust H needle CW until the engine speeds up, but continues to 4-stroke. Proper adjustment is when the engine 4-strokes, but immediately 2-strokes when cutting. This produces the most power and least heat. Allow to idle and adjust L CW until the engine runs fairly well, but allows the engine to 'follow the throttle'. Adjust the idle speed screw to stop the chain from turning, but keeps the engine running. Hope this helps!
Posted on May 11, 2010
Testimonial: "Thanks for the instructions for adjusting the carburetor and the reference. The saw runs great as long as it stays relatively cool. Once it heats up it no longer idols. Wondering if it has anything to do the the etholonol that is used in our gasoline in this state. It acts like it evaporates before it gets into the cyl. for firing. "
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Posted on Jan 02, 2017
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Either that season's gas dried in the carburetor affecting it's operation or you are drawing air through a fuel seal somewhere. Both are common with this model. Sometimes will start from cold and run up to half speed until you take the choke off. Then it just dies from not drawing gas. Status proved if it revs up if sprayed with short blip of ether from 7" away at the moment it dies. Do not try to keep it running on ether more than a minute. Like pure gas, it'll burn up the engine or worst. Do not use ether if the air is not moving. Ether may collect and explode.
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