Question about Garden
How is the compression on the saw? I see 2 possibilities 1 bad reed valves, or 2 a scored piston and cylinder. To check the reed valves, take the air filter off, and pull the starter rope, listen to see if air is blowing back out of the carb if it is the reed valve is broken or has something lodged in it. As far as the piston and cylinder, you can pull the muffler off and look in thru the exhaust port, what you see should be shiny and slick, if there are any vertical lines in the cylinder, or on the piston it is time for a new top end.
Posted on Mar 31, 2014
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Posted on Jan 02, 2017
SOURCE: poulan 2000 starts but wont
Two common things are a clogged filter which is usually on the end of the "fuel finder" hose within the fuel tank snd the other common problem is failure of the fuel pump and or check valves. The latter is in the carb and consists of a small diaphram that is driven by vacuum pulses picked off a port in the carb. The check valves of the pump are jsut little flaps. The fuel pump problem is most likely if you have always used clean gas. The fuel pump diaphram seem to be good for about 2 years then it is carb rebuild time. It takes less than an hour to rebuild with new kit. Try not to disturb adjustments and idling screws.
Posted on Oct 22, 2010
Find the gas/air adjustment screws on the carb (next to the the throttle cam where the throttle cable attaches. Turn the screws in all the way... GENTLY... Those are needle valves, and too much torque on them will damage the needle valve seats. turn both of them out one and a quarter to one and a half turns. Start the saw, and adjust one or the other screw in or out until the saw runs properly. If there is a plastic stop installed on the screws, remove it first, and replace it after the saw is running properly. You have to be patient while tuning the carb as it may take a while. If you adjust too much and the saw refuses to start at all, start over with the 1-1/4 to 1-1/2 turns out on the screws.
Posted on Aug 19, 2012
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