Question about Poulan 25cc 2-Cycle Gas Powered String Trimmer with Curved Shaft #P1500

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Weed eater will not run in high speed but will idle

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Remove the air filter and look at the carburetor. There are 3 adjustment screws. The Philips-head screw adjusts the angle of the throttle lever and thus, the throttle speed at idle. Leave it alone. There are 2 adjusting screws side by side at the bottom side of the carburetor (air filter side). One is the L (Low speed mixture) screw and the one to the right of it is the H (High speed mixture screw). Try to get ahold of the L (it may have an unconventional head) with say an automotive type plastic sheathed wiring connector. A small one that fits 22 gauge wire orr 20 gauge may work. The screw head is only at most about 1/8" in diameter. Tap the wire connector down lightly onto the head of the L screw ( I suggest using one with a ring terminal on the end so you can grab it). Once you have the wire connector securely on the head of the screw, then turn the screw about 1/4 of a turn counterclockwise. This adjusts the L mixuture and also changes the mixture in the carb on the H side because when you run wide open, both the L and the H sides of the carb are contributing a fuel mixture to the main nozzle of the carb. Try that. For you learning pleasure please see this:

Posted on Apr 03, 2011


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