Change the fuel lines over on the carby
you are trying to feed fuel through the primer line when the engine is running and that is why it is cutting out
SOURCE: need diagram on fuel lines on a 26 cc craftsman weed eater
The longest, and sometimes smaller in diameter of the two fuel lines, goes from
the carburetor to the bottom of the tank. Leave enough slack in this
line so that the filter that attaches to the end will rest comfortably at the bottom of the tank.
The
other
fuel line goes from the primer bulb to just inside the tank,
(about an inch). make sure that you get the right size fuel lines. The
plastic coupling goes on the end of this line, inside the tank. This
keeps the line from pulling out of the tank.
(HINT): When feeding the lines through the tank holes, cut the lines at an
angle. They will feed much easier into the holes. You can than cut them
off square, once you know that you have enough to work with.
If you need further assistance, just let me know.
Jim
SOURCE: My Craftsman 17cc gas weed trimmer wouldn't start.
Hi There, Check the primer bulb for tare or pin holes. Replace it. Check and clean carb jet it maybe plugged with debree. Also check for spark which you didn't say. Replace with correct plug.
Note; Do not use strong cleaners on rubber seals (O rings and gaskets) They dry up and crack.
If needed use a dabble of grease on seals
Testimonial: "Thank you. I had to merely add more gas to tank & bulb siphoned fine. Changed the plug and bingo! It started & runs great. "
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