If your engine starts, sounds great for a few seconds and then quits, or runs on half choke, then you probably have cracked Fuel Lines. They can become brittle over time and will need to be replaced. The Fuel Lines may look fine around the carburetor, but make sure that you look inside the fuel tank as well. This is where they are more prone to break. The fuel tank should be empty, so as to do a more thorough inspection of the Fuel Lines.
Another reason why it may only run on half choke is because the Fuel Lines don't fit properly into the holes of the fuel tank. If there is a small leak around one, or both of them, the machine will not run properly.
One Fuel Line Instillation: (This usually only applies to Leaf Blowers.) This is not hard to figure out. Fuel Line goes from carburetor to fuel tank.
Two Fuel Line Instillation: In this installation, the primer bulb is attached to the carburetor.
The longest, and sometimes smaller in diameter of the two Fuel Lines, goes from the bottom of the carburetor, to the bottom of the tank. (The first line will need to be longer so that you can pull it all the way through to where you put gas in.) This so that you can easily attach the fuel filter.
Then pull the
Fuel Line back through the hole.
Leave enough slack in this line so that the filter that attaches to the end will rest comfortably at the bottom of the tank. Cut off any excess line once you know that you have enough to reach the carburetor.
The other Fuel Line goes from the primer bulb to just inside the tank,(about a 1/2 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 Fuel Lines through the fuel 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.
Three Fuel Line Installation: In this installation, the primer bulb is separate from the Carburetor.
The
(1st) Fuel Line will be the longest, and sometimes smaller in diameter of the (3) Fuel Lines. It goes from the bottom of the carburetor, to the bottom of the tank. (The first line will need to be longer so that you can pull it all the way through to where you put gas in.) This so that you can easily attach the fuel filter.
Then pull the
Fuel Line back through the hole.
Leave enough slack in this line so that the filter that attaches to the end will rest comfortably at the bottom of the tank. Cut off any excess line once you know that you have enough to reach the carburetor.
The
(2nd) Fuel Line goes from the top stem of the primer bulb to just inside the tank,(about a 1/2 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. This will be the shortest of the three Fuel Lines.
The (3rd) Fuel Line goes from the bottom stem of the primer bulb to the top of carburetor.
However, if the Fuel Lines are in good shape, and the primer bulb doesn't have any cracks, then you will need to do a thorough carburetor cleaning. In this case, click on this link: ( www.fixya.com/support/r6081405-cleaning_small_engie_carburetor )
Good Luck!
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Key Words: Weed Eater, Trimmer, Chainsaw, Leaf Blower, Snow Bower, Pressure Washer, & Varnisized
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