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Re: fuel fails to reach carb and prevents starting
Clean the fuel sock on the pump and connect a pressure line or air compressor to the fuel lines to blow out the clogged lines if that don't work then clean the jets to the carborator
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No, check that the two fuel lines are not switched and fuel purge is working.
Easy way to test; Identify which line has the filter and disconnect the other (fuel return) at the carburetor. Then press purge bulb several times. Fuel should spurt out the fuel return port at the carb.
If no fuel spurt, move fuel line (with filter) to the other carb fuel port and repeat test. If still no fuel then purge is not working... either fuel not delivered from tank or carburetor is blocked or bad diaphragm or other.
The return line needs to inserted only about an inch into the tank as it is only returning fuel and not picking up fuel. Note some these return lines on other models have a line coupler on the end to prevent from coming back out.
Your Craftsman trimmer is made my Poulan/Weedeater and uses 2 different sized lines. The smaller diameter line is the fule supply line and runs from the pickup filter in the tank to the supply side of the carb. The supply side is usually the lower of the fuel nipples on the carb. Make sure to put enough line in the tank so the filter can drop to the lowest point of the tank while you are trimming. The larger diameter line is the return line, and will connect to the nipple on the carb that is closest to the primer bulb. From the factory, the return line went into the tank and had a small clear plasted connector on the end to prevent it from slipping back out of the tank. This fitting does not connect to anything in the tank, it is merely a return line. If the return line fitting is missing, just make sure to leave a couple of inches of line in the tank. If the filter is missing, you MUST replace it...it will save you from having to clean the carb out every 10 minutes of run time. Good luck!
mine problem was identical, the fuel filter has a return to tank on it and when it starts to get plugged it returns all the fuel to tank and not start, i crimped the return with vise grips and it started right up so i knew to replace the fule filter
The most probable problem is no fuel delivery to the engine.
1. Check/replace the fuel in-tank filter, you should be able to easily blow through it once removed. The primer bulb will sink down and not return quickly if the filter is bad. Fuel will not return to the tank via the return line if the fuel filter doesn't allow fuel to be pulled in.
2. If fuel is returning to the fuel tank when the primer is pushed then your problem is inside the carb.
3. To verify this put a small quantity of gas in the lid of a water bottle (half full). And pour it into the carb throat. Replace the air filter to prevent a backfire from shooting flames out. Try to start the weedwacker. If it runs and then dies the problem is inside the carb.
4. If you are really good at working on things with small parts you can clean out the carb and replace all of the gaskets to solve the problem. If this isn't for you then you should take it to a lawn shop and have them clean the carb and replace the gaskets.
NOTE: Replacing the gaskets is very important because the gaskets get stiff and the fuel pump action of one of the gaskets is reduced or stopped.
primer bulb on weedeater will not return to normal or **** gas into it. new primer bulb. lines to tank have been repalce and can blow through them but primer bulb will not push air into tank
Start from the tank(fuel filter) connect to the filter then to the top of the carb.Top of carb is where the H & L screws of carb is.Then from bottom of carb to primer bulp(**** side)then from primer(blow side)to tank return.
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