Provide your lines are correctly plumb then check the carburetor internal filter screen. If it is clogged the primer will not work. On some of the Walbros and Zamas they use an extra tight filter screen that clogs very easily when you have bad fuel lines. These extra tight filter screens can not be cleaned; only replaced.
Here is a basic line plumbing diagram just for reference. If you carburetor has the primer built-in just the primer in the diagram as a line.
SOURCE: 323L Husqvarna trimmer
This sounds like the carb needs to be adjusted like it is letting to much fuel into the cylinder. There is supposed to be fuel and air mixture in the cylinder to make it fire. If there is to much fuel what will happen is that it will just build up in there and the air wont get hot enough as it compresses to start the engine.
SOURCE: primer bulb won't prime
it sounds like the filter on the fule line is cloged try to remove the filter and then try to prime the trimmer. it it does you need to replace the filter. just about any filter that will fit will do.
SOURCE: primer bulb doesn't pump gas
Does the primer bulb pop back out or does it come out slowly? Is the inline hose in good shape or has a crack where it can **** air in? Did you check to see if the diaphgram in the carb is pliable or is it paper-like and needs replaced. Or your carb could be stopped up.
Only one problem..I can't think of any weedtrimmer that has an inline fuel filter. They are usually located in the gas tank.
SOURCE: the primer bulb does not draw fuel thru carb
you need to buy a primer bulb kit and replace it cost about $8.00 and is easy to put in, the check valve is damaged.
SOURCE: not getting fuel replaced primer and hoses and not
It's easy to mess this up as I've done it in the past. If the unit has an external purge bulb, the fuel line from the fuel tank that has the fuel filter on it goes directly to the carburetor...near the part of the carb that holds the fuel pump and has the grooved cover (where an inbuilt purge bulb would be). The other line coming out of the fuel tank goes to the purge bulb. The side of the carburetor that has the diaphragm and metering lever cover has the line going to the purge bulb. Remember, this is not really a primer...the purge bulb pulls air and old fuel out of the carb and when it does this, fresh fuel flows into it...and then the bulb pushes that air and old fuel back into the fuel tank. Hope this helps.
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