Question about McCulloch Garden
Fuel Primer Bulb
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: Primer bulb not filling
Yes, I think the gas cap may be clogged. The gas cap must be able to breath, otherwise this vacuum will occur. Try starting your trimmer and when it starts to choke out, loosen the gas cap. It should get air back in the tank, then and keep running. If this works, clear the hole in the gas cap, or purchase a new one.
Posted on May 25, 2009
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.
Posted on Jun 10, 2009
By "holds suction" this means that you can depress the primer bulb and it remains in the "pressed" position and/or does not reinflate (for lack of a better term)?
You need to determine if a blockage exists in either one of the fuel lines, or with the primer bulb itself.
First, drain your fuel tank. Do this into a clear mason jar or equivalent and inspect your fuel to see if it is full of debris since even very small pieces of grass, dust, dirt, etc... can cause problems. If so, then you need to flush your fuel tank and or lines.
Viewing the backside of the primer bulb, you can see several clear fuel tubing lines that lead from the primer to the carbureator and fuel tank..
Next, carefully remove these using a pair of needle nosed pliers (or by hand is at all possible) being very careful not to crush or tear the tubing.
With the clear tubing removed, if the primer bulb will press in and immediately reinflates back to it's relaxed position, then one or more of your lines are clogged by a small piece of debris. If the primer still does not relax, then it is blocked by a small piece of debris or needs to be replaced (pick one up at Lowes, etc...).
If you determine that your lines may be clogged, then I have had success clearing them with a can of WD-40 by sticking the red nozzle into the clear tubing (attempt to make a seal) and by pressing for a half-second or so. If you get flow, then let it rip for a second, then proceed to rinse your fuel tank again just for good measure (basically until you get nothing but clean gas...no debris).
Put it all back together and let it rip!
Posted on Jul 19, 2009
From the fuel tank to the carb, from the carb to the primer, from the primer back to the fuel tank. The bulb sucks fuel through the carb excess fuel is returned to the tank. HTH
Posted on Oct 08, 2009
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