The condition of the fuel lines as well as fuel filter plugging and carburetor plugging are all part of the priming path--the fuel should be drawn from the tank through the filter, up to the carburetor, then out of the carburetor to the primer bulb, and from there back to the tank in another short line. Rubber fuel lines seem to decay at the ends causing air leaks. Make sure that you returned the fuel lines to the same connections on the new primer. Hope this helps!
Primers pull fuel from the carb and dumps it back into the tank, so if the bulb will not prime the chances are the fuel filter in the tank is blocked, pull the fuel hose through the filer hole and replace the filter on the end.
Replacement fuel lines can be found at your local chainsaw seller/mechanic. They are different diameters. 340 views
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