+ AU 0.60 postage + AU 0.60 postage + AU 0.60 postage. 5PCS Homelite Echo Stihl Ryobi Poulan Zama Primer Gas Fuel Bulb Pump D3B4 L2I4. I think the check valve in the main nozzle is stuck open. Universal Primer Bulb for whipper snipper suits most Ryobi, McCulloch, Stihl. You could pressure test the carb with some compressed air too if you wanted. All I can tell you is take apart the NEW carb and make sure all the parts inside are there and the gaskets are sealing it up. The primer/purge bulb will NOT function correctly. If that valve is leaking as I have stated befor the symptoms will be identical to what you are experiencing. The Echo ran great! If this method worked on an old Zama, it couldn't hurt on yours (if you care to try it).Ī picture of your carb seems to show a brass main nozzle. Push bulb, spray.let sit.Over and over I did this UNTIL, the primer/purge bulb started picking up the fuel and pushing it back out. STENS 615-740 PRIMER BULB for Stihl Not compatible with greater than 10 ethanol fuel ID:0. If playback doesnt begin shortly, try restarting your device. I let the carb absorb the mix and let it sit. I had fuel supply line and fuel return lines connected and liberally sprayed inside them. I did not install a rebuild or gasket and diaphragm kit on this one. On that carb, when you pressed on the bulb, it became hard as a rock and like yours no fuel entered the carb.

I used a combination of carburetor/choke cleaner, WD-40 and Liquid Wrench. The last one I did was an OLDER Zama Rotary carb on an Echo Power Edger. I tried a hodge podge elixir of different fluids in the past to clean and/or remedy stuck check valves.

Prmer bulb stihl check