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Trying to replace the primer bulb...its split and allow prime to the carb..

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Remove the 2 srews and pull it off put the new one on

Posted on Oct 01, 2009

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1 Answer

Gas leaks out of carb or primer bulb


Is it leaking out of the carb or the primer bulb.


Could be a split fuel line, split primer bulb, or a sticky needle valve in the carb

May 21, 2016 | Garden

2 Answers

Primer bulb not pumping fuel into carb, pull it out, no splits etc. Once I get fuel in it starts and runs fine??


Probably a valve in the priming system is stuck. It allows fuel to flow into the bulb from the tank, the valve should close then and allow the bulb pressure to spray into the carburetor. Could also be the opening into the carburetor from the prime bulb is blocked.

Mar 27, 2015 | Garden

1 Answer

Wont prime up


I have seen a couple of different things cause this... Are the fuel lines hooked up and not split and fuel filter routed right in tank.(hanging freely touching bottom of tank lying flat) next if your carb has adj. screws H &L I have seen when the H is cranked snug (lean) that primer won't work right. Last but not least your Needle inlet valve is stuck shut and or the fuel pump diaphram little tabs are not sealing off chambers in carb on fuel pump side. make sure your fuel lines are properly hooked up to the right spots. when you push primer bulb it should squirt gas into the fuel tank, then when you release it ,it should draw fuel from the tank through the filter and thru the carb and then out to tank.

Nov 18, 2011 | Homelite Carburetor Trimmer Blower...

1 Answer

Have huqvarna 350 it will not prime the bulb is good it check it . how can i check to see if it the carb or some other part of the fuel transfer system? when i pump i see the fuel from the carb being...


The bulb pulls fuel from the carb, if there is no fuel in the carb then it will not prime, reasons for no fuel in the carb is, blocked fuel filter in the tank, fuel hose trapped or split, internal filter in the carb, under the pump diaphram ( alloy cover on the carb held with a single screw ) blocked, you can test the primer, pull the two pipes off, the longer tube on the back of the primer should create a pressure when you press the bulb, the shorter connection should create a suction when you let go of the bulb.The suction side should be connected to the carb.

Sep 09, 2011 | Husqvarna 350 18 Inch Gas Chainsaw 52CC...

1 Answer

PowerMac by McCulloch PM425AV-18 38cc. I have replaced the line from the fuel mixture tank to the primer bulb & replaced the primer bulb. Now the chainsaw won't keep or looses the prime. Now...


Are you sure you have conected the pipes the correct way round, the fuel hose from the tank with the filter on the end goes to the main fuel inlet on the carb, nearest to the alloy pump cover, the other conection off the carb goes to the shorter conection on the back of the primer, the longer pipe on the primer goes back to the tank, just remember the primer pulls fuel from the carb, into the bulb, and back to the tank.

May 15, 2011 | McCulloch 16 Inch Gas Chain Saw MCC1635AK

1 Answer

Replaced all lines (2) plus bulb and still can't prime blower.. if I put gas in spark plug hole runs fine.. even tried leaving off the filter in tank. thanks


I am under the assumption the primer bulb is atop the carburetor. There are check valves under the bulb in the primer base assembly of these carbs. Sometimes, the valves stick and sometimes they go bad completely. There are very small and for all practical purposes unserviceable, however...you can try this...pull the fuel lines off of the carb and spray WD-40 into the brass inlet and outlet. Remove the primer bulb again and liberally spray some WD onto the top of the primer base assembly...this being done in hopes of freeing up a sticky check valve. If you have extra or old fuel lines, hook them to the carb...inject WD-40 and work the bulb to attempt to move the lubricant back and forth out of the carb. Sometimes this works, sometimes not..if valves are bad. There are replaceable parts and kits for the primer base available on the manufacturers websites. The primer bulb does not have to be completely full of fuel to allow the engine to run, but the base assembly can cause problems in fuel flow to and from the carb and even mimic a flooding condition. Don't use carb cleaner and dont soak the carb in any,. Try this and post back if needed.
Please vote on this solution.

Sep 11, 2010 | Craftsman Garden

3 Answers

31cc Poulan Pro Weedeater


Sounds as though the fuel filter may be plugged. The filter is in the tank. Take a look, see if it is visible. Remove and replace. Good luck...Lee

Jul 26, 2010 | Poulan 25cc 2-Cycle Gas Powered String...

1 Answer

I have a push mower with a briggs and stratton 3.5 hp classic. The old primer bulb developed a crack in it so gas would leak out when priming but it would start and run until no more gas would go into carb...


Take the fuel bowl off the carb and check the metering valve to make sure it opens and closes sounds like its closed not allowing fuel through the carb. Its a quick easy and very cheap fix....

Jun 21, 2010 | Garden

1 Answer

PRIMER BULB WONT PRIME


I would recheck the carburetor to make sure you put the diaphragms next to the carburetor and not the gaskets.
Please if it is not priming you may have the fuel lines hooked up wrong. Also check the fuel cap to make sure the vent assembly is there. If the tank is not venting, the tank will get a vacuum in it not allowing fuel to flow.
HTH
Good Day.

Nov 11, 2009 | Homelite 'Yard Broom' Leaf Blower

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