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The prime bulb is broken where can i get a replacement part

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Check with there customer service or on there web site.

Posted on Sep 16, 2009

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How do I find the correct priming bulb and how do I replace the priming bulb?

priming bulbs are normally held in place by a ring around the base with 2 or three screws
remove that ring and the bulb comes out of the seat
take it to a mower shop as most bulbs are the same
if that is not the case ,take the carby to the mower shop and they will fit a new one for you

Oct 18, 2015 | Briggs & Stratton Electrical Supplies

1 Answer

Does not prime

Make sure that the priming bulb is not broken - if so replace. If bulb is good then the carb check valve is no good and the carb has to be replaced.

Jun 05, 2015 | Garden

1 Answer

Why won't my chainsaw prime?

if no gas will enter priming bulb at all I see only a few possible things for this
(1) gas line broken/melted
(2) filter looks good but has internal plug
(3) primer bulb has a small crack in it (most common )

Apr 30, 2015 | Ryobi RCS3535CA Petrol Chainsaw 35cc...

2 Answers

My prime bulb looses pressure and first start is hard. I have to remove fuel line from filter and cover with thumb prime re install then first start takes time.

Does the engine run fine after it starts? Most common problem with primer bulb losing prime is an air leak in the fuel line or primer bulb. Air leaks don't always leak fuel. If there is an air leak between the primer bulb and gas tank there is no pressure, only vacuum. If it is not a major leak it might not leak without pressure but it will allow air to enter the fuel line. If it is a very minor air leak it could allow air to replace the liquid in the fuel line over time, but so little air once it is primer again that the fuel pump can over come it with volume of fuel.

Primer bulbs do not stay firm, as they are when initially pumped up, after the engine is running. There are check valves in the primer bulb that hold pressure in the primer bulb and throughout the fuel line to the engine. Once the engine starts the fuel pump creates vacuum drawing fuel into the engine diminishing this pressure and releasing the check valves. At this point the primer bulb is just another segment of fuel hose allowing fuel to pass through it as the fuel pump demands. The primer bulb functions much better when the outlet side is higher than the inlet side. This position makes it easier for the check valves in the primer bulb to seat and release as needed. If the primer bulb is functioning properly and is positioned with the outlet side higher than the inlet it should not be necessary to cover the end of the fuel hose with your thumb to get it to prime.

If the engine is hard to start after being fully primed there could be a problem with the fuel system on the engine. Some engines are hard to prime once air has entered the system, especially fuel injected models.

Dec 19, 2014 | Boating

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Won't stay running. tries to run better if turned upside down. wont prime unless it's upside down

Fuel line is broken inside of tank. replace fuel lines and would recommend changing primer bulb as preventative maint

Aug 09, 2013 | Ryobi 30 Cubic Centimeter Curved Shaft Gas...

1 Answer

Priming bulb failing to pull fuel from tank. Pumping bulb makes bubbles in tank. I can prime motor by pumping bulb when unit is tilted on the bulb side. Once put upright, it burns gas in bulb and dies....

hi there clubgy

sounds like you need to go through the carby and rekit it , make sure all the passages are clear and replace the welch plugs and check passages under them too and replace the purge prime valve assy that the primer bulb and flange connect to as you mentioned pick up and return lines are ok with no cracks or splits , make sure the tank breather is ok as well as the tank filter not blocked / restrictred thats about all i can think of

take a look and let me know

cheers pauly46

Sep 10, 2011 | Poulan 30cc 2cycle Backpack Blower

1 Answer

Replace poulan 2150 chainsaw prime bulb

You can use this site to find a Poulan service center or order parts:

May 30, 2010 | Garden

1 Answer


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.
Good Day.

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

1 Answer

Have a LT160. won't stay running. replaced filter, external fuel pump, all fuel lines. cleaned carb, jets....?????

did you check the primer bulb to make sure it was full of gas if it isn't the try to prime it if it doesn't fill up the theres a little diaphram in the carb. that might be ripped or broken & needs replaced

Nov 08, 2009 | Garden

1 Answer

Problem with are 2001 everude boat motor model# 9.9eidevl 45ic

The fuel line priming bulb acts as a check valvue. The bulb is more than likley bad. Cheap to replace.

Apr 25, 2009 | Light Outboard Motor Boat Bass Fishing...

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