Sovereign push mower primer

[openspaceman]

2 hours ago, ChrisNewport said:

The hole is deffinately supposed to be there, there is only 1 pipe leading from the primer into the carb, there is no return. From what i can make out it pushes air in to the fuel bowl and forces a little petrol out through the main jet to prime as it doesnt have a choke. The only way i can see for the primer to get full of fuel is the float isnt shutting the needle off fully and eventually overnight its filling up. Trying to find spare carb parts is proving tricky. The engine looks like a rv150 thats on some mowers but they have a different carb.

@GardenKit is the chap that deals in mowers and repairs, he may know where to get stuff.

[GardenKit]

So... some primers have no hole, such as the ones on Briggs Sprint engines. They work by squirting the petrol in the bulb into the manifold when the primer is pushed. It refills when released and sucks fuel up. 
Some other Briggs engines, and most Chinese engines that have primers as opposed to chokes, use a primer with a hole. These work by pushing extra air pressure into the carb bowl which pushes the fuel down and up through the jets into the carb throat. They only work when your finger is over the hole, the rest of the time the hole vents the bowl. There is no way that these leak fuel unless the carb needle is jammed and the carb is flooding (as Chris said)
Some primers with holes are connected to the carb by a pipe, but others transfer air via drillings in the air filter cover.

[ChrisNewport]

On 10/03/2021 at 13:27, Gav73 said:

 

I might be able to help you there, as well as the one I’m running, I’ve got one where the engine gave up, I’ve been using it for spare parts, so I might have what you’re looking fot

 

@Gav73 if the offer is still open, the ebay one turned up and its the choke version, the seller says the picture is of the non choke version but they are no longer available. So im after the carb if youre willing to let it go.

[Gav73]

4 minutes ago, ChrisNewport said:

@Gav73 if the offer is still open, the ebay one turned up and its the choke version, the seller says the picture is of the non choke version but they are no longer available. So im after the carb if youre willing to let it go.

Sure, just send me a picture of the part you need and I’ll get it off the spares mower