Briggs 17hp wont start and stay running

Daquiri_briggs

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Yes.

The float is not touching the needle soon enough or the needle is not cutting off the fuel supply
If you have not touche the carb since you tried to start it last, pull the fuel ine off at the fuel pump and try blowing gently into it.
The float bowl should be full and you should not be able to blow throug the line because the needle should be closed.
Did you ben that tang exactly the way the book described it ?

I will get to that after church. I have not tried starting it since my last post. I did however remove the fuel line last night before I took the muffler off and I didnt hook that back up. You want me to blow into the fuel pump, the fuel line, or the top of the carb?

The book just said bend it to be parallel with the gasket. I tried that, but I cant see the float or anything like that when it is installed. To see it I would have to lift it and then it would not be parallel with the gasket anyway. So I am not sure how to do it other than just looking at it and eyeing it the best I can. I uploaded some pictures of what it looked like after I did this.
 

bertsmobile1

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Sorry
Brain fart time your carb has an inbuilt fuel pump so you can not test the float valve by blowing.
So you will have to check it by the method shown in the manual that Rivets directed you to.
You put the carb in a vice, upside down.
protect the side with some rag.
get it sitting as close to level as possible.
put a 6" ruler flat across the float and measure the height of the ruler above the bolt holes as shown in the manual.
If not exactly the same then bend the tang and remeasure.
repeat till you have it exactly parallel.
near enough is not good enough with this one.
presicion is vital.
 

Daquiri_briggs

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I think I got it....

STUPID FREAKING STARTER "GEAR" CRAPPED OUT ON ME. So I have to get another one ordered and see if it is working like I would expect. I feel like it was idling to high, but I undid the screw a little for that piece. It started twice and ran, I ran out of gas so I filled it back up, but noticed the starter gear teeth got shredded between the two starts.... WTH!

Anyway, I will follow up after I get that part looks like on the 2nd.

For some reason, the engine would spin and then I would get a loud squeak followed by it spinning backwards.... That seems to be how the starter gear teeth got messed up.
 

bertsmobile1

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Make sure you get the right gear, there are several of them and the wrong one can jamb the starter or wreck the teeth on the flywheel so order it from a real B &S dealer using your engine numbers.
Sounds like your are getting closer
 

Daquiri_briggs

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Alrightt guys... sorry for the delay stuff at work went wrong and I had to put in like 80 hours this week!!

Anyway, I finally got the starter gear replaced and have now started it up a few times. My remaining issue is around the throttle. When I start it, the engine doesnt idle... it just builds up until I turn the engine off, or I mess with the idle lever on the side of the carb. If I push the lever on the carb, it will idle just fine and run as long as I hold that in place. As soon as I move my hand it starts to rev up again.

The throttle itself seems okay, although it runs pretty high in the low position and when I take it to high throttle....!!! that is scary!!!

So, whats next? I am about to go get some photos of everything and a video... the video will just be for sound so you understand what I am saying on the revving up.
 

Daquiri_briggs

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Maybe I was just a little scared lol.... I think it is actually just running REALLY well, so I thought it was not acting right.

Take a look at the video, but I think it is fine.
https://www.dropbox.com/sc/yefg9ml1a3z9az4/AABWGz8jF9NE47xruCcbw7oTa



So, only thing is, if you notice on the longer video I did have to use starter fluid to start it. Maybe I bent the float to much now? Very likely, I would think... Let me know your thoughts.
 
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ILENGINE

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engine sound good is the choke closing all the way when trying to cold start
 

Daquiri_briggs

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engine sound good is the choke closing all the way when trying to cold start


I actually never understood how a cold start works. SORRY!!

So.... I need to try and shut the choke to start it. The choke will shut all the way and open all the way as well. I did Close it just a bit when I was scared it was revving to high!
 

Daquiri_briggs

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So, I shut the coke and it started right up. I still feel like it is running so fast... Anyway... I am going to get ready to put everything else back together
 

ILENGINE

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the only way to know for sure how fast it is turning would be a tachometer.
 
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