Briggs 5hp Flathead

[FlamingChicken]

I'm trying to get this motor running for a friend. It will run if I drizzle gas down the carb, but it won't pick up the fuel from the tank. The only thing that I see is strange, is that it is missing that metal tube that goes from the carb to the engine. The carb side is 'capped' off, but the block side is wide open. Could this be the cause?

 

[brendonv]

Nah thats just a valve breather tube. Its capped off so you dont have a hole after your air filter otherwise it can suck in dirty air. (may be the reason it isnt working, jet blocked) Ur pickup tube is probably blocked. Take the tank of the carb, it thinks its with 3 screws and on the carb is two tubes. Clean them out with an air compressor. While your at it clean the tank. Put some bolts and nuts in there, some fuel and vigorously shake it. All the bolts with scrape all the rust out. Repeat about 3 times.

 

[motor_head]

might be the diaphram, one of the bolt holes for the air cleaner goes down to the bowl fill that up and see if it runs for a bit
otherwise just clean out the carb

 

[Blazkowiez]

You do have a clogged carb that needs to be cleaned, check your gaskets, jets etc... The very first thing anyone does when they want to make their engine run better is remove that EPA recycler tube. I am not in any way advocating that we remove their emissions improving innovations, it is something that many many people do when they want their engines to run better because then it sucks up less dirty air...

 

[FlamingChicken]

OK guys, pulled the carb and this is what it looks like:

What is the best method for cleaning these carbs?

 

[brendonv]

that is definitely ur problem. Just scrape that crap off and then clean it with fuel and spray with the air compressor.

 

[FlamingChicken]

I was thinking wire brush, but wasn't sure if it would be too abrasive. Didn't know if there were any tricks/special tools too use. I'll just see what I can do. Thanks for all of the help guys!

 

[EagleTalons]

Isn't there supposed to be one more pickup tube there?

 

[r_chez_08]

Isn't there supposed to be one more pickup tube there?

There is on my 3hp

 

[natman316]

Isn't there supposed to be one more pickup tube there?

There is on my 3hp

I also have one on my 5hp B&S just like this one.

 

[newrider3]

That cast nub with all the varnish on it serves as the bowl pickup on this carb.

 

[natman316]

You do have a clogged carb that needs to be cleaned, check your gaskets, jets etc... The very first thing anyone does when they want to make their engine run better is remove that EPA recycler tube. I am not in any way advocating that we remove their emissions improving innovations, it is something that many many people do when they want their engines to run better because then it sucks up less dirty air...

is that EPA recycler tube you talk about that tube that connects to the carb?

 

[Blazkowiez]

Out the left hand side of the carb on briggs, it runs from the valve cover which is under the tank to the carb itself.