small B & S mower engine won't start

Deano823 · 08-21-2009, 10:44 AM

I have a small lawn mower engine that won't start. When I push the primer bulb, a small amount of gas comes out an opening in the side of the carb; This opening isn't a needle valve. It looks like a small metal ball that may be just spring loaded perhaps to relieve pressure or maybe a vacuum. It's all formed as part of the carb body, so there's no way to remove it or to take it apart. I'm wondering if I should be looking for something else that is wrong, that's causing the gas to leak out here.

**K-B** · 08-21-2009, 12:07 PM

I'm thinking that maybe something is plugged up in the carburetor, causing gas to be forced out passed that ball. A disassembly and cleaning is probably in order for the carburetor.
Does it start if you pour a bit of gas directly into the carburetor?

Deano823 · 08-21-2009, 12:15 PM

Haven't tried that yet, but I will tonight and I'll get back to you.
Thanks for your help!

08-21-2009, 10:44 AM	#1 (permalink)
Deano823 Registered User Join Date: Aug 2009 Posts: 2 OS: XP	small B & S mower engine won't start I have a small lawn mower engine that won't start. When I push the primer bulb, a small amount of gas comes out an opening in the side of the carb; This opening isn't a needle valve. It looks like a small metal ball that may be just spring loaded perhaps to relieve pressure or maybe a vacuum. It's all formed as part of the carb body, so there's no way to remove it or to take it apart. I'm wondering if I should be looking for something else that is wrong, that's causing the gas to leak out here.

08-21-2009, 12:07 PM	#2 (permalink)
K-B Mod. Linux, Wrench Turner Join Date: Oct 2005 Location: NY Posts: 2,884 OS: Vista, Ubuntu My System	Re: small B & S mower engine won't start I'm thinking that maybe something is plugged up in the carburetor, causing gas to be forced out passed that ball. A disassembly and cleaning is probably in order for the carburetor. Does it start if you pour a bit of gas directly into the carburetor? __________________

08-21-2009, 12:15 PM	#3 (permalink)
Deano823 Registered User Join Date: Aug 2009 Posts: 2 OS: XP	Re: small B & S mower engine won't start Haven't tried that yet, but I will tonight and I'll get back to you. Thanks for your help!