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Carborator timing

 
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jonyskids
Member


Joined: 21 Feb 2014
Posts: 13
Location: Little Cayman
Buddy 50

PostPosted: Wed Oct 03, 2018 12:50 am    Post subject: Carborator timing Reply with quote

I have a low mileage Buddy 50. Was having some compression issues, I mean zero compression. I took it apart and replaced the piston and rings. New Spark plug, just in case. She fires up nice and smooth with carborator start runs for half and minute and dies. I can throttle it and get a little more time and then it dies.

I see two adustment options on the carb. One flathead screw driver nut. If I open this more then a quarter turn, fuel poors out the rubber hose just infront. There is also a knob that one could turn that moves a post up or down inside the carbarator.

I pretty green, so any advice would be great!

Thanks,

Jon
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ucandoit
Member


Joined: 24 Sep 2014
Posts: 283
Location: Minnesota
2008 buddy 125

PostPosted: Wed Oct 03, 2018 3:07 pm    Post subject: Reply with quote

Jon. I don't know the Buddy 50, but on the Buddy 125 that flat head screw that you opened is used to drain the carburetor of fuel. When you open the screw the 1/4 turn, about a cup of fuel, not any more, should pour out of the little black rubber hose hanging below the carb. We do this when storing the scooter for winter as we want the carburetor to be empty of gas because gas that sits there for months may gum up the carb. parts. That is what I've been taught. So, gently re-tighten the screw.
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JettaKnight
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Joined: 29 Mar 2007
Posts: 511
Location: Fort Wayne
Series Italia 161

PostPosted: Wed Oct 03, 2018 5:11 pm    Post subject: Reply with quote

What makes you so sure it's a fuel issue? I mean it could be the stator or CDI or ...

Maybe it's it petcock not opening and supplying gasoline to the carburetor.
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Stanza
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Joined: 29 Jan 2018
Posts: 306
Location: Chicago
Puch Maxi

PostPosted: Wed Oct 03, 2018 6:57 pm    Post subject: Reply with quote

That thumbscrew (plastic knob) on the carburetor is only there to adjust your idle speed higher or lower. As you've discovered, the screw at the bottom of the carb is there to drain fuel out of it.

When it dies, does it shut off like you flipped a switch, or does it cough and try to keep going? You could be running into a fuel starvation problem. If that's the case, run it till it dies out, then immediately open up that drain screw on the carburetor and see if fuel comes out. You should get about three tablespoons worth, if all is well.

Next question,
It's low mileage, but do you know what its history was? Did it sit for a long time before you bought it? You might simply need to clean the carburetor thoroughly.
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wheelbender6
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Joined: 07 Jul 2013
Posts: 576
Location: Houston area
Genuine Buddy 125

PostPosted: Thu Oct 04, 2018 12:09 am    Post subject: Reply with quote

I wouldn't consider somebody that can change their own piston and rings to be "green".
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