What Carb is this???

[lindy1950]

Carb is off a JLO 230, that's on a Rupp Ruppster. Only markings is on the intake flange face "BDC 13", and an "H" and "L" under the adj. on the left side of carb.

 

[mmisterbungl]

seems to be some kind of carb that was used on older chainsaws and some kart engines. THe H and L mean High and Low for your high speed and low speed adjustments.

McCulloch BDC Stock Specs .........................

 

[sawcollector]

That is a Walbro diaphragm carb.
The H is the high mixture adjustment and the L tune the fuel mixture at idle, in case you didn't know.

 

[lindy1950]

I guess I should be more specific, not only what make, but what model. Have looked at dozens of sites and models of Walbro and can't see one that matches this carb. Some are close, but the fuel pump has more plates - like 4 plates instead of 1, and this carb has no fuel return line.:shrug:

 

[Modding_out]

I have a slightly un-related question.

I have heard of people using chains saw carbs before, whats up with that?
I mean, I for one have never seen a chainsaw that had a 10-12mm venturi

Am I looking in the wrong places or some thing?

 

[steven Durham]

I could not find any information on this carb. But with only one plate and the end cap it might be that this carb would work as a gravity flow carb.
A lot of carbs never had a return line to return fuel to the tank. In fact I have never had a tank that used a return line . The Tri-Sport RTS SL had an optional kit that you could add to the factory tank for a return port but I never did the upgrade.
Steve