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312Icarus
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I was told that on the /2 carbs, the idle needle adjustment was "in" for richer, "out" for leaner. This seems counter intuitive. Am I right or am I wrong?

Icarus

wa1nca
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VBMWMO #8374
Ashfield Ma.
Joined: 09/27/2012
Posts: 511
Fuel mixture

312Icarus wrote:

I was told that on the /2 carbs, the idle needle adjustment was "in" for richer, "out" for leaner. This seems counter intuitive. Am I right or am I wrong?

Icarus

Yes /2 carbs in is richer

/5 /6 in is leaner

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Tommy Byrnes
54 R51/3 55 R50 64 R27 68 R69US 68 Sears Allstate 250 (Puch)

312Icarus
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Thanks

Thanks...that is what I thought.

Icarus

schrader7032
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VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6784
The screws on the /2 slide

The screws on the /2 slide carbs (and all slide carbs, at least Bings) control the amount of air being introduced. So "in" cuts off air, making it richer. On new CV carbs, the screws control a gas circuit, so the result is backwards.

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Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

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