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Old 05-11-2006 | 10:18 AM
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Bax
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From: Monticello, IL
Default RE: changing idle screw O-ring ???

The O.S. Max #40B carburetor uses this o-ring on the idle needle:

OSMG7392 22781800 O-RING SMALL #2K/#2SB $2.29

The one you asked about, "24981837" is an o-ring for the high-speed needle.