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K&B .21 outboard tuning help

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K&B .21 outboard tuning help

Old 04-11-2012, 11:27 AM
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Default K&B .21 outboard tuning help

Hey guys I just came into possession of a k&b .21 outboard with throttle exhaust and I need some tuning advise. Which direction is lean and which is rich, what is a good starting point and any tips on fine tuning it?? Thanks for any help!
Old 04-12-2012, 11:46 AM
Jerry Dunlap
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Default RE: K&B .21 outboard tuning help

Turn the needle valve to the right for lean and left for rich. Try about 3 1/2 to 4 turns open to start.

Old 04-12-2012, 01:44 PM
Ron Olson
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Default RE: K&B .21 outboard tuning help

Told ya! Take it from one of the most famous outboard tunnel guru's though.

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