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Discussion Starter · #1 ·
I have a 1979 440 YAMAHA Exciter and it has a single Keihin carb and i was wondering whether running your sled to rich or lean can do any damage and if yes....how can you adjust it? This sled has decent bottom end, poor mid range, and is a beast on the top end....is there a way to even these things out?
 

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1 1/2 turns out and go from there.
 
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