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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
229/289 Carb Set Up
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<blockquote data-quote="greg brillus" data-source="post: 109893" data-attributes="member: 597"><p>Rob, I think 0.018" is the original size, but sometimes the hole is burred and not quite true to size. Opening out to 0.020" will not hurt anything and should give you some more useful adjustment of the mixture screws. These should be approximately 1 and a 1/4 turns out from the seated position. If this does not help, then I would be looking at the slide cutaway and the float levels. The stock number 4 slides tend to be a bit lean on modern fuels, although this does not explain why it ran ok before...........Keep trying.</p></blockquote><p></p>
[QUOTE="greg brillus, post: 109893, member: 597"] Rob, I think 0.018" is the original size, but sometimes the hole is burred and not quite true to size. Opening out to 0.020" will not hurt anything and should give you some more useful adjustment of the mixture screws. These should be approximately 1 and a 1/4 turns out from the seated position. If this does not help, then I would be looking at the slide cutaway and the float levels. The stock number 4 slides tend to be a bit lean on modern fuels, although this does not explain why it ran ok before...........Keep trying. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
229/289 Carb Set Up
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