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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Noches
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<blockquote data-quote="greg brillus" data-source="post: 179324" data-attributes="member: 597"><p>Most bikes run rich.......a bike that starts and runs quite well and even idles from near cold is basically rich.......this is not a bad thing, but it can and will fowl plugs and wash the bores a bit as well........if this is the case, it is worth while to actually lean off the carb, even if this just means winding out the pilot screws a little.........if the engine spits back a little from cold, this is actually a good thing as that issue will go away as the engine warms up........it can be a fine line between running rich and leaning them to run more clean.......Constant bad spitting back is too lean, and a smaller cut away will fix that.......however going from a 4 slide to a 3 will be too big a jump and the engine will run too rich.......On shadow carb's a #4 slide with around 20 to 30 thou machined off the base of the slide will fix this condition.......any more and it will run too rich.......they can be quite sensitive, but once you make these changes, the bikes run so much better for it........Cheers.</p></blockquote><p></p>
[QUOTE="greg brillus, post: 179324, member: 597"] Most bikes run rich.......a bike that starts and runs quite well and even idles from near cold is basically rich.......this is not a bad thing, but it can and will fowl plugs and wash the bores a bit as well........if this is the case, it is worth while to actually lean off the carb, even if this just means winding out the pilot screws a little.........if the engine spits back a little from cold, this is actually a good thing as that issue will go away as the engine warms up........it can be a fine line between running rich and leaning them to run more clean.......Constant bad spitting back is too lean, and a smaller cut away will fix that.......however going from a 4 slide to a 3 will be too big a jump and the engine will run too rich.......On shadow carb's a #4 slide with around 20 to 30 thou machined off the base of the slide will fix this condition.......any more and it will run too rich.......they can be quite sensitive, but once you make these changes, the bikes run so much better for it........Cheers. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Noches
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