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Simple question......which jet goes in which spot on the cb400a carbs? Its been about 6months since i took these carbs apart and cant remember which main goes where.
 

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The smaller jet is the primary main jet. It goes in the hole closest to the engine or closest to the idle mixture screw. The larger is the secondary main jet. It goes in the hole farthest from the engine which is also the hole that lines up with the metering rod.

This may be helpful:

http://www.hondatwins.net/forums/63-fuel-supply-carburation/15614-carb-parts.html

If you want to put them together only once and have some time try this one:

http://www.hondatwins.net/forums/63-fuel-supply-carburation/24191-rebuilding-vbulletin-carbs.html
 
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