Float Level

locOleoN

Is that the best you got? OK.. now my TURN...
Hey gents,

I found this to be a particuarily interesting article.

http://groups.msn.com/HondaCB450DOHC/techquestions.msnw?action=get_message&mview=0&ID_Message=19257


To check the float height, make yourself a gauge out of one of those junk credit cards that arrive in the mail every few day. Set the float bowl down on it and mark the edge across the narrow dimension of the bowl. You're going to cut INSIDE these marks so the edge of the card will ultimately rest on the edges of the carb body. Scribe a line exactly 2 cm. below the edge of the card - that'll be the float height. Cut a rectangle out of the card (Xacto knife, single-edge razor blade,,) within the float bowl marks and along the scribed line, then hold the card up to the bottom of the carb and cut away whatever is necessary to clear the jet tower. Hold this under the carb so the bottom of the float rests on the inside edge of that 2cm box and the edge of the card contacts the bottom edge of the carb body. Turn the fuel tap on. If fuel leaks out, your float level is too high. If no fuel leaks out, lower the card just enough that it doesn't contact the edges of the carb body. If fuel doesn't start to flow out of the float valve, your float level is too low. Adjustment is made by bending the little tab that contacts the needle. Since at least some of the carbs use a needle with a spring loaded float contact, setting the float level with the carb upside down may not work. This is easier, anyway – and it doesn’t require taking the carbs off.
 
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