Re: Introduction and first questions - family relic, first start in 30+ years

Posted by efair on Jul 07, 2021; 4:50am
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Introduction-and-first-questions-family-relic-first-start-in-30-years-tp4064536p4064617.html

OK - new bowl gaskets, o-rings for the fuel rail, and float gauge arrived today.  All is back together.  A couple of questions:

1) Is exact float height critical, or is it more important that they all be "close" and consistent?  I found my existing float heights fairly consistent but with a slight gap shown when using the vintagecb750 gauge.  The float/pin assembly isn't exactly precise, I'm wondering if "consistently within 2-3 mm is OK.

2) The o-ring kit included four small o-rings as well - I can't find where these might be used.  The air screws don't have grooves for these rings.  None of the other fittings seem to make use of o-rings besides the fuel-rail tees.

3) what exactly is/how exactly does the "overcross" work?  I.E. the slight amount of "negative throttle" that can be applied when the throttle is at rest?