Larry,
You can check the float levels mechanically but I prefer to do the
"fluid" level routine. If you have the stack split at least in pairs
you can set a pair on a level surface and feed them with a gravity
fuel supply ... I put a piece of clear tubing on the bowl drains, (or
just slide over the black rubber hoses .. depending on what size
tubing you have laying around), and opened the bowl drain valve ...
then compared the level in the tube against the centerline reference
marked clearly on the rear of the fuel bowl, (use a marker/pencil to
mark the actual level you are trying to achieve on the back of the
fuel bowl below the embossed center line). Just pop the bowl cover off
.... make a adjustment and re-check ... You can shut off your gravity
fuel supply, (in my case a Virago rolled within the vicinity of my
work area), and hold the clear drain tube below the level of the carb
and let them drain into a glass jar etc ... No matter how you decide
to do the initial adjustment, (touch-up and check or measure from a
fixed reference point in the bowl etc), ... this method allows you to
observe what the operating fuel level will be when re-installed on the
bike ... The embossed center line is of course the center of the
needle jet and if I remember correct you should be 13-16mm or so below
this line, (16mm is a lower fuel level than 13mm etc). IMHO .. this is
a critical adjustment ... + or - 1mm isn't going to get it ... decide
what you want to use, (I prefer highest within spec), and make them
"all" exactly the same level .......
I am not sure it if was you who was asking about pilot fuel jet part
numbers the other day ... either way ... the numbers are as follows
for anyone who wants them:
40 = Yomama - 4G0-14142-40-A0
42.5 = Yomama - 4G0-14142-42-A0
The Mikuni part number for these jets is - N151.067 - (ask for the
size you want ... 40, 42.5 etc ...)
I would not recommend using a larger PFJ if you are planning to run
open vboost tubes ... you will just be too too rich ... other than
that ... knock yourself out .. as you can adjust for anything or
render it completely lifeless by simply putting larger pilot air jets
in ........
IMHO as always ....
campbell
----- Original Message -----
From: "Larry Young" <[EMAIL PROTECTED]>
Subject: carburator floats
> I'd like to check and or adjust my carburator floats.
> I have the carburator's out of the bike now while I am
> converting to solid motor mounts. Can this be done on
> the bench or do you have to have the electric fuel
> pump working? It looks alot easier to work on if I
> could just feed gas into the float bowls and check the
> levels on the bench in case I have to re-adjust the
> float tang.
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