I just completed a SU HS4 rebuild and have a small problem; both float bowls
are flooding (pumping fuel out the overflow pipes). The new seats and
needles are of the standard type and the new floats are plastic and cannot
be adjusted. It is my understanding that to adjust the floats I need to
place shims under the needle seats, yes??? How do I know when it is correct?
Where can I get the shims? The rules in the Haynes manual do not apply with
all plastic floats so I need advice ASAP. Thanks in advance for helping get
me back on the road...