Suzuki GS400E

 Last week, after a 20 year hiatus, I got back on a 2 wheeler; bought a 1983
Suzuki GS400E. Two days into ownership I noticed gas pouring from one of the
carburetor breathing/overflow tubes (on the right)  & the bike did not want to
start. When it finally did (start), foam came from the the oil dipstick hole.  I
shut off the engine & discovered that the crankcase/gearbox was full of gasoline.
Drained everything and assumed that something made the carbs over-flow and drain
into the crankase. (I am worried about a complex looking tank valve which seemed
to be connected to the manifold, but I have been unable to get solid info on
what this contraptopn does, how it does it do it, and could it be fixed?)
I have replaced the carb carb valves, but have been unable to get data on how to
set (& to what value) the carb carb. Apparently the "E" model was not shipped to
the US thus all the manuals (Clymer & Hayes) show a different carburator. I
suspect mine are Mikuni Mikuni34SS carbs, but cannot tell for sure (does anyone
know?) I also have difficulty in figuring out how the choke activating mechanism
(& thotle throttle) fit together (should have taken a photo, but did not…)
If anyone knows how/where to find a schematic on the carb, carb hight (height
where is it measured), information or suggeston on the strange gas tap, or ideas
of what went wrong (& how to fix it beyond replacing float vales) I would
greatly appreciate it.

 Adam <Adam[at]profhorvath[dot]com> wrote:


If the rubber sleeves are old, quite a lot. Tip: wrap rags round the
rubber manifolds, soak the rags in boiling water, and soften the rubber.
Makes the job easier.


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