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VM34RS / VM36RS Fuel Petcock Options
You may want to switch to an
Fuel Petcock if you are going to a high-perfromance
These fuel valves will work fine if you are using an "A" model (standard / large) fuel tank.
On certain Kaw 900's and 1000's, however, especially those using a "B" model (LTD) fuel tank,
clearance problems can occur with the stock fuel valve or with a Pingel valve when using VM34/36's.
From a mechanical standpoint,
a high-flow petcock is not essential on a street bike when switching to
performance carbs like the Mikuni RS series. These, and other such carbs are designed with a high-capacity
float bowls. This insures that the carb will be able to provide enough gas during high demand conditions.
The info below explains one way
to deal with the interference that sometimes results when mounting
RS carbs and using a stock petcock, especially on LTD models.....
|This modification is not difficult. If you don't want
to do it yourself though, we charge $40.00
to do it for you.
In the pic above right, you can see the handle retaining screw has been moved from the bottom of the petcock to the top. This creates a "reverse petcock".
In the pic at left, you can see the blank pad left on
the stock petcock when the part is cast. While these petcocks were
drilled for 900's and 1000's to locate the retaining screw at the
bottom, the same castings were used for other Kaws that were drilled on
top. The undrilled "flat"
By simply removing the handle, and carefully drilling and tapping to 4mm X .7mm 180 degrees across from the original hole, a "reverse" petcock is made. (See pic Below).
Re-install the handle backwards from the original, put
the screw in the new hole, and you're done.
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