Pilot jet plugs on a BS34? Depends on which one you have. Get a flashlight. If the carbs are off the bike, remove a main jet. Remove the brass washer under the main jet. Tap the main jet holder tube down into the venturi (AWAY FROM THE FLOAT BOWL). It is press fit. Note that there is a plastic or metal ear inside the the well where the main jet holder tube just was removed. This ear is used in conjunction with a slot in the main jet holder to orient the holder in a specific direction once reinstalled... anyway, at this point, there will be a HOLE in the inside of the cast piece that held the main jet holder tube and the hole will be adjacent to the pilot jet well IF the set you have uses plugs. The plugs are used because the pilot jet picks up gas from the main jet well and not the pilot jet well. If there is no hole between the main and pilot wells, your set doesn't use plugs. If there is, your set DOES use plugs.
The plug on a KZ style BS34 will be aluminum or pot metal of some sort and use an oring. The oring is there to keep gas from just passing by. The plug doesn't need to be fitted super tight; there is a small tab inside the float bowl which puts some pressure on the plug when the bowl is in place and tight. If the oring is the correct size, you can put a small coating of grease on it and it will just push in. It will be hard to put in without grease. It should be tight enough so it doesn't fall out if you turn the carbs over without the bowls on.
wiredgeorge Motorcycle Carburetors
Mico TX
www.wgcarbs.com
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