fuel tap modification to manual mode

[wolfgangh]

Hi, my fuel tap for the later CV carb A-kettle does no longer shut off when engine is not running, I already installed a repair kit with new diaphragm and rubber seal, with little success. I definitely want to convert to a manual tap with ON / OFF / RES only.
I only found instructions on the web to convert the tap for the older models with VM carbs and 3 fuel outlets, but nothing for the newer tap with 1 outlet.
Can anybody here help me with some details? I cant figure it out myself.

[karl pa]

On mine, I tapped threads in the center hole in the petcock body that feeds to diaphragm and plugged with a set screw with a little epoxy, also the hole between the diaphragm and bowl, I removed metal between the passages on the back side of the petcock handle to form a backward J. When the handle points front is OFF, when the handle points down is ON, when the handle points back is RESERVE

[jabcb]

My post on converting an early GT triple petcock to manual. Have also used this method on T-series twins.

There is some variation in which passages to block off. So you need to confirm this for your specific petcock.
The size of the set screws also varies a bit from petcock to petcock.

http://www.suzuki2strokes.com/forum/vie ... 30#p177630

It's easy to forget which position is which. So I use some red paint to mark the off position.
This also serves as a visible reminder that the petcock is manual.