Originally Posted by jar944
AHH! I understand what you were referring to. You are misunderstanding how the valve works. It closes by itself once the engine fires (or you release the lever while kicking) From the compression/combustion pressure. Pulling the lever opens the valve.
I only manually closed it in the video to show it's operation.
There is no real need for a lever at all surely? Guy I know uses chainsaw de-compressor valves on large capacity 4T MX bikes, and once the valve is set it closes automatically when the motor starts.