I am in the the process of installing an 80CC dual start engine setup on my bike. The dual start means that it has a pull rope and a centrifugal clutch mechanism. I have noticed that the clutch arm that goes into the chain sprocket area has absolutely no resistance to it, and appears to have no function at all. I can turn it completely around in the block. Does anyone think that this engine setup has done away with the clutch mechanism due to the pull start and centrifugal clutch? Is there really a reason for a clutch cable on a setup like this one, other that to start the bike when peddling? Thanks