Without a photo or diagram, it's hard to say. But I'll just mention that I have seen some engine controls rigged with both a fuel shutoff and an emergency air-intake closure, to starve the engine of oxygen. Another possibility is that you are looking at a remote compression release.
Just my WAGs...
P.S. That's looks to be a lot of boat for the money!
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Pacific Seacraft Crealock 31 #62
NEVER CALLS CRUISINGDAD BACK....CAN"T TAKE THE ACCENT
Last edited by JohnRPollard; 09-21-2008 at 10:24 PM.