yeah, I have a few of these carb's, brand-new never-used (purchased back in 1986). I'm considering setting them up for my OPS 45 Marine engines and running in a Youngblood mono.
I'm not sure if they would work well on any of my current Picco P45R or CMB 45 VAC engines? Not sure if they provide enough volume?
I've attatched an original M&H carb diagram, pretty neat little mechanism. Intrigate. Do to asymmetrical motion of control arm the user must install a control horn to provide proper articulation of carb valve open/close motion.