P S . . .
Many find the shear size of this antique intimidating. Just pulling on the rope to turn it over can take considerable effort, However both cylinders going on compression at the same time also means you have almost 40 degrees at the bottom of the cycle when the ports are open and the outboard turns freely. So, the starting technique is to wrap the rope around the rope sheave so that turning it counter clockwise gives you about four inches of free rope. This gives you the ability to bounce the flywheel back and forth at the bottom of the stroke. Timing the force of your pull to the clockwise bounce of the flywheel will give you the added energy to easily crank the motor. . . 😉 
