Has provision for a hand cranker on the front.
Very interesting find - lots of unusual characteristics on this one - that drivers side mounting bracket held down by two head bolts is quite beefy and right in the path of the normal routing for the generator belt.
Also, that woodruff-keyed snout extending beyond the crank pulley is more likely a PTO. The hand crank interface was a set of ears on the front of the balance-pulley:
when the engine fired those trailing 'ramps' would push the hand crank out of the snout (so the operator didn't get turned over by the running engine
)
