MY SM #347 HAS A YANMAR ENGINE AND ZF HURTH TRANSMISSION WITH
HYDRAULIC PROP BRAKE. WHEN THE ENGINE IS NOT RUNNING, THE PROP DOES
NOT TURN. HOWEVER IF I AM RUNING THE ENGINE IN NEUTRAL WHILE SAILING
THE PROP DOES TURN. I SUSPECT ONCE THE ENGINE IS RUNNING AND DEVELOPS
HYDRAULIC POWER, THIS RELEASES THE HYDRAULIC BRAKE. COMMENTS, PLEASE.
JOHN FOLINO