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Join Date: Aug 2009
Location: Sidney, BC
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Re: Yanmar 1GM10 runaway?
OK, so coming out of the harbour this morning, throttled up, fine, throttle back, fine, throttled up again (I was seeing if it would rev higher after having the prop cleaned).
Loud metallic banging, sounded like it was come from under the cockpit floor, throttled back and up went the revs again. Before I could get into the locker to cover the intake, the revs came back down and she shut off. As I was now drifting about 100ft from shore, with zero wind and current taking me back in, had no good options but to fire her up again, she started just fine and was fine for the rest of the trip.
I am 100% sure this is not a runaway, it's almost like something is taking it slightly out of gear (the knocking), and at the same time, putting full throttle on. The obvious candidate is the Edson single lever control, I think it is getting caught up inside somehow and managing to apply both the throttle and shift at the same time.
1974 C&C27 MkII
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