Yanmar 4JH3 Just Keeps Running . . . and Running

[Hudsonsailor]

Hi
In case you haven't tried this. This a normal problem when some one turns the key switch to the OFF position before activating the shut off button until you hear the audible signal
while engine is still running turn key to Run position, (not Start) and press shut off button

[Cadence]

Originally Posted by Hudsonsailor

Hi
In case you haven't tried this. This a normal problem when some one turns the key switch to the OFF position before activating the shut off button until you hear the audible signal
while engine is still running turn key to Run position, (not Start) and press shut off button

Brilliant! I'll bet you cured the problem.

[Peregrine1983]

Originally Posted by jls095

Just cover the air intake with a hard cover book or piece of wood in a pinch. No need to shut off the fuel supply. It'll die immediately.

+1 for that. A big book or a solid piece of wood works. Don't use something that will break and get sucked in.