Since about 2008, give or take a few years, Hunter replaced the engine Key Switch with an I/O button and a START button on the engine control panel. The panel is manufactured by Ultra Panel Marine. The 3YM30 definitely has 3 glow plugs, the glow connector and a glow relay fitted but nowhere on the panel is there a button or other means that would energize the glow plugs. That is that I have been able to find. I would be very interested to hear from other owners as to their findings or knowledge on this subject.
Thanks
Len
Thanks
Len