As I understand it the HM/GM series of Yanmar was designed with pre-combustion chambers that allow it to work fine without glow plugs. I don't understand exactly how the chambers eliminate the need for glow plugs or why every manufacturer would not employ this design.
I don't use the switch on mine but I think it was for turning the gage lights on. Josh Muckley S/V Sea Hawk 1989 C&C 37+ Yanmar 3HM35F -- When security matters. http://www.secure-my-email.com On May 17, 2013 8:59 AM, "Robert Gallagher" <trys...@gmail.com> wrote: > >> For a few days I was sure the three position toggle on the yanmar control >> panel was for the glow plugs on my new (to me) yanmar 2gm20f. > > > I would flip that toggle switch for 30 seconds and she would fire right > up. > >> > > As I moved the boat further north from Annapolis to Mystic the spring > mornings got colder and I started to think I might need new glow > plugs..that's when I figured it out ..lol > > > OK...I gotta ask. >> >> I have a 1981 3QM30. Purrs like a kitten. >> >> No glow plug. Start up cold just fine. Just a few more cranks. Before >> this engine I thought all diesels had glow plugs. >> >> What gives? >> >> >> David F. Risch >> (401) 419-4650 (cell) >> >> > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > >
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