[C320-list] Intermitant starter motor issue Yanmar 3GM30F

[Timothy Woods]

I had the exact same problem and it turned out to be the ignition switch
was faulty. One terminal was a little lose and the contacts inside were
dirty. All the power runs through the key switch first and then into the
panel.

Tim
1996  3gm30F

On Aug 7, 2017 4:53 PM, "Warren Updike" <wupdike at hotmail.com> wrote:

> I, too, have exact same issue although ours is a 1993 Perkins M30 with
> 2,000 hrs. Last year I pulled the starter/solenoid to have them serviced.
> They replaced the solenoid. Since then it starts normally about 70% of the
> time. A few rapid pushes of the starter button and it starts. This is not
> only annoying but worrying. I checked the connections in the starter
> circuit and pulled/cleaned, and applied conductive grease. Also, replace
> the start button. No change. Next I will do voltage drop tests on the
> battery cables.
>
> I've checked the voltage at the solenoid when starting and it is a normal
> 10V under load of the starter. I'd like to do this when it fails to start,
> but there's no way to tell when this will happen. In his book, "Boat
> Owner's Mechanical and Electrical Manual" by Nigel Calder, he describes a
> series of tests with a volt meter to track down such problem. This is the
> next thing I'm planning.
>
> I'll provide an update when I get through this. In the meantime, please
> keep us informed of your issue and how you resolve it if you do.
>
> Warren and Pattie Updike
> 1994 C320 "Warr de Mar" #62
> Middle River, Chesapeake Bay
>
> -----Original Message-----
> From: Ken Geiger [mailto:kendgb at aol.com]
> Sent: Monday, August 07, 2017 11:21 AM
> To: c320-list at catalina320.com
> Subject: [C320-list] Intermitant starter motor issue Yanmar 3GM30F
>
> Sometimes when I push the starter button, having turned on the key, there
> is no sound of the starter motor engaging, no clicking but there is dip
> down in the voltage gauge observed.  This leads to think that the solenoid
> is failing.  So far after a few pushes the starter cranks and the engine
> starts.
>
> Anyone have a similar situation and solution.
>
> Also wonder about a source for a new solenoid and starter and if anyone
> has experience with the after market starters and solenoids that are out
> there.
>
> The 320 is a year 2000, engine 3GM30F and the starter is a Hitachi
> labelled 128170-77010   S114-303  12V  98B
>
> Thanks
>
> Ken Geiger
> Northern Dream #765
>
>