This is the infamous Yanmar click. It happens because Yanmar used cheap wiring on an otherwise good engine. If you poke around on the Internet, you can find lots of pages with people addressing it.
On my 2GM20F, it was primarily a crappy fuse box that was positioned near the air filter. Eventually, I also replaced a wire that went from the starter to the solenoid, I think. Anyhow, it was undersized and copper instead of tinned. Once I did those two fixes, the click stopped. Jack Brennan Former C&C 25 Shanachie, 1974 Bristol 30 Tierra Verde, Fl. From: Ronald B. Frerker Sent: Monday, August 12, 2013 10:56 AM To: cnc-list@cnc-list.com Subject: Re: Stus-List Yanmar starting I had a similar problem where I had to punch the start button 6-8 times to get the starter to crank. Had already replaced the starter button. Finally would just click and then go dead; not even the buzzer. Ended up being corrosion inside the sheathing in the battery cables. Cut back a few inches of cable until it was clean and now seems to start immediately. Apparently the corrosion among the copper strands has enough resistance that it heats up and sucks the battery power enough so it won't have the potential to flip the solenoid. Ron Wild Cheri STL -------------------------------------------------------------------------------- From: Brent Driedger <bren...@highspeedcrow.ca> To: C&C List Canada <cnc-list@cnc-list.com> Sent: Monday, August 5, 2013 8:38 PM Subject: Stus-List Yanmar starting Hey everyone. My Yanmar 1GM10 is slowly getting more and more difficult to start. With full battery charge, good ground and contact, I'm finding the only way to get the starter to spin is to give quick taps to the start button. If I hold it, it just saps the power system and everything shuts down briefly. Is this a sign of the starter becoming weak? Brent D C&C 27-5 Lake Winnipeg Sent from my iPhone _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com -------------------------------------------------------------------------------- _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com
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