Mike, A while back I needed to replace a similar yanmar tach. I was given one that was salvaged at my local boat yard and while it was exactly the same size and make, it had “P=127” whereas the original had “P=97”(pulses/rev). I swapped it in and it started working. It does read high by a factor of 127/97. I intended to replace it, but I got used to scaling by 75% to correct. We all operate by sound anyway. Yes, I would prefer a P=97 RPM reading but this it was free.
- Paul E. 1981 C&C Landfall 38 S/V Johanna Rose Fort Walton Beach, FL http://svjohannarose.blogspot.com/ > On Jul 31, 2025, at 9:05 AM, Hoyt, Mike via CnC-List <cnc-list@cnc-list.com> > wrote: > > The lens on our tachometer needs replacing. Would likely be best to replace > the tachomenter > > This link shows an identical control panel > > 3GM instrumentpanel type B - Yanmarspecialisten > <https://www.yanmarcenter.se/2022/06/02/3gm-instrumentpanel-type-b/> > > Any ideas on where to find a tach? > > Thanks > > Mike Hoyt > Persistence > Halifax, Nova Scotia > Your contributions help pay the fees associated with this list and help to > keep it active. Please help by making a small contribution using PayPal at: > https://www.paypal.com/paypalme/stumurray All contributions are greatly > appreciated.
Your contributions help pay the fees associated with this list and help to keep it active. Please help by making a small contribution using PayPal at: https://www.paypal.com/paypalme/stumurray All contributions are greatly appreciated.
