Ski Boat Forum

General Category => General Inboard Ski Boat Discussions => Topic started by: Bigtgrove on July 12, 2020, 12:09:35 PM

Title: Tachometer
Post by: Bigtgrove on July 12, 2020, 12:09:35 PM
Over winter my tachometer quit. What is the best way to troubleshoot. I did replace alternator.
Title: Re: Tachometer
Post by: backfoot100 on July 13, 2020, 06:17:05 AM
There should be a gray signal lead on the back of the tach going to the coil. Don't remember for sure which side but you can verify continuity and connection.
There is also a switch on the back of the tach to set it for 4, 6 or 8 cylinders. That switch can get sticky or dirty over time. Cycle the switch several times to try and clean the contacts inside. I've seen that fix them albeit for a short term.
These tachs don't last forever and they do go bad. I've had to replace mine and I know of numerous others who have had to replace them.