Yanmar 3ym30, 2013 Ranger 21 ec. 237 hrs. Tach stopped registering. Indicator stays 0. Ckd all connections. Don't see loose or corrosion. In the manual it shows how to setup keyless instrument panel. There are 4 options under the Engine set up. Mine said P127 when it stopped registering. Is this the correct designation? If not, I'll reset to proper. As always, thanks.
stewartn@optonline.net
stewartn@optonline.net