Review on Runleader Digital Maintenance Tach/Hour Meter: Backlight Display, Battery Replacement for Small Gas Engine - Ideal for Riding Lawn Tractor, Generator, Compressor, Chainsaws, Outboard Motor, Pressure Washers by Dennis Brinson

The power supply is easily replaceable (CR2032 battery). The instructions for installing the sensor cable are a bit misleading. DO NOT change the insulation of the sensor wires to expose the small black and red wires. Just wrap the sensor cable 4-5 times around the connector cable and secure with a zip tie (had to learn how to do this on YouTube). The programming is easily suitable for different applications. Using this mini speedometer on outboard motors and jet skis has a significant disadvantage. The sensor cable is too short, only about 4 feet long. It was barely long enough for my John Deere self-propelled mower. I wish they had done a longer tour?! Am I not allowed to give 5 stars?