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 Travis Carter

I wanted to tune a 1-cylinder lawn mower engine to 1460 rpm when idling. The instructions say that the speed indicator should be set to the number of turns of wire from 2 to 10 times. Would I buy this if I already knew RPM? That's why I bought this device! I was expecting this to give me an accurate RPM reading so I could set the idle to 1460. So this product is useless for me. : The engine drives the torque converter, so it is always in drive mode (NO CLUTCH), so 10% less revs makes it dangerous, deadly! Either report the buyer on the sell page or remove it from the market. You'll end up in court if you sell a product where users always set the engine to dangerous settings.