Engine Applications
The MAINTENANCE MINDER can be used on any lawn mower type engines. The only limitation is the spark firing frequency must be greater than or equal to 10Hz. As most engines are operating at 20 or 40 spark firings per second, compatibility is not a problem. Easy Hookup

Operation:
The 5 digit display shows the run time of the engine and is initially set to zero, 0.0. When the engine is started, the meter will record the run time in tenths of hours. If 6 minutes (1/10 hour) is run, 0.1 count will be displayed. The display will flash on and off for an hour when the recorded time is 25 hours or in the multiple of 25 hours, i.e.25, 50, 75, ect. Press RESET button by a pointed object can stop flashing at once. When the count reaches 9999.9. It will automatically reset back to 0.0 for the next increment