Winco GM100 - Manual (Page 7)

5. Engine Speed (Frequency) Calibration
5.1 Panel must be calibrated to engine flywheel for proper
frequency display.
5.2 Controller default is 180 pulses per revolution (180 fly wheel
teeth)
5.3 Start engine by placing the toggle switch in the RUN
position.
5.4 Move the Running Time toggle to the Scroll Lock position.
5.5 Adjust engine speed to 1800 RPM. Verify with a hand held
tachometer.
5.6 Locate the hole in the front panel above the LCD. Using
the wooden dowel supplied, press the pcb mounted button
behind the faceplate for 1 second and release.
5.7 Upon release, the Hertz will display 60.0. The control is
now calibrated to the engine flywheel.
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