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Re: reset service hours beeper S250. Posted: 09/19/2009 03:59 PM. To reset the service clock press the LIGHTS button to turn on the panel. Then press and hold the HIGH FLOW and AUXILIARY PRESSURE RELEASE buttons simultaneously, until reset appears in the display.
TO SET THE TIME AND CALENDAR: 1  Press S3 button to select NORMAL TIME mode. 2  Press and hold S2 button for approximately 3 seconds, the second digits will blink. 3  Press S1 button to reset the second digits to zero.  Press S3 button, the minute digits will 1  blink. Press S1 button to set the minute digits.  Press S3 button, the hour digits will blink.