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  • Features three resettable service alarms that show when its time to clean air filter, change oil and valve service
  • Resettable time mode allows you to record running time periods
  • No power or ground wires required
  • Larger, easier-to-read display
  • Resolution in 10 rpm increments
  • Fits all single- and twin-cylinder 2- and 4-stroke gas engines operating with firing pattern 1 spark = 1 rpm
  • Includes log book to track maintenance, double-sided tape, screws and fasteners
  • Measures 2 1/8 inch W x 1 3/8 inch H x 1/2 inch D with 1 3/4 inch center-to-center mounting distance on rear