Keeps track of important maintenance times for your machine including oil changes, valve adjustments, spark plugs, etc.Includes log book to record oil changes, valve service, chassis lubrication, clutch service and suspension setting notesUsable with any gas engineRecords and displays up to 9,999.9 hours; total hours is not resettable/erasedJust peel and stick or attach with enclosed hardwareConnects to spark plug wire; no batteries are neededHours automatically roll overSafely and completely encased in 100% epoxy