Simple hour meters to track your engine and pump run times for maintenance. Attaches to spark plug wire.

My local Honda small engine master technician recommends changing the oil at these intervals:

• GX390/ Predator 420 change oil every 40 hours

• Pump oil change every 300 hours

• Gear box oil monthly regardless of hours

• Spark plugs change every 2-3 months

• GX690 oil every 60 hours and oil filter every other oil change.

• Hour meters https://amzn.to/3o30gPZ

• Recommended engine oil: https://amzn.to/3EPWgcm

• Recommended pump oil: https://amzn.to/3kbBmfV

• Recommended gearbox oil: https://amzn.to/3GTdJlU