Im pretty sure the book said 50 hours dump oil then 50 hours later dump oil and filter.
Maybe its 100 and 100. I looked through my service manual and could not find it but i know it lists only changing filter every other change. But who here would do that. Whats another $6.
Just want everyone to know the 100 hour oil change I stated is not my opinion, it came from page 36 under 100 hour service in my YM2002D operation manual. I personally change mine a little more frequent than that.:thumbsup: