I'm no mechanic at all, but aldeer had a discussion about this a few weeks ago and it was an overwhelming response to unhook and always premix.The question was asked to me the other day why I haven’t got rid of Yamaha’s on board oil mixing system, and to premix it instead? I’ve always been told if it’s not broken why fix it.
I understand that if oil doesn’t get mix with the fuel the engine will be toast. So now the question is What would you do delete the Yamaha oil injection system or not.
I’m running twin 200 Yamaha 2-Stroke with the Greta stamp of approval.
Couple guys said theirs failed and when the motor alarm went off it was already to late