Yamaha - Oil injection pump assy - 6D0-13200-04-00Yamaha Oil Injection Pump Assembly Oil System Pump 6D0 13200 04 00 Overview On Yamaha two stroke setups, the oil injection pump is one of those parts you never want to second guess. Its responsible for feeding the engine the right amount of oil at the right time, and when its off, youll feel it quick. Ive seen motors run rough or worse when the pump starts failing. When its working right, though, everything stays smooth, protected, and running the way