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Hi I have a 1991 Mako 241 with twin 1999 Ox66 Yamaha 150's. I just got these engines and I was using my old props off of the 1987 Yamaha 200's that I had. The props were 13.75 x 19-M's (L and R hand) and I was not getting my rmp's at (W.O.T) I was only turning 5100! So I sold those and bought...
HI...1999 Yamaha ox66 150 h.p. How can I trouble shoot the supply voltage for the fuel pump? Tried swapping key switches and wiring harness from port motor same result. Motor will run on starting fluid? When you try to start the motor the start prime light comes on and stays on. How does the...
