I would appreciate advice regarding a Lightwin 3 Evinrude Model 3018 that I recently inherited. This outboard has been stored since 1982. The problem is high speed - it has none. The motor starts fine and runs well at low speeds. However, when I initially ran the motor, it would not achieve higher speed or rpm when throttling up. The next day that I ran the motor it ran ok at high speed for awhile. Then it reverted back to it's inability to throttle up to high speed/rpm. I am running 50:1 fuel ratio. As far as fuel/air adjustments, the low speed needle adjustment seems fine. Turning the high speed adjustment needle does not create high speed results, but will stall the motor at extreme adjustments. Both cylinders seem to have spark. Should I rebuild the carburetor or could something else cause this problem?
