I have recently acquired a 9.9hp 2005 Yamaha 2 stroke. I have been informed it is relatively easy to de-restrict to achieve the performance of the 15hp 2 stroke.
Is there a good guide somewhere on what to do? Also is it something that would be recommended by anyone who has experience in doing it?
I have recently bought a boat which came with a 1999 Yamaha 5hp 2 Stroke outboard and when I connect the fuel line from the auxiliary tank it kills the engine.
The strange thing is it appears not to be starving the engine of fuel but flooding it instead. I can start the engine and it runs fine...