Last year I bought a new Suzuki DF 9.9hp outboard. I noticed at the time that the 9.9hp and the 15hp models are very similar, same cubic capacity etc.
I am damn sure that the 9.9 must be a restricted version of the 15hp but I am buggered if I can see how Suzuki have done it. I had hoped that there might be a restriction in between the carb and the inlet manifold but having looked this doesn't seem to be the case.
I contacted a Suzuki dealer who passed me over to the Suzuki UK Technical Department. The Tech dept said that they 'do not recommend modifying the engine in the nature you have described'.
Not knowing how the engine is restricted is driving me mad. Can anyone shed any light or point me in the direction of someone who might be in the know and willing to share the big secret!
Cheers
Billy
-------------------- "He is not only dull himself, he is the cause of dullness in others."
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Suzuki outboard expert needed
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