Quote Originally Posted by linhardt View Post
I have compared diagrams and every part is the same, including jets and carb parts, except for the reeds. The reeds are the only part I see that has different part numbers. The reeds on a 15 seem to have a greater parabolic curve to them than the 9.9. I am sure I could just bend the reeds out more and make a difference, but would probably be better to just buy a set of 15HP reeds. And yes it is a two stroke. But if I change the reeds would the timing need to be changed? Someone mentioned to me that I could advance the timing 4 degrees. If so, how do you do that on a manual pull start? I have seen a video where they did it on a electric start, they just crank the engine via the starter and timed it with a timing light. Do you just hook up the timing light and pull the crank several times? How is it possible to do that with one person? Or is it even necessary? Anyone have an idea of a good prop for it or should I just stick with stock? I have hardly any knowledge of prop performance.



Part Number Part Name Quantity Remarks
63V-13610-00-00 REED VALVE ASSY 1 UR 9.9
63W-13610-00-00 REED VALVE ASSY 1 UR 15

yep, only difference between the 9.9 and the 15hp is the reed block......