Suzuki's 9.9, 15, and 20hp share the same engine. The only difference is the programming inside the identical computers, which controls fuel injection and top rpm. It surprises me that anyone buys a Suzuki 9.9, because it is by far the heaviest 9.9 made. I've never seen one, so can only guess that the market for them are fishing boats that want EFI engines on inland lakes with HP limits.
I'd disagree that quality isn't like it was 20yrs ago. EFI in these small outboards has changed everything, so it is apples to oranges there, and Honda still makes the same engine they did 20yrs ago. We abused our Suzuki EFI 20hp for 9 yrs doing absolutely nothing to it. It got a total of 2 engine oil changes and 1 gear oil change in that 9yrs, and the gear oil and one of the oil changes was at the 20hr break-in interval. Original impeller, no greasing, nothing. After 9yrs, the fuel pump failed. Changing it was just a matter of undoing the one bolt in its external bracket, unclipping the two hose clamps, and putting the new one on. 5 minutes top. Meanwhile, all of our newer carbed 2-stroke and 1990's engine friends are constantly working on theirs (carbs seem to be a particular problem nowadays).
Mark
