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    Difference between 2014 Yamaha F8 and F9.9

    Thanks for the specs! Clearly I was reading the old school stuff. Lesson learned, always start in this forum if you need questions answered correctly. Again, thanks for all your help and replies.
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    Difference between 2014 Yamaha F8 and F9.9

    Typo on my part, meant 2010.
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    Difference between 2014 Yamaha F8 and F9.9

    Thank you for your posts, I now clearly understand the differences in camshafts is what makes the HP difference and the proper parts illustration shows these parts are different from each other. How about my propeller? Currently it’s an 8.5D x 7.5P which is banged up enough to go ahead and...
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    Difference between 2014 Yamaha F8 and F9.9

    My apologies if this is an old subject, couldn’t figure how to search 1500 pages of posts on the subject. Anyway, what makes the 9.9 1.9 HP greater than the 8.0? I know the displacement, pistons, and rods are all identical. Is it in the lower unit gearing; or prop used? Is it a governor of some...
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    Help with Yamaha FT9.9EXH float adjustment

    Could anyone help me with what the float adjustment should be on a 1987 Yamaha 4 stroke 9.9 HP Model: FT9.9EXH, Code: 6G8, S/N: 782010 outboard motor carburetor? The carburetor is stamped 6G800 TEIKEI Japan. Any info on this carburetor that I?m finishing a rebuild on would be very much...
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    How do you find a gear case leak?

    I know I have a slight leak in my gear case. My question is what is the best way to find where the leak is? No oil in gear case submerged in water with 5 lbs pressure on it and watch for where air bubbles are coming out?? In advance, thanks for looking?. Scott
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    4 Stroke 9.9 Yamaha Problems

    I bought a 1987 Yamaha saltwater 9.9 electric start 20 inch 4 stroke in pretty good all original condition for a hundred bucks. I went through the carb, which was a little nasty, but now seems to be all good and clean. 2 problems: (1) to start this motor, I must put thumb over the air intake of...
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