Recent content by Stoneke

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    Mercury 9.9 Problems???

    I received no response to my question on the Merc 7.5 to 9.9 hp motors, so I bought the best conditioned 9.9 that I could find for my Grumman Sportboat. The motor is an ealy 90's short shaft, 2 cycle. Are there any problem areas that I should be watching for? I believe that this motor will...
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    Mercury/Mariner 7.5 to 9.9 Options

    I am searching for one of the above engines in the two stroke 7.5 to 9.9 hp range to put on my Grumman Sportboat. Are there any considerations that indicate good or bad choices for my consideration (bad years to avoid, etc). I presently have a 6 hp Johnson that won't put me on plane with two...
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    Johnson 6 hp modifications

    I posted a thread yesterday re the performance of my 6 hp on my Grumman Sportboat. I received some knowlegeable responses. Short of getting a larger (9.9 hp), are there any modifications possible for this 1974 outboard? Thanks again for your help.
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    Johnson 1974 6 hp performance

    I have a 1974 6 hp Johnson mounted on my Grumman Sportboat (15 ft, 115# canoe/boat). The motor has been tuned by the local marina shop and is equiped with a standard three blade prop. With a 400# load (two adults + gear) I can only muster 8 mph, as measured by GPS. We are at 4500 ft elevation. I...
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    1974 Johnson 6 hp trouble

    I recently bought a Johnson 6 hp, after seeing it run perfectly in a tank. Yesterday, I took it out for a first lake run. It started ok, but when advancing the throttle past the start position, it would miss, sputter and stall. I then continued to run at trolling speed for several minutes...
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