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  1. C

    Engine/Tach Diagnostics and Tools

    I found out recently that my OMC tach was set to a 4 when it should be set to a 6. I wanted to get a tach meter, timing light and compression gauge. I came across the it below and wanted some opinions if this is a good start for an outboard diagnostic kit. I already have a digital fluke...
  2. C

    Speed/RPM's for hydrosport 18.5 cc

    I have a Hydrosport 18.5cc, with a 120 V4 OMC. The question that I have is that I can pull 5800 RPM and only get 28.7 mph out of this boat. Should I expect more. The prop is a stelletto 13 1/2 X 15 (cupped). I did find out that the tach was set on a setting of 4. Should it be set to 6. At a...
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    Question about Evinrude V4 120

    I recently purchased a 1993 Hydrosport 185 CC equipped with a Evinrude V4 120 ocean pro (1993). According to the Hydrosport book the boat weighs around 1750lb. I have a steletto stainless steel(cupped) 17 1/4(i think) by 15 prop. Full throttle gives me around 5800 rpms with a speed of 28.7...
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