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    55 Chrysler lost power

    Hello, [I] have a 1970 55 hp Chrysler that I put in the water and it ran great. The next trip it started right up but now seems to be down on power. It runs smooth and idles but barely gets up on a plane. It does cruise along without hesitation, surging or backfiring just seems to have slowed...
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    50 Merc prop diameter question

    Hi Everyone, I have a 2001 50hp 2 stroke on a boat I just put together and it has a 10.5 x13p prop and the WOT is about 400 rpm to high. I can get a good deal on a 11.5 x13 prop and was wondering what RPM reduction I would see. The boat is a 17" Scout. Thanks
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    Installing Tach on 01 50hp Merc

    Hello All, I am mounting my 2001 50 hp Merc on a new boat and decided to install a Tach so I can prop it correctly. I have the harness that plugs into the controls and the wiring color code chart I know the grey is the Tach wire the black is the ground but on the chart is says...
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    Installing a Tach on 50hp 3cyl

    Hello Everyone, I want to install a tach on my 2001 50hp 3cyl 2 stroke merc and when looking up tachs they refer to the number of poles instead of cyl's. Can someone tell me how many pole tach I need and what exactly this means. I also assume I need to buy the harness that...
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    Yamaha factory cable question

    Hello, I am hoping someone knows if the factory 2001 yamaha control cables are the same as 33c cables or 3300 cables. I am trying to buy cable end adapters for my cables and there are 2 different adapters one is for 3300 and one for 33c cables and I cannot seem to figure out what my factory...
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    Question about Prop diameter vs pitch

    Looking for some direction on a starting point for a prop. I am installing a 50hp Merc on a 17" Scout CC and have a question as to which is better a larger diameter with less pitch or a smaller diameter with more pitch. I have looked at 12"x10"p and 10.5" x14"p. I not counting on getting the...
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    Using Yamaha controls and a Merc engine

    I have a 2001 boat that is rigged for a Yamaha motor and I have a 2001 Mercury 50 hp 2 stroke and have heard it is possible to use the Yamaha controls but would like to know what is needed. It is a center console with Binnicule controls so the ignition is separate and should not be an issue...
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