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    Slipping prop

    I have a 1999 mercruiser 5.0 alpha one out drive, prop is slipping , factory aluminum prop, looking for replacement hub , the inside looks like a tapered stepped cone it does not resemble the flo master 2 . Any suggestions..
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    91 150 hp xr4 hard to start

    Motor starts and runs fine until it warms up. Hard to start after being shut off for a few minutes. Will eventually start. Then runs fine. Until its shut down again. Doesn't happen everytime. Idles fine after started.
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    Seafoam vs regular mix has?

    Ran my boat today on 2 gallons of fuel with 2 cans seafoam cleaner. Ran awesome. 5100 rpm .Once I ran that out hooked motor back up to regular mix fuel. Dropped back to 3900 RPM's.? Anyone know why the difference?
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    Spark plug condition

    Plug removed after full throttle shutdown. Weak spark maybe ?
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    1977 Evinrude 55hp coil test specs.

    Looking for the actual ohms readings I should get when testing the primary and secondary . Lots of videos on this , just not with my actual coil. Any help is appreciated..
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    Resistor type spark plugs vs non resistor type

    Working on a 1977 Evinrude 55 horsepower that bogs down at wide open throttle. Motor is new to me was given NGK br7hs plugs. By dealer. Have been researching the older CD ignition system requires a non resistor style plug could this be my issue?
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    1977 Evinrude 55hp Bogs at WOT.

    Working on 55hp 1977 Evinrude, starts and idles great. Bogs down at wot. Compression 158 /164. New fuel lines and pump. Plugs gapped at 0.40. Sparks jumps 7/16 gap. Seems ok until about 1200 rpm then Boggs max rpm about 1800. Leaf plares look good. Carbs have been gone through twice. Have had...
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