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    1987 20 hp evinrude running lean

    My evinrude starts and runs only choke fully on. <br />It runs very rough and as soon as I push the<br />choke off or open the throttle it dies immediately.<br />Occasionally it spouts smoke from somewhere under<br />the flywheel. Fuelline, carb and pump should be<br />OK. Bad crankshaft seals...
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    1977 Yamaha 28A spark plug type

    I bought an old Yamaha 28A and I must replace<br />the spark plugs. Is NGK B7HS a good choice?
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    omc coil terminology and part numbers

    Hi!<br />The charge coil(black coil charging power pack)<br />of my 20hp 1987 Evinrude has partly melt and I<br />can't read the first digit(s) of the part number.<br />The rest are 11441. Is charge coil the correct term? It seems that google can't find any shop<br />selling omc charge coils.
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    bolt size for flywheel puller

    Hi!<br />I bought today a harmonic balance puller to<br />remove the flywheel. What size and thread are<br />the 3 bolt holes in the flywheel? My Evinrude<br />is 1987 20hp.
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    Charge coil output voltage

    Hi all!<br />I've a 20hp 1987 manual start Evinrude and there<br />is no spark at either plug. I have 2 cheap <br />digital multimeters and they show both a maximum<br />voltage of 30-35 volts rms from the charge coil<br />when cranking. Clymer's shop manual says the minimum peak voltage should...
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