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  1. K

    1970 4 hp Yachtwin rough after 20 minutes

    I serviced the engine recently with helpful advice from Chinewalker and Paul M. <br /><br />New impeller and housing<br />Carburetor clean/rebuild<br />Plugs, wires,coils (left condensers and points)<br />New head gasket and cleaned passages<br />Cleaned and reassembled the fuel pump<br...
  2. K

    Yachtwin 4HP Stuck Lower Unit

    I'm doing some long overdue maintenance on the old family 1970 Evinrude Yachtwin 4HP (4036 or Johnson 4R70). I've undone the 4 bolts on the gearcase in order to check the water pump. The foot drops about 1/8" before the drive shaft stops with a metallic clunk. There's no shifter on this motor...
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