Recent content by CorB

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    Non existing model number 50RSL77S

    I have a '77 50 HP rope start/tiller model Johnson. This motor has never run before and I want to check and clean things first before trying to let it run. That's why I want to order some parts like f.i. a head gasket and carb kits.<br />Since BRP has diagrams and part numbers on their site...
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    Carbs from a '77 50 HP on a '78 55 HP?

    I have an annoying idling problem with my '78 55 HP Johnson outboard (see Other topic).<br /><br />It seems one or two of my carbs have some kind of problem, since I think it's running too lean at idle, but not always. I've cleaned and rebuilt the carbs dozens of times, so I'm out of ideas...
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    Orifice sizes 55 HP, anyone know?

    Hi,<br /><br />Continuing idle problems with 55EL78S, did check a lot of things following the various advices I've been reading here, but no solution yet.<br /><br />I want to check if the idle orifices (fixed orifices) are the ones that originally were in there, but I need a cross reference...
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    Convert 50RSL77S to electric start

    I have an '77 50 HP rope start tiller model. Although it's old it never has run before, so it's basically new, apart from some scratches here and there.<br /><br />I would like to convert it to an electric start model. Does anybody know if there have been complete kits in the past or do the...
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    How is a Michigan Wheel SST prop on a small 55 HP

    Hi,<br /><br />I have a 1978 Johnson 55 HP 2 cylinder.<br />I know this isn't a high performance beast, but I like to get the best of handling and performance out of this little motor.<br />It has a 11 3/4 x 17 aluminium OMC prop and it's mounted on a 14 foot glastron V-Hull.<br /><br />It's a...
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    Exchangable flywheels for Johnson 55EL78S

    Hi there,<br /><br />I have a Johnson 55 HP 1978. The flywheel has worn teeth and the starter locks itself up sometimes. So I like to replace the flywheel with another second hand.<br />The original part number (in 1978) of the flywheel is 581837. I have found a second hand with number 581836...
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    Wiseco, Johnson & ring end gap

    Hi there,<br /><br />I have a '78 55 HP Johnson.<br />I had it rebored, because I had too much piston ring end gap and eventually too much piston to cylinder clearance.<br />I've ordered 2 Wiseco 0.030" oversize pistons (3.217" bore size) and gave them to my machine shop to rebore the...
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    Use coppergrease for assembling powerhead Johnson 55

    Hi,<br /><br />I'm going to put the powerhead of my '78 55 HP Johnson together. When I was pulling it apart a lot of bolts had the white corrosion on it and were hard to remove.<br />I thought of coating all bolts with coppergrease when rebuilding because it lubricates and it can withstand...
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    Crankshaft play on 1978 Johnson 55 HP

    Hello,<br /><br />I am rebuilding the powerhead of my '78 Johnson 55 HP, with a used crankshaft and new lower, middle and upper bearings.<br />A mechanic measured the crankshaft journals and they are within specifications.<br />After assembly of the powerhead I can feel some play on the...
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    Length of throttle link Johnson 55 1978 (55EL78S)

    Hello,<br /><br />The throttle link between the ignition advance mechanism and throttle cam has been adjusted. Anybody knows how to adjust it to the proper (original) length?<br /><br />Is there also anybody who knows what the ignition timing should be at idle speed (running engine)?<br /><br...
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