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    Johnson 15 hp, 1975 bottom plug fouling

    Scratching my head on this one. Need to know where to look. Here is the problem (not me of course). Brought the motor in for tune up because it kept fouling the bottom plug. When on the lake I kept changing the plug right after fouling, with a new one, and would run ok for some time. Thing about...
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    Wizard WH-6 fuel pump

    I'm looking for repair parts for a Wizard WH-6 Super 5 fuel pump. My diaphragm wore out. Does anyone know where I can get parts for this old timer? Does anyone know where or who I might contact, to get the rubberized material that is used in fuel pump diaphragm applications? Any help will be...
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    75 Johnson 15hp drive coil

    Question removed.
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    1975 Johnson 9.9 Decals

    Does anyone know where I can get the decals for the cover and cowling for a 1975 Johnson 9.9? Does anyone know who might make them? I'm restoring this motor. Thanks
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    9.9/15 Johnson Loosing RPM's at WOT

    This is a 1992 J10ELENA. I totally overhauled it, converting it to a 15hp. It has the 15hp carb and exhaust. Bored to thirty thousands over, new carb, new spark plugs and wire. Engine was broken in according to standard procedures. I now have about 30 hours of run time on it. It starts, idles...
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    Reed petal stops

    Can anyone tell why a shim was added to the reed stops on the 1979 and up engines but NOT on the 1974 thru 1978 Johnson 9.9 and 15hp? Common sense tells me that the engine will breath better at the top end and possibly get more revs. But it's not recommended to shim the stops on the 1974 thru...
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    Armature Plate

    I have a 1975 Johnson 9.9. While tuning it up, changing points, I found that the ARMATURE PLATE had a little bit of slop in it. I can move the plate laterally about 5 or 6 thousands and see the points moving also when doing this. My question is, does this movement affect performance? It seems to...
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    Water leak around spark plug

    I have a 1984 Merc 50 4cyl. I noticed when I put the engine up for the winter that there was water trickling out around two of the spark plugs. When I rev the engine the leak is worst. Checked all the bolts and they were tight. Can any one tell me what happened? Is the cover bad? Did the engine...
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    Which starter repair kit?

    I have a 1984 Mercury 50. The brushes went out of the starter, due to water getting in somehow. The starter is a Mercury Marine # 50-73521. I tried to find the repair kit here on iboats.com but got confused when I seen the part that looks like mine but, it said Arco repair kit and there are two...
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    Wierd carb air problem Johnson 9.9

    Johnson 10RELENA 1992. Just bought it and the man said it wouldn't run right. I've tried everything to make it run right and it came down to the carb. It seems it's not getting enough air. It idles smooth. In the test tank it revs ok, goes right up to 5000 rpm. Put the cover on and it will go to...
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