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  1. R

    propeller

    i have a johnson seahorse 15 model J15rcsd is there any prop i can get to get more speed without hurting engine ?
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    propeller

    i have a johnson seahorse 15 model J15rcsd is there any prop i can get to get more speed without hurting engine ?
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    water pump caution

    i just installed a sierra water pump and it started very iregular pumping so i tore it apart again only to find that the base plate under water pump the paint peeled off and was i guess plugging things up, so i put old johnson pump on and all was fine . also the new impeller from sierra was much...
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    johnson idle problem

    question how much or fat of idle should i have in neutral, i only have a slow idle in neutral, now thats its cold i have to keep restarting til it warms a bit. i would think i could give it a little more gas in neutral to speed up idol or not ? it is a 15 johnson 1980 model J15rcsd , seemed like...
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    need good advice

    i have a chance to buy another 1980 johnson 15 horse completly redone from new pistons to lower unit and new paint job motor looks new and runs better than the three i have,i can buy this motor for 800.00 from a friends widow, or i been wanting to try a 2006 15 horse johnson wich i can buy for...
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    water pump

    hey i replaced my water pump and not sure all is well, the pee hole stream starts up right away wich tells me it is working but i have just a little spit out of holes on rear of motor im thinking since it became colder like 40 degrees it wiuld take longer to open thermostat but after running at...
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    1984 johnson 25 horse

    i have an opprunity to buy this motor for 200.00 the mechanic says all it needs is rings and gaskets maybe a carb kit, i would like your thinking on this year motor and if you think its a bargain> after i priced all parts plus a few extras like water pump ect. i figure i can rebuild this for...
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    shop manual

    i need the best shop manual for a 1980 johnson 15 horse model J15rcsd im not sure seloc is the one i should get , i just aquired 2 of these motors and want to do complete rebuilds on motor and lower unit what do you guys think i should get and where to get ??
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    shifter adjustment

    ok guys i have lower unit all together and all new pistons ,rings, head and all new electronicsand motor is running sweet in test barrell, my question is where can i adjust the shifting linkage or cant i ,it works fine but a little sloppy for my taste <br /><br />1980 johnson 15 horse<br />model...
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    lower unit shifter rod

    hey guys was putting back together my lower unit and broke the shifting rod connector, i cant stress how important i have a new or used one by wednesday would you guys have one or know where i can get one quick???? its a 1980 johnson 15 horse model J15RCSD
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    lower unit seals

    i have a 1980 johnson 15 horse J15rcsd<br /><br />wondering how hard it is to replace the seals in lower unit i have seals already, just finsihed putting new head and water cover on. looks like all i need is a puller, any advice ?
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    need help

    1980 johnson 15 horse model J15RCSD<br /><br />MY EXHAUST HOUSEING IS COATED WITH A GREY LOOKING GUNK AND IT WILL DRIP OUT CENTER OF PROPELLER EXHAUST IS THIS NORMAL OR WHAT COULD BE WRONG?
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    lower unit problem

    1980 johnson 15 horse , model J15RCSD<br />I FOUND THAT SHIFTING STARTED GETTING HARDER AND WHEN I TOOK LOWER UNIT OFF I FOUND FULL OF WATER IN THE PART WHERE SHIFTING ROD IS IT WAS FULL OF SAND HALF WAY UP ALSO, I SEE A HOLE ON THE OUTSIDE BUT HOW CAN I FIND IT ON THE INSIDE THE SAND AND MUD IS...
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    1980 johnson complete

    ok guys i just completed replacing head and water cover, also replaced water pump i will try to enclose pics of the job, you guys have made it simple. i want to decarbon my engine what way is quickest and safest? and will this take out grime in exhaust tube? my engine is J15RCSD
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    please help

    i need torque setting for cylinder head in ft. pounds for johnson 15 horse model j15rcsd i have 2 manuals and 2 different settings
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    johnson 15 model j15rcsd

    i am replacing head gasket do i need sealer on the gasket i have already put this together and it leaked into the cylinders a little and out the top of head just a bit
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    15 johnson j15rcsd

    ok i started tear down and already broke a head bolt any idea what is the best way to remove it , it actually started to turn when the head brok off
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    honning cylinders

    is it ok just to hone the cylinder walls and replace pistons and rings on a 1980 johnson 15 horse j15rcsd , was thinking of just deglazing the cylinders what do you exsperts think ?
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    thermostat

    i have a 1980 johnson 15 horse and was told after an overheating problem that i do not need the thermostat, and would never overheat again if i dont use one , please help with this i would like to hear lots of thoughts on this also this is the motor i am going to rebuild starting this weekend
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    johnson engine diagram

    anyone have a engine diagram for 1980 johnson 15 horse model j15rcsd or know where to download one
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