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    oily residue on plugs?

    I changed my plugs on 1973 85hp Johnson last year. After having som hesitation problems I checked the plugs and I have a black oily residue on all my plugs. Is that normal? Its not a lot and its only around the threads and on the electrodes (I think its called).
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    spark plugs?

    What indicates a bad plug?
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    Dry gas???

    I see the term dry gas from time to time...what is that? I had a problem with my motor running bogged down and 1/3 power. I changed my fuel line,cleaned the filter screen and replaced the fuel connectors because I notice bubbles at the tank fittings when I would squeeze the primer bulb. I just...
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    OMC???

    What is OMC? I'm seeing that everywhere? Aftermarket?
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    Should the lower unit be flushed before new lube is added?

    Should the lower unit be flushed before new lube is added?
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    gearcase lubin??? What coloor is bad when its drained?

    I am a fairly new boat owner. I'm learning things from this site. I just found out about lower unit lubing. When I pulled the plugs the lube that ran out was a dirty milky substance. Did I do damage not changing it since I got it? About a year and a half ago...who knows when the last time...
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    1973 Johnson 85HP outboard Diagrams for ID??

    Anyone know where I can find a diagram to help me Identify what I'm looking at when I take the outboard cover off???
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    coolant???In an Outboard???

    I gotta Johnson 85HP 1973, should I be adding coolant were the thermostat is. I just ordered my book and haven't gotten it yet. How do I even get to the thermostat?
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    Air at the tank connection?

    When I squeeze the primer bulb I can hear air going in and out at the tank connection. when i take the hose completely off and squeeze I can hear air at he side that connects to the tank. Can this be the problem while my bulb is going limp while I'm pumping it and I can only get to one third...
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    compression test at the plugs?

    should the motor turn completely over when I'm doing a compression test at the plugs?
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    should gas tank vent be open while running???

    I'm trying to figure out why my motor is hesitating. Should gas tank vent be open while running? Also, should the motor turn completely over when I'm doing a compression test at the plugs?
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    compression gauge for cars will it work on my johnsons 1973 85hp?

    compression gauge for cars will it work on my johnsons 1973 85hp? Aren 't the plugs on boats fatter?
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    Lower unit gear lube???

    What is lower unit gear lube for? How do you know when to use it?
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    Lower unit gear lube???

    What is lower unit gear lube for? How do you know when to use it?
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    Where should I start...Motor hesitant...

    My motor hesitates whenever I try throttling up and i only get about one third of my power???
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    What are the effects of a beat up prop???

    My prop was run into the sand and a pice a little bigger than a quater was kocked out. It also has some rough edges. Is this something that needs to be dealt with right away???
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    What is I/O???

    What is I/O??? I thought it was inboadrd or outboard. Like something that says I/O can be used for both. Is that right?
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    Is it nomal to have to fully choke???

    Evertime I run the motor 1973 johnson 85hp and shut it down for like an hour I have tyo fully choke it to get it to start. Otherwise the starter just spins but no ignition. When I choke fully it'll ignite and shut off immediately the when I push the choke back in and start it normally it...
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    Change 85hp '73 fuel filter???

    I can see the enclosure clearly marke "fuel filter." Is changing simply a xcase of remove and replace. Have done small jobs on cars. This will be my actual first time messing with my outboard other rtan changing the plugs. I am a first time boat owner and I bought it used to try and learn...
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    How can I get a repair manual for my '73 85HP????

    I've been looking and it seems all the manuals that I find either skip my year or my HP. Any idea why and where I can get a book on my motor. Model # 85ESL73M :confused:
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