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    big twin starter wiring/ground issue

    1959 rds21b super seahorse, 35hp... the metal box that contains the starter solenoid has a lug on it where three "negatives" are congregated... the fat negative ground from the engine block, the fat black cable that goes to the battery negative post and one more that goes forward to the dash to...
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    omc gas tank on a yamaha

    i have a bunch of omc gas tanks and omc motors, but only one yamaha motor and gas tank. the basic design of the fuel fittings and lines looks the same, but is it really? because my yamaha tank is all metal and leaves rust stains on my boat and i trust plastic more... and well i have plenty of...
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    miss during idle only? big twin

    almost no matter where i have the idle mixture needle set, it has an irregular misfire while idling that clears up and runs great under mid and high power. it's not enough to keep me from using her, but i'd like to fix this. i don't think it's an air leak in the fuel system, because it runs...
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    why i like omc...

    i just have to vent a little... while shopping for a 13 foot boston whaler, one candidate had a 40hp mercury, 4-cylinder, and another had a 40 hp yamaha, both are oil injection 2-strokes. so i go to the mercury forum and ask their opinion about that motor. i get nothing, nada. not a single...
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    boat speedometers? how do they work?

    i know gps is the real way to get an accurate speed, but still... i just bought a pristine 1985 boston whaler, 13 footer with a 40hp oil injected yamaha of the same year. everything, and i mean everything on this boat is exactly like new, except the yamaha "speedometer", which reads in...
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    1989 40hp high altitude

    just got an oil injected 40hp yamaha from an owner who doesn't know much about boats or engines, but said the carb was "adjusted" for where he used it, which was a lake at 7000 foot level. i live at sea level. so, do these carbs have adjustable mixture or fixed orifices for open throttle use...
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    omc guy's first mercury?

    looking at a boat that comes with a '97 40hp 2-stroke, 4-cylinder, yes, a 4-cylinder. wondering if this is considered a good motor, or is it a "weak sister" plagued with reliability problems. how reliable is the oil injection system? thanks all. -peter
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    omc guy's first yamaha

    i have 5 omc motors, [only two are actually mounted on boats], and have been into boating for about a year... but i'm pretty darned into it now. anyway, i'm looking at buying a third boat, [the biggest is only a 16 footer], that has a good running 1990'ish yamaha 40hp motor on it. this motor...
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    do small performance hulls exist anymore for outboards?

    been into boating for about a year here, so there's a lot I need to learn... anyhow, about the only NEW outboard performance hulls I seem to see are bass boats. and i dont ever see smaller performance hulls for outboards. I see plenty of older ones though. in fact, I own one. it has a "bass...
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    fuel flow, always check the basics!

    this goes for anyone... but my motor is a 1959 super seahorse 35hp, rds21b... anyhooo... had this thing for 10 months now, and it was my first boat, ever. i've been sooo thankful that the guy who sold it to me was honest and that it has continued to run well and reliably. i've been...
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    build a wood test stand? 50hp 2-stroke?

    is there a set of plans or photos of a nice, simple wooden stand to put my 185lb, 1975 evinrude, 50hp on? i've got tons of 2 x4's and other miscellaneaous lumber stacked neatly in my side yard. i suppose i could have put this in the general boating section, but it IS specifically for an...
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    bought a '75, 'rude 50hp, sight unseen

    all, about a month ago i posted that about 3 questions pertaining to a '75 evinrude 50hp that i was looking at on craigslist. in case you don't recall, i'll jog your memory: 1] the seller claimed it idles too high and that his mechanic told him it needed the carbs rebuilt. i asked here if...
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    big twin points and condenser longevity

    1959 super seahorse, 35hp, model rds21b... bought this not even a year ago, and it was already a runner from the day i bought it. i've been using it ever since and it's fine. i did pull the flywheel to hook up the cutout switch and a dash-mounted ignition shutoff...but stupidly, i never even...
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    cheap stainless omc factory props?? for real?

    my 135hp v4 evinrude, [1975] has no trouble over-revving a 21" stainless prop on my light sport boat. so i was thinking of trying out a stainless 23" prop, but they are hideously expensive, like $400'ish most places you look. BUT on evinrude's very own factory parts web site, it lists 23" sst...
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    light evinrude 50 on a 13 foot whaler

    this is a follow-on question to one i asked earlier about which year of whaler they switched to 20" transoms, and i got that answer, thanks. i also got an answer from someone who tried a 50 on it, when it's max rated power is 40. he said he did not like it, but did not say why. in know that...
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    changing driveshaft hard or easy?

    for 1975-era evinrude v4's. i may find myself needing or wanting to change the driveshaft on my 1975 v4 evinrude 135hp. what i want to know is, will i need special tools or special measurement equipment and/or shop presses and all to get the the shaft and swap out the new one. for...
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    buy engineless whaler?

    i don't know for sure if i'll ever do this or not, but does anybody know if you can buy a new boston whaler, smaller model, like a super sport 130, [13 footer], without a motor. since, well? i already have a motor for it. i've never bought a new boat, in fact, a year ago, i'd never even...
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    '75 135hp worn driveshaft splines on top

    bought this boat last fall, and it runs like a top. still, i decided to drop the lower unit and change the oil and the water pump as a preventative measure...turned out to be a waste, because the impeller and oil were in great shape. oh well, now i have peace of mind. that was all fine...
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    small whaler transom heights?

    was perusing the whaler web site as I'm interested in their smaller hulls, 13 and 15 footers, though I'm not going to pay what it costs for a new one. I have a 20" 50hp evinride that has no boat to push around. it's the light (180lbs) 1975 versio that's well below the max engine weight for the...
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    overheat alarm testing, '75 evinrudes

    i now own two 1975 evinrudes, a 135hp and a 50hp. just from reading various random posts here, i'm thinking these hombres have some kind of audible overheat warning system, and that it is associated with some kind of tan wire. couple of questions: 1] is the warning horn inside the engine...
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