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    1987 3.0 GM engine oil

    With help of several, I believe I have successfully winterized my boat.. pulled plug on block and manifold, used my air compressor to blow it out to make sure,, all water is out...changed out drive oil and engine oil..... Manual for my 1987 3.0 GM said to use Merc Oil, or a good 20-40W or...
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    3.0 Alpha One WINTERIZATION?

    Ok boys.. had a blast in my first season with a "real boat".. Have learned a lot. Will get cold up this way soon.. My plans for winterization is to run 5 gallons of RV (pink) antifreeze through, maintain gas treatment, change outdrive oil, store drive in down position.. put my trailered boat...
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    Power Trim Motor Replaced- 30 weight oil ok?

    Was fishing on St Lawrence River on a trip, power trim motor in my 1987 Alpha One gave up the ghost. Fortunately French Creek Marine in Clayton, NY had a motor. With NYS tax,, the $600 price tag gave me gas!! put it in,,,I refused to pay the $22 for a quart of Power Trim Oil,, grabbed a...
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    3.0 Liter Mercruiser drive belt broke- Thank you UTUBE Guy !!

    If you need to replace your drive belt on a 3.0 in line 4 Merc.. mine measured 3/8 x40 V belt... here's the story, here's the fix.. Out on a NYS Finger Lake today fishing and enjoying the day, was having problems keeping my belt tight,, squeeking,, keeps slipping,, anyway,, was out on a NYS...
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    1987 3.0 Alternator Belt

    Anyone know size of this belt? is it 13/32x40 v belt? how wide is that belt? Seen belts from $3 to $20.. thanks.. Mine's been squeeking, tighten it its ok for while then squeeks again... need new lock nuts to bite in,,, everytime it squeeks that means its slipping and subject to increased...
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    Power Trim issue, Seloniod replacement??

    Pic of trim motor, pic of throttle,,, other day trim would not raise,, pushed button for trim or tilt raise,, clicking only, had to give the motor a whack and it started ok,,, that a selonoid issue? I found replacement seloniods for about $15 each,, there's two of em,,,one for tilt button and...
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    Alpha One Power Trim Motor

    Hi All.. yesterday was getting out of lake, pushed button on trim to raise drive,,click click click,,,nothing, trim motor got stuck. I tapped on the motor,,that released it, it worked as it should. I know these things can get stuck at times,, if I have to get another trim motor, what model...
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    1987 3.0 liter belt squeel at start up

    Hi all,,,had new serpentine belt installed this year,, first few times out fine, noticing now at start up a belt squeal noise, lasts only 3-5 seconds then quiets down to normal... should I look at adjusting the belt tension? likely stretched out a bit? what do you think? thanks
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    4 Blade Solas, that do you guys think

    I've got a 19.5 Cuddy (2500lb) with 3.0 liter inline 4 Mercruiser. I installed a 4 blade Solas 14.75 x 15 P, Jumps me up on plane in less than 5 seconds, my WOT RPM trimmed out at 4600 and 33mph. with 5 adults in boat... Im pretty happy with those numbers. I had a 3 blade Solas 21p...
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    1987 3.0 Liter,,,fuel treatment

    When I pick up my boat from shop this week,, (in for carb adjustment and cleaning) what's the best fuel treatment to add (if any) for my 3 liter engine to keep it running smooth,, or are additives completely unnecessary? The motors tuned up and running well,, lets assume that's the case...
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    1987 Mercruiser 3.0 liter FLOODING...wont start- STABLE?? help

    bought this boat this year, was tuned up at a marine shop before I bought it, compression good,,,has it out twice, last run three weeks ago,,hard starting, flooded carb,, got her going,,ran perfect rest of day,4500 WOT with 4 blade on my 19.6 cuddy,, every key turn,, boom,, started up first...
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    GTW limit, larger tire beneficial?

    Question for the crew.. Im running (2) 205/75/14's, 5 lug, each is 1760 on a new 3500lb axle. running my 19.6 cuddy around,, it's 2450 empty,,probably 2700 total, add trailer and Im still not to 3500lb.. Probably 300-400 short.. Would a larger tire -->ie 225/75D-15" Tire, Load Range D at...
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    Fulton Fender install, is it really that easy??

    Bought a 1987 20ft cuddy, w/ 3.0 merc, boat runs good,, trailer has been a headache.. its a s1985 horlandr galvanized with rollers,,I have relaced now litterally everything....except the frame now, that looks new,, I'm down to putting new fenders, why? I installed a new axel, in doing so my...
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    U-BOLTS close to frame

    Installed new 3500 axel, installed fine, u-bolts and nuts went on fine, used thread locker "red", no problems, bolts sticking up towards frame,, little to close for my taste, bout 2-3 inch clearance, dont want bounce to cause bolt hitting frame,, could cut off near two inches of bolt,,, any...
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    Carb cleaner, SEA FOAM?? or...............?

    What are your thoughts on Sea Foam? benficial or no? I had my 3.0 liter checked by marine mechanic and tuned up before I bought my boat.. does Sea Foam clean up carbs or not? is there any products recommended highter, thanks for input.. js
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    3.0 liter In-line 4 Carb cleaner ?

    I've got a 1987 Imperial 19.6 cuddy with 3.0 Mercruiser engine, recently took 3 blade Solas off in favor of 4 blade, HUGE difference in getting on plane,, 4500 WOT,, no problems,, only problem I had was flooding the darn thing at first start up.. My last outing found myself flooding it and...
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    Tires appearance- new axel spindle install

    Installed new 3500lb axel and spindles from Tie Down,, Venture is model, installed fine,, no issues at all ,new hubs rotors and surge break installed too.. new bearings, took for test drag, no problems, smooth.. noticed when looking at the tires from the front of boat they both appear...
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    Fender Extension help

    Hi all, bought a 1987 Imperial cuddy with galvanized Shorlandr, replaced mostly everything on trailer, new lights, surge breaks, all except axel, I kept blowing bearings and just replaced the axel too, put on 3550lb square- Venture by Tie Down on, new spindles are milled nicely to specs and fit...
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