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    Power Tilt/Trim

    I have a 1983 Evinrude 50hp motor. I have found a guy selling a power tilt/trim unit that he says is off a 70hp, unsure of year at this time. Would that work on my 50? What info do I need to ask him to verify fit? If it does fit, do I need to change the hanging bracket for my motor or will it...
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    What Size Battery

    Went to pull my boat out of the lake tonight and some jerk stole the battery. My engine is a 1983 Evinrude 50HP. What size battery is recommended? I don't remember what size the one that got stolen was, it came with the boat so I never really paid attention. Thanks, Gary
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    Leaving Engine Tilted Up

    We have a pontoon with a 1983 50hp Evinrude on it. We have it moored at a dock on a local lake. I have been tilting the motor out of the water when we're not using it. Am I risking any damage to the engine if it's tilted up for an extended period of time? Thanks, Gary
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    Gear Ratio - 83 Evinrude 50HP

    I have a 1983 Evinrude 50HP, what is the gear ratio?
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    Effect of prop diameter

    I had a 11 3/4 x 17 prop on my 83 Evinrude 50 and was getting about 3500rpm so I know I need a lower pitched prop, probably a 13x11. I had a 12 1/4 x 15 prop given to me so I decided to try it to see what difference there was. I took the boat out today and it was still only getting to...
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    Changing Prop

    I have an 83 Evinrude 50hp with what I think is the original prop. I was given a Michigan Wheel prop and was wanting to try it. What do I need to do to switch props? Is it as simple as taking the old one off and putting the other one on?
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    1983 Evinrude 50HP - Carb to Which Cylinder?

    This may sound silly, but which carb goes to which cylinder? I would assume the top goes to the top cylinder and the bottom to the bottom cylinder. If I put my hand over the top carb the motor dies. If I put it over the bottom one it slows down but doesn't die. Now if I go and pull the top...
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    Engine Height/Depth

    We just repowered our 1977 24' Sylvan pontoon. In the process I rebuilt the transom. The old motor was a 28hp and they had the transom raised up one hole from being fully seated. My new motor is a 50hp and I fully seated the transom. I'm wondering if my motor is too deep in the water. I get...
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    Cracked Coil?

    I ordered a new coil for my engine and received it today. It has what, to me, appear to be cracks in it. The 2 cracks are directly opposite each other. I've attached photos. Do these appear to be cracks or just scratches in the plastic? The location directly opposite each other leads me to...
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    1983 Evinrude 50HP - Intermittent Loss Of Cylinder

    I started a thread after an issue with my engine losing power: http://forums.iboats.com/johnson-evinrude-outboards/1983-50hp-bad-coil-622103.html The night it happened we did not have the trailer so we docked it and went up to get it a few days later. When we went to pick it up it ran...
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    Aftermarket Ignition Parts - Which Brand?

    I realize this will probably open a can of worms...... It looks like I need to replace a cracked coil on my 83 Evinrude 50. iboats has CDI, Sierra and Mallory. Of course there is always OEM. Is one brand recommended over the others?
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    1983 50HP Bad Coil?

    We took our boat out today and it was running great. We stopped for ice cream and when we went back out I noticed it didn't seem to be running right. So I did some trouble shooting. I pulled the bottom plug wire and the engine died immediately. I pulled the top wire and it kept running. When I...
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    Prop for pontoon w/50hp Evinrude

    We have a 1977 Sylvan 24' pontoon that we just repowered with a 1983 Evinrude 50hp motor. The current prop is 11 3/4 x 17 and I'm getting 3500-3800rpm at WOT. I know I need to get a different prop but wasn't sure if the "rules" were the same for pontoon boat props. I need to get my RPMs up to...
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    Prop Selection

    I got our 83 50HP Evinrude out on the lake tonight after a rebuild of both carbs and replacing all fuel lines. Compression is good at 120 on both cylinders and spark is bright blue across 1/2". I am only getting 3500-3800rpm at WOT and suspect this is a prop issue. My current prop is a 11 3/4 x...
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    83 Evinrude 50HP No Top End

    I water tested our NTU motor tonight and I just want to double check what I'm thinking. I ran some seafoam in a gallon of gas through it yesterday and got it running better, but I was never able to run it at full throttle on the seafoam mix. (stupid me didn't think to use it on the lake today)...
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    '83 Evinrude Won't Stay Running

    I just put a NTU 83 Evinrude 50hp engine on our boat. I fired it up and it started right up but won't stay running unless I keep tapping the primer every few seconds. I'm thinking the carbs are needing rebuilt but was wondering if there was anything I could try before rebuilding?
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    83 Evinrude 50HP Tune Up

    I just bought an 83 Evinrude 50HP engine. It seems to run great but would like to do a "tune up" before using it. 1) What kind of spark plugs are recommended? 2) About how much and what kind of oil for the lower unit? Anything I'm missing? Thanks, Gary
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    1977-24' Sylvan Pontoon Repower

    In June '09 we did a resto on our 1977 Sylvan pontoon. Here's a link to my resto thread, unfortunately the pics are gone: http://forums.iboats.com/boat-restoration-building-hull-repair/1977-24-sylvan-pontoon-resto-324164.html Ever since then we've been wanting to put a larger engine on the...
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    1983 Evinrude - Add Tach

    I just picked up an 83 Evinrude 50hp for our pontoon. I would like to add a tach, but I'm not sure what kind to get or how to wire it. Is the wiring already in the harness? Thanks, Gary
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    Transom Rebuild

    I picked up a 50HP Evinrude for my pontoon tonight. While I have the motor off I am going to rebuild the transom. Wonder if someone could give me some tips on how to rebuild it. Thanks, Gary
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