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  1. scout-j-m

    1988 Yamaha 30 Exhaust Ports

  2. scout-j-m

    1988 Yamaha 30 Exhaust Ports

    I have a newly acquired 1988 Yamaha 30 3 cylinder. It had a bad lower unit at the time of purchase. I bought a used lower last week and changed the old but clean oil and put on a new impeller. It’s pumping water fine and shifting good. But one thing I noticed is that the two slit exhaust...
  3. scout-j-m

    Adding tell tail to a 1959 35hp

    Im fixing up my dad's old 1959 35hp Evinrude. Compression is 110 and 115. Ive cleaned it up well and rebuilt the water pump and put in new gear oil. Still searching for a kit for the fuel pump and carb. In the meantime, I was thinking about adding a tell tail to this motor. I know it is...
  4. scout-j-m

    Yamaha 30hp Lower Unit Compatibility

    My motor is a 1988 Yamaha 30hp 3 cylinder long shaft. I am tearing down the lower unit after what was initially a broken shift rod and have now also found forward gear has a missing tooth. Before I commit to the time and cost of rebuilding I would like to search for a used lower in good shape. I...
  5. scout-j-m

    1988 Yamaha 30hp long to short shaft conversion?

    I've mainly had OMC motors along with a few Mercuries but dont have any experience with Yamahas. I recently found a 1988 30hp Yamaha Model# 30ELG for sale which is listed as having shifting problems. Surprisingly, LU parts are pretty reasonable so it may be worth a buy. My issue is that I need...
  6. scout-j-m

    9.5hp pilot ring question

    I'd have to look back at old posts to recall exactly what year my motor is but I believe it is a 1967 or 68 Evinrude 9.5hp. I pulled the powerhead out of the clamshell a couple of years ago to track down an exhaust leak and just got back around to working on it recently. I have replaced the...
  7. scout-j-m

    Experiences with the current model Yamaha 25hp?

    Hope this is the right sub-forum for the topic. Does anyone have personal experience with the new, lighter Yamaha 25hp? I would like to purchase a new 25hp within the next year or so and like the low weight plus other features these outboards offer.I just haven't seen many real world, non...
  8. scout-j-m

    1992 Plastic Topped 15hp Carb vs 1982 All Metal Carb

    Aside from the design, is the performance of the later model 9.9/15 hp OMC carburetor identical to the earlier models which are all metal? I have a 1992 9.9 Johnson which has a 15hp carb of the same year on it....when I got the motor it ran great but never idled well. Found out it had 1993 or...
  9. scout-j-m

    1992 9.9/15 HP Jumping Out of Gear

    I have a 1992 Johnson 9.9 HP with a 15 HP carb. It is relatively new to me but it is in great shape, gas good compression, and runs well. I have it currently mounted on a 1648 Alumacraft flatbottom with a 10" pitch prop which is a good load especially with an extra guy. I have put maybe around...
  10. scout-j-m

    Mini Jack Plates

    I have a 1648 Alumacraft with a 15" transom and as all of my OMC short shaft outboards sit on there, the anti-ventilation plate sits about 1 1/2" below the bottom of the hull. The boat is rated for a 35hp outboard. Can anyone tell me who all makes a manual "mini" jack plate aside from Bob's...
  11. scout-j-m

    Engine Height .. Please help!

    Mine is a true flat bottom jon boat with a short transom and shorter sides. Yours looks like it probably is heavier than mine. I would still imagine you could plane it with that motor though. Here is a picture of mine before I added any mods to it. Mine is rated for a 35 HP fwiw.
  12. scout-j-m

    OMC/BRP Made Al. Prop vs Al. Aftermarkets for 9.9/15HP Motor

    I recently purchased a 1992 Johnson 15hp. It came with an OMC 8" aluminum prop. Maybe saying it is a BRP prop is a better description as it is identical to the current style of Johnson/Evinrude props they sell here on iboats and I have no clue if thats what the OEM ones looked like back in 1992...
  13. scout-j-m

    New to me 1967 Evinrude 9.5hp Sportwin

    Since I last posted I became confident that my problems were an exhaust leak so I ordered a new shift rod boot and I separated the shell over the weekend and have the powerhead removed. The main exhaust seal looks more like the culprit now as it seems bent down in the front which is where I...
  14. scout-j-m

    1992 9.9/15 hp Idle Adjustment

    I recently picked up a nice little 1992 Johnson 9.9 hp with a 15 hp carb. I have a couple of the same motors from the early 80's with the gear/teeth throttle control and the side idle adjustment screw but this one has the cable system (which is one specific reason I got this one). I received my...
  15. scout-j-m

    1992 15 HP WOT Operating Range

    I have a new to me 1992 Johnson 9.9 hp with a 15 hp carburetor. It came with a 8" pitch 3 blade aluminum prop in good condition. I have only had it out on the water once on my 1648 Alumacraft flatbottom and it peaked pleasantly at 19 mph at 6800 rpms with two people and light gear. I was...
  16. scout-j-m

    9.9 hp Slow Speed Needle VERY HARD to Turn

    I actually did not buy the plastic top but I could have. I ended up purchasing the newer side style needle and spring and the plug and gasket for the location the old needle was. It totalled about $40. But here is a screenshot of the plastic top parts for a 1992 model from marineengine .com. It...
  17. scout-j-m

    9.9 hp Slow Speed Needle VERY HARD to Turn

    Thanks guys. I pulled the carb earlier along with the plastic top. Even with the plastic piece removed it was hard to unscrew the needle. I held the needle with pliers and untwisted the plastic cover. I then removed the bushing and threaded the needle back in....with no problem thankfully. The...
  18. scout-j-m

    9.9 hp Slow Speed Needle VERY HARD to Turn

    Just bought a nice 1992 9.9 hp last night. I checked compression (110 psi) when I bought it and we ran it on muffs. When I got home I put it on my stand and tested it in a tank. It runs great but I would like it to idle down a little lower. I tried to adjust the slow speed needle but the knob...
  19. scout-j-m

    Model 25802C Shaft Length?

    There is a 1978 25hp for sale online I may be interested in, model number 25802C. It appears to be a short shaft but I don't understand where that would be indicated in the model number. Can anyone tell me for sure?
  20. scout-j-m

    1967 9.5hp Sportwin Exhaust Leak

    I definitely have an exhaust leak as the motor does 15 mph at 4800 rpms in my large 1648 flatbottom with the cover off and runs excellent aside from idling as low and smooth as it should. With the cover on it, the rpms drop down 1000 rpms or so and the speed goes down a couple mph too. With the...
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