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  1. Big Jay

    Johnson 50ESL72C Fuel Pump

    Good morning everyone, my '72 50hp started surging last night at higher rpm exhibiting signs of a failing fuel pump. I've looked around, but there seems to be no rebuild kit affiliated with my model available. Am I losing it?? Thanks in advance for a little direction here...
  2. Big Jay

    Upper / Lower Bearing Install

    Hey everyone, still working on my complete tear down / rebuild and I've just replaced my upper and lower crank bearings on my '69 Merc 1000ss (2685637) and I used a hydraulic press to put the new ones on. Now, I was just reading another thread where someone mentioned the need to heat them up...
  3. Big Jay

    Timing on a '69 Merc 1000

    Hello again, I've almost completed my fuel system overhaul and will soon be ready for the link n sync procedure. Now I've been reading up a lot in this awesome forum on how the timing recommendations in my original merc service manual won't do to well with today's fuel, though I haven't seen...
  4. Big Jay

    Couple of fuel system questions

    Hey guys, I'm just about to rebuild the 2 fuel pumps on my '69 1000ss as part of a fuel system overhaul and looking at my parts catalogue, it shows them as 2 different part numbers. My question is what, if any, differences are there between them? Also, what's the best way to go about...
  5. Big Jay

    50 Years!

    Hi guys, just wanted to share something here that I've found. Sometimes the ghost in the engine is real!! I can't help but wonder how many owners, mechanics and backyard tinkerers over the last 50 years have been stumped on this engine.. or worked on it and missed it! 1969 Merc 1000 Tower of...
  6. Big Jay

    Lower Crank Seal

    Hey guys, I picked up a spare '57 18hp for parts and have been cleaning it up so it's not nasty to work with later, as well as to make sure everything is ok on it. When I popped the powerhead off the leg however, I found this laying in the baffle: Is it as simple as replacing these 4 parts...
  7. Big Jay

    New Problem FD-12___VIDEO

    Anyone ever seen this? I go to accelerate, and about 3/4's of the way up I get a stranger shudder or hesitation like it's missing or something. It will sometimes do it to the point that it lasts a long time and will not kick in like it does in end of this video, I either wind up running it at...
  8. Big Jay

    '57 & '58 johnson 18hp parts swapping

    FD-11 & FD-12, hoping to use the '57 as a parts engine. Are there any differences I should be aware of ? I need to swap the swivel-brackets and motor-mounts, I had hopes of using the carb too, but upon closer inspection someone jammed the SS needle and caved the housing in :(.
  9. Big Jay

    :) Brought Home "Another" Motor Today :)

    The wife may kill me, but what the heck :rolleyes: . Johnson 50ESL72C, 1972 I believe. I can only hope this was a smart buy at $400, with a spare motor and a half, 2 spare props, and spare controls. Compression hasn't been tested, but it was a friend who sold it to me, I've ridden in his boat...
  10. Big Jay

    Tiller Twist Grip Tension Adjust

    '58 Johnson FD-12 18HP, the throttle seems like it could have a little more resistance/tension. My dad's Merc has a knob on the end you tightened down to increase the "drag", mine has a screw on the side of the grip but seems to have no effect one way or the other... is it just an assembly...
  11. Big Jay

    --video--1958 fd-12--running great--many thanks--

    I always see the long-timers in the forum requesting video... So here's mine :D
  12. Big Jay

    Motor-tone changes at wot

    Talking about my '58 Johnson FD-12 again, maybe this is normal, I don't know.... The only way I can describe it is if you voiced a flat vowel "Aaaa" and held it, this would represent the normal "tone" of the motor at WOT. Now, if while holding the "Aaaa" you changed it to an "Oooo" and voiced...
  13. Big Jay

    Wider Plug Gap for Trolling?

    FD-12 1958 18hp I've seen it posted here a couple times about gaping the J6C's to .035 instead on .030 if you do a lot of trolling to keep from fouling the plugs. I use this engine as a get-there unit as well as troll a lot with it, would this be a wise thing for me to do? As always, thanks...
  14. Big Jay

    Hole in Carb ???

    Model FD-12, 18hp Johnson.... This hole is leaking a lot of fuel when my engine is in the upright tilted position. (red circle at tip of screwdriver) It looks factory made... but I'm not sure, any ideas on what it is? Is it supposed to have a lead shot or something? It's not very big in...
  15. Big Jay

    Compatible Parts 'Rude 4441 / FD-12?

    Hello again, picked up a '51 14hp Evinrude for $25 because the prop looked like it'd fit my '58 18HP Johnson (which it did, tho it's a different shape). On closer inspection, the gear-cases look to be the same size. I cant find a parts list/catalog for the 'rude to save my life, I want to know...
  16. Big Jay

    Fuel Runs from Carb When Motor is Tilted Up

    I've posted about this motor before and had great help. This is something I've just noticed yesterday however... 1958 FD-12, after some fun in the sun I go to trailer the boat at the launch, but first I need to tilt the motor to the up position. I looked back as I clamped the trailer winch to...
  17. Big Jay

    '81 Johnson 9.9 Recoil Keeps Locking

    Model is J10RCID. Every time (or almost) I go to pull the cord, it is locked. It started slowly, I used to be able to adjust the throttle a bit and it would release for me and it would start. Now I have to remove the cover and hold back the red piece in the pic. Is there a quick fix for this...
  18. Big Jay

    Steering Bracket Stops Engine from Trimming....

    Hey everyone... Got a Big Twin 40 on a 14ft runabout, the steering is a single heavy line coming from the right side of the boat. Once it comes through the gunnel, it is mounted to a bracket on the transom... then an extension runs to the motor. Works great, if you don't need to trim your motor...
  19. Big Jay

    Propshaft Seal Question '58 18hp FD-12

    Hello again... I ordered a gear-case seal kit from ebay and instead of 1 large driveshaft seal, I seam to have 2 smaller ones. I've done some reading on here and have seen it said that others have had the same thing, however I found nothing on the orientation of installation. How do they go...
  20. Big Jay

    '64 40hp Big Twin

    Model 40402s, I have some unburnt fuel mix seeping from my front right hand starter motor mount bolt. The bolt runs through the intake manifold an maybe the reed block too... how bad is this? When I purchased the motor there was a build up of sludge I thought was axle grease at the time... now...
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