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  1. K

    1988 50 hp force no spark?

    I had bought a used CDI stator that had 2 extra wires. Seemed to work fine once I figured out which wires went to what. The extra I just tucked away. The stator I bought was supposed to be for multiple hps., which is why I believe it had extra wires. I have basically the same force as you btw...
  2. K

    1983 Yamaha Mariner thermostat question

    No that was for the gaskets and exhaust cover. I'm asking specifically about what thermostats are compatible for this motor.
  3. K

    1983 Yamaha Mariner thermostat question

    My mistake, I double checked the serial number and my motor must be a 1983. It's a Yamaha built Mariner, 5hp. When I go on Crowley marine and look up the mariner version and the Yamaha version, they are identical, except they list different part numbers and there are basically no mariner parts...
  4. K

    1983 Yamaha Mariner thermostat question

    So I've recently picked up a 5hp Mariner built by Yamaha and I need a thermostat. It's pretty hard to find a thermostat replacement for this motor and I was wondering if I need the exact same serial thermostat for my motor? Or can I run down to any marine supply and find a similar size Yamaha...
  5. K

    CLR salt removal experiment

    No I guess I shoulda clarified. I meant salt as in mineral salts, not so much sodium chloride. So salts containing calcium or any other salts that would accumulate on the metal surfaces of the outboard. I chose the CLR cleaner because I knew it can be used to dissolve calcium salts and deposits...
  6. K

    CLR salt removal experiment

    Here is that previous exhaust plate after a lot and hour soak. The salt buildup definitely isn't gone but it has reduced a lot. Plus, it's much softer that previous (top). Here is an exhaust plate that has soaked for an equal amount of time then lightly scrubbed with a wire brush. The salt was...
  7. K

    CLR salt removal experiment

    In this photo, I had poured some undiluted CLR onto the exhaust plate. The CLR immediately began to react. After this however, I filled a plastic Tupperware with a 50/50 mix of tap water and CLR and submerged the exhaust plates (there are 2) for a few hours.
  8. K

    CLR salt removal experiment

    Here is an exhaust plate with some water passages totally loaded with salts
  9. K

    CLR salt removal experiment

    So I've been working on an 82 mariner I picked up for $100, and while I've been waiting for parts I decided to try and clean it up. I was told the motor was used in the salt and the oxide and salt buildup in the water passages was indicative of that. Lots of salt and oxide buildup. I wanted to...
  10. K

    Buy a 5hp Mariner with a blown head gasket?

    I did but I figured without a drill press I may not get precise enough holes on the dummy plate to match up anyways. Plus I messed up the last bolt hole trying to dig out a broken extractor, not so much by drilling the hole. If I get a drill press however I will do that in the future. That would...
  11. K

    Buy a 5hp Mariner with a blown head gasket?

    Welp I got all the bolts drilled and tapped. 5 in total. 4 came out real nice, I was basically able to pull the old steel threads out, which made lining up the tap super easy to finish the job. One I messed up pretty bad. I tried those EZ-outs. I'll tell ya, there's nothing "EZ-out" about those...
  12. K

    Buy a 5hp Mariner with a blown head gasket?

    Just drilled and tapped one of them. Idk how but I was able to drill out the stud so close the old threads came out like a curley fry. Just tapped it and now the bolt fits. Never tried that before. I'll try to the others and see how it goes.
  13. K

    Buy a 5hp Mariner with a blown head gasket?

    Well not a ton of luck on the bolt removal yet I've pushed the extractors to the limit on one already, so I'm looking at new options. Id imagine drilling and tapping is next?
  14. K

    Buy a 5hp Mariner with a blown head gasket?

    Yeah they are definitely metric. I'll be sure to use the little thread testers and try to get a good match. Really wish they used beefier bolts for this. Took nothing to snap these.
  15. K

    Buy a 5hp Mariner with a blown head gasket?

    Oh okay makes sense, great info. Especially on the busted bolts. The two head bolts I snapped I was thinking of running to a large hardware store near me to find replacements rather than finding OEM ones. I'll look from proper steel, as well as look for some taps or dies and aviation permanent...
  16. K

    Buy a 5hp Mariner with a blown head gasket?

    What does chase the threads mean? Aviation sealant? What will that do? Will it stop the bolts from salt welding again?
  17. K

    Buy a 5hp Mariner with a blown head gasket?

  18. K

    Buy a 5hp Mariner with a blown head gasket?

    Got the power head off. Broke 2/7 bolts though. They left me enough shank I think I can twist them out. This will make extracting the original bolts much easier.
  19. K

    Buy a 5hp Mariner with a blown head gasket?

    Man a drill press would be sweet for this. Yeah doesn't look too tricky to pull the powerhead. Looks like the bolts run in from the bottom? Two of the snapped bolts are just too obscured by the lower cowling to leave the powerhead on.
  20. K

    Buy a 5hp Mariner with a blown head gasket?

    Has anyone on here pulled the powerhead on one of these motors? I've done it to a 50 hp force but that's it.
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