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  1. J

    BF15D3 "Flash Valve"?

    Anyone know what the "Flash Value" does next to the thermostat? I just acquired this motor and put it in the water today. It has a small amount of water dripping from the hole pictured which is for the Flash Valve. "Small" as in it might take a whole day to collect a cup, 3 drips per...
  2. J

    2001 Merc 15 4 Stroke Low Oil pressure

    Thanks Swagonmaster, but the sump is still doing well when this issue is happening. However, problem solved today! Took the chance and pulled the power head off the leg. This issue was IMMEDIATELY obvious. If you compare my first post image 4 (the top of the leg picture) to the leg top...
  3. J

    2001 Merc 15 4 Stroke Low Oil pressure

    I'm working on a "new to me" 2001 Merc 15 four stroke. It seems to have oil pressure issues. Symptoms: Runs fine from cold for about 30sec then oil pressure drops and oil pressure warning (ignition system goes into limp mode too) Idles fine Crank case seems to have a lot of blow by air...
  4. J

    15HP Two stroke air filter

    Hey guys I've got a 1989 Mariner 15 MH, SN# 0B389700. This motor doesn't appear to have an air filter on it, nor can I locate a location to install one. Should this motor have an air filter and/or how is the air filtered? Air appears to be able to pass in through the lower cowl area into...
  5. J

    15HP Two stroke #1 not firing

    Magnets! That's it. They are indeed next to each other. The one pictured on the right, below, is actually loose when I gave it a nudge with my finger. The one on the left is fixed in place. I'm guessing I had some interference between stator coil and one of the magnets when I was fitting...
  6. J

    15HP Two stroke #1 not firing

    Crap, problem stayed on cyl #1 when I swapped coils. Took a couple pics of the side of the motor and where all the coils are installed if it provides any clues. You can see both magnets there and they seem to be in their place. Also measured back into the ignition control unit. It meters...
  7. J

    15HP Two stroke #1 not firing

    SN# 0B389700 I believe it to be a 1989 Mariner 15 MH
  8. J

    15HP Two stroke #1 not firing

    I've only owned this motor a short time, but the first time I ran it it seemed to run "good". I just had it in a static garbage can with water test, no real power laid down or on boat testing. I pulled the flywheel and installed a stator to add a charger to the motor. I bought an OEM Mariner...
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