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  1. M

    EPA mixture screw covers 2003 BF50

    Interesting, I wonder why they changed that between years. Let us know how the new ones work!
  2. M

    Hit starting wire bundle with screw.

    Might have cooked something. First check for not-obvious fuses. Are there any under the hood? Second check for spark while cranking. Next check the continuity of the wires that you hit, make sure one or more weren't actually severed. Is it a fuel injected motor, or carbureted?
  3. M

    Intermittent beep - Honda BF115

    How old is the motor? I'm not sure all models or years will automatically slow down if they overheat. Also did you check the oil pressure?
  4. M

    Best method to drill out a broken off bolt

    Thanks, the tips here for the center drill, to be patient and the limited depth of the hole were golden. All 3 tips were instrumental in success. The motor is wet in the pics because we were working in the rain. We took it off shore today and the motor ran great (also put in a new timing belt...
  5. M

    Best method to drill out a broken off bolt

    In case this helps the next person, I think we had success with the helicoil. I put a few drops of Rydlyme in the hole using a syringe, to remove the corrosion, that was a mistake I think. First it held and started fizzing like alkaseltzer, then suddenly the rydlyme disappeared and started...
  6. M

    2010 25 toh 4-stroke head gasket help

    The leakdown could potentially help you verify a head gasket issue before taking it apart (or other leak into the cooling passage issue). When you apply the air to the trouble cylinder, you could remove the thermostat and listen for air leaking into the cooling passages. Compare to what you...
  7. M

    Best method to drill out a broken off bolt

    Quick follow up - the new bolts arrived and they thread nicely into a 6x1 die, so for the next person doing this, the thread must be 6x1. :)
  8. M

    Best method to drill out a broken off bolt

    Does anyone know the pitch of the thread on those bolts? I ordered new bolts but they're not here yet and I would like to order the helicoil too so it all arrives at the same time. Update on the stuck bolt; I used a center drill to poke a hole right in the middle, the outside of the center...
  9. M

    Tohatsu 4hp fuel selector switch stuck

    I guess it depends on what you're expecting from it and what price he's asking. That looks like an older motor that has definitely seen time in salt, but from the short video it appears to at least start OK and wasn't smoking. It is not possible to tell from such a short clip if the carburetor...
  10. M

    Tohatsu 4hp fuel selector switch stuck

    The fuel selector is likely an easy fix, just swap the part. However that selector being stuck is a sign that the rest of the motor may not be well cared for. Have it looked at by someone familiar with motors.
  11. M

    Best method to drill out a broken off bolt

    I'm thinking about lightly tapping in one of these bearings to keep the bit strait during the pilot hole. I measured the hole in the plate and it's ~6.5mm, these bearings are 6.5mm OD, 3mm ID...
  12. M

    Best method to drill out a broken off bolt

    Thanks for the tips and warning, I'll try the tape around the bit. I was also looking at a small bearing or collar to insert into the hole that I could pass the drill bit through, to hold it in the center for the initial hole. I'll order some replacement bolts and measure the length, then mark...
  13. M

    EPA mixture screw covers 2003 BF50

    Here's the part number I replaced mine with on my 99' 50, and the tiny bolt remover still attached to one of the screws I removed (notice the broken off heads). No need to remove the carburetors for the purpose of removing these screws (but yes if you're going to clean then more), get one of...
  14. M

    Best method to drill out a broken off bolt

    Can anyone give me your favorite method for drilling out a broken off bolt? The part that makes me nervous is doing it free-hand, not under a drill press. Are there any tips or special tools for trying to keep the drill bit centered? Maybe a collar of some sort I can slip around the bit that...
  15. M

    Nissan NSF25A running at 2400 rpm @WOT

    Not a bad idea. :)
  16. M

    Nissan NSF25A running at 2400 rpm @WOT

    Talk to the shop that does the prop work, they will be able to give you better answers than you'll get here most likely. Make sure it's a shop that specializes in props and not just some guy.
  17. M

    Honda BF7.5 won’t idle, so far I’ve

    A hot ultrasonic cleaner can do wonders for those tiny fuel passages.
  18. M

    Tohatsu MFS9.8B, 2019 era, any gotchas?

    Does anyone know of any gotchas or common trouble areas for the Tohatsu MFS9.8B (bought new in 2019) motors? It's listed for sale locally as-is. The current owner bought a boat and this motor came with it, he didn't even try to start it and has no idea if it runs or not, he just set this one...
  19. M

    Tohatsu 6 hp 2022 plastic pieces

    https://www.boats.net/catalog/tohatsu/outboard/6hp
  20. M

    6hp 4 stroke tohatsu (mercury) won’t reach WOT under load

    5000rpm at 5mph sounds like the motor is indeed likely putting out it's rated power but that's just not enough to make that boat go. If you've got a lot of weight in the back, try moving some weight forward. Small boats with small motors are very sensitive to weight bias. If it helps...
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