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  1. M

    Engine won't reach max RPM under load

    It sounds like a fuel issue. Have you cleaned out the carburetors? Does squeezing the ball while or just before going full throttle make any difference? I suspect a plugged up main jet or stuck float, but also make sure you're getting good fuel flow at the motor and that any under-the-hood...
  2. M

    New (Out of Box) BF20D Over Heating

    If it's not peeing, don't keep running it until you figure out what's wrong, that's a quick way to wreck a motor. When you put it in the bucket of water, was the water level above the water pump?
  3. M

    Honda BF15 15HP outboard dies at full throttle

    I agree completely with the above, it definitely sounds like it's starving for fuel.
  4. M

    1986 tohatsu 9.9 carburetor help

    If I had to take a guess, I would say it's possible that something is clogging the high speed jet in the carburetor. I would personally start by taking it apart and just cleaning everything carefully. Look through the jets and be sure you can see light and they're not obstructed at all.
  5. M

    Cylinder Compression Incongruences.-

    Are you sure the head bolt torque is 30nm? Maybe double check that somewhere, 30nm seems pretty light for a head bolt.
  6. M

    First Tohatsu motor 9.9HP

    I can give you generalities. The pilot screw you're going to adjust until it runs nicely at idle and at small throttle openings (about 1/3 throttle and below). Generally speaking, turn it in all the way until it seats GENTLY, then turn it out about 1.5 turns as a starting point. For the idle...
  7. M

    Need Model number on 10 hp Honda outboard

    Tangent - What date in the USA did the 9.9HP designation become important (because many lakes started banning motors 10+HP)?
  8. M

    Cold start issue

    It is not unusual for a carbureted motor to need some choke and a little bit of throttle to keep it running for a short time after a cold start, until it warms up a bit. If it has been sitting for 5 years with gas in it then I would definitely clean the carburetors anyway, but even with a clean...
  9. M

    Should water be ejecting?

    Did you disconnect the shift shaft?
  10. M

    Combustion Problem?

    Have you tried what I suggested, see if you can make it idle steadily with the throttle, with the goal of determining if the idle is just set too low? I would agree with @pvanv that it's likely something is still plugged up, but double checking the idle speed setting is super easy and if that's...
  11. M

    Combustion Problem?

    Will it stay running with throttle but no choke? If yes, will it run at idle speed using the throttle to control it? I'm wondering if the idle is set too low.
  12. M

    Combustion Problem?

    If the slow speed circuits are plugged, then often you can keep it running with the choke and throttle. If you get it started with starting fluid, can you keep it running at all by giving it throttle plus the choke? If yes, then there's still something plugged up in the slow speed circuits...
  13. M

    Combustion Problem?

    A side note, make sure the bowl is actually filling with fuel.
  14. M

    Combustion Problem?

    Re-clean your carb, you've missed something and it's still plugged up. Pay special attention to any small passages and tubes, tiny holes, etc.. Compressed air and carb cleaner spray (wear goggles). If you have access to a hot ultrasonic cleaner then that can dramatically help to soften and...
  15. M

    Combustion Problem?

    For the compression test, you need to have the throttle wide open, otherwise the cylinder won't fill with air and you'll get a lower reading. For a leakdown test you also need to disable the compression release. While you're checking things, check the valve clearances if you haven't already...
  16. M

    Combustion Problem?

    He means that 60psi is after the compression release has let some of the air out, so it's not a useful reading. Most motors these days will have what's called a compression release, which lets some of the air out of the cylinder to make the pull rope easier to pull. The mechanism turns itself...
  17. M

    Combustion Problem?

    Get a fire extinguisher and a can of starting fluid. Open the throttle, spray in some starting fluid then try to start it at idle or with some throttle. If it starts and runs for a moment then mechanically and electrically you're likely good-enough to run and you most likely have a fuel...
  18. M

    Honda BFP60A Will Not Go Down

    Does it click or make any noise at all when you hit the button? Is the manual latch in place and holding the motor up?
  19. M

    05' Tohatsu 15 4 stroke. Starts and dies within seconds.

    Just to file this away for future use; having had a few engines with a cylinder full of oil over the years, if you keep steady firm pressure on the pull rope (or kick starter) the oil will eventually escape the cylinder, some of it around the piston and some of it out the exhaust if it has a...
  20. M

    15hp Tohatsu - issues to look for

    Thanks for the info. Where are you located out of curiosity? I'm in S. FL.
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