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  1. M

    What's wrong with my new 6hp Tohatsu?

    Many single cylinder motors have it. My lawn mower has it, my motorcycle. Glancing briefly at the parts diagram for the Tohatsu, the drawing of the cam sprocket looks like it could possibly have the little weights on it, it's difficult to tell from the drawing. Maybe you can find some...
  2. M

    What's wrong with my new 6hp Tohatsu?

    Check to see if it has an automatic compression release to make starting easier, common on lots of 4-stroke motors. If it does then you'll need to disable that before any compression or leak down test. The most common implementation is a small spring and weight mechanism on the camshaft. When...
  3. M

    NSF18b2 oil light issues

    Does that motor have an oil pressure relief valve, to be sure oil pressure doesn't get too high? If yes, maybe that has gone bad and is leaking a little oil when it shouldn't?
  4. M

    What's wrong with my new 6hp Tohatsu?

    When it stalls or won't start hot, pop the fuel cap off (if using the built-in tank) to let some air in, or give the bulb a squeeze if you're using a remote tank. See if that helps. One day I had a similar issue, while trolling very slow the motor started wanting to stall and then would not...
  5. M

    Honda 50 hp stull when passing from R to N

    I have no idea if these are any good or not, but google turned this up: https://www.emanualonline.com/Marines/Outboard-Engines/Honda/BF-Models/BF50.htm
  6. M

    Tohatsu Repair Products?

    I don't think I would buy anything Evenrude at this point, unless you get a crazy smoking deal. BRP will no longer be manufacturing Evenrude motors going forward, so it's iffy whether they will keep producing parts for older motors or just sell of the inventory they have. I bought a little...
  7. M

    Honda Idle Problem

    If you don't mind spending a few bucks on a new tool for the garage, I've had fantastic luck with a good ultrasonic cleaner. You can get a small one for around $100 on Amazon or eBay. I've had good luck using both simple green + water, and WD40 as solvents. So far I've used it with old...
  8. M

    Cylinder Compression Incongruences.-

    An old motor with very few hours; if it has been sitting a lot it might have rust inside. Can you get a bore scope in through one of the spark plugs holes and take a look? If it doesn't have a ton of value (not worth a rebuild), maybe just put a lot of oil in the gas and run it for a bit and...
  9. M

    Honda Idle Problem

    Small 4 strokes have tiny low speed jets. Seafoam isn't going to help. As said above, you need to take it back apart and verify that none of the tiny little jets or holes are plugged up. Shoot carb cleaner through it followed by compressed air (wear goggles!). If you have an ultrasonic...
  10. M

    NSF18b2 oil light issues

    If you want to run it longer before a rebuild, you can try thicker oil to see if it will hold pressure better. Maybe 10-50 or 10-60.
  11. M

    Fishermen vs divers - right of way question (S. Florida)

    My goal is to stay legal, so I'm looking for someone who might know a bit about the laws in FL. As this place becomes more insanely over populated, confrontations between divers and fishermen are occurring much more often. Both want to be at the same location, where the fish are. Here we are...
  12. M

    Adding an alternator to 6HP Tohatsu

    Has anyone added an alternator to a 6HP Tohatsu, and was it strait forward? It seems they sell kits but I would love to hear from someone who has done it, or seen it done. This would be great to run some lights on our jon boat so the kids could fish at night.
  13. M

    Where is the salt hiding?

    I've been using my 6HP Tohatsu in salt and despite my best efforts to flush and rinse it, after it dries I get salt crystals appearing on the seam between the lower unit and leg, and around the ring that holds the gears in the gear case. I've never had this issue with any other motor, can anyone...
  14. M

    Tohatsu 6HP, hot exhaust

    I've got a 2012 model year Tohatsu 6HP with 54 hours on it. The water pump and thermostat in it now were installed about 1 year ago and have about 10 hours on them. The motor runs great, but the plate on the bottom of the motor that must be where the exhaust runs, gets HOT. We just started...
  15. M

    Barnacle Buster for outboard flush?

    Has anyone used Barnacle Buster to descale an outboard motor, and if so did you remove the anodes and what was your result? I've got a 99' Honda that is still running great and not (yet?) overheating, but after 20+ years in salt is starting to show signs of build-up. Chunks of free floating...
  16. M

    Replacing the needles in a carbureted USA model 50HP Honda

    Can anyone tell me where to find the actual serial number on a 50HP Honda? I've got he frame number and model number, but I can't find the "serial number" anywhere. Here's the motor info: And I'm trying to buy a part that is different depending on the engine serial number, but I can't find...
  17. M

    Removing / replacing non-adjustable fuel screws - 1999 Honda 50HP

    Can anyone tell me how remove the non-adjustable fuel screws and replaced them with adjustable fuel screws on a Honda 50HP motor (same as the 40HP)? Do you have to break off the screw head then remove the rest with an extractor? The space is too small to get in there with a dremmel to cut the...
  18. M

    Rubber bits clogging my carburetor - Honda 50HP 1999

    This is part warning to others with older motors, and part curiosity to know if anyone else has had this problem. I had a sliver of rubber clog the float valve on one of my carburetors, preventing that cylinder from getting any gas. As best I can tell, the sliver (pictures below) appears to be...
  19. M

    Why so anxious to close threads?

    I'm just curious why it seems moderators are so quick to close threads here? For example, I found a thread about a motor that I'm interested in and asked the thread starter about it. The same day, before the TS even had a chance to respond, the thread was closed citing that the guy had not...
  20. M

    Honda 50HP Cooling system issue (1999)

    I'm looking for someone who is very familiar with the 50HP Honda cooling passages for help on how to clean debris out. I've got a 1999 50HP Honda that suddenly developed an intermittent pee stream problem. The stream has good solid pressure, then suddenly the pressure drops very low and...
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