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  1. K

    NSF9.9b overheat sensor option?

    Just looking at the owner/operator manual for the 9.9B and I ran across this section that refers to an 'overheat sensor option'. Never noticed that before. How do you know if you have this option, and can you add it to a motor that doesn't have it??
  2. K

    HONDA BF8A shares parts with?

    Just picked up a Honda 8HP BF8A and wondering what other engines it shares parts with. This is my first foray into Hondas but I've been running Nissans and Tohatsu's for a while now. Do any of the other small Honda engines share the same parts with this motor like the Tohatsu's do (like...
  3. K

    Sound "proofing" a small outboard?

    So I did run it on the lake and it distinctly makes it sound different. I would describe it as sounding like "RRRRRRRRRRRRRRRRRRRRRR" rather than "EEEEEEEEEEEEEEEEEEEE" while I'm up on plane. There is not a huge difference, but it is noticeable. Enough that I'm going to go forward and do this...
  4. K

    Sound "proofing" a small outboard?

    Picked up another NSF6A2 yesterday and while working on it (needed carb cleaning and impeller), got a wild hair idea about seeing if I could make it quieter. I have a similar motor we use on the dingy and when putting around the marina it's louder than some of the other folks (who are mostly...
  5. K

    Graphic for "what year is my motor" questions

    Ran across this graphic in an older sales brochure for Tohatsu. Shows what year they introduced their different motor lines. Thought it might be interesting for some folks, but as Paul always says, if you're looking for any service information then your actual model number is much more...
  6. K

    NSF-6A temperatures

    Here's the thing... for the last couple years it has never run "right" but also has this intermittent issue where it quits and you can't restart for 5 to 10 minutes. It used to be VERY easy to start, often on the first pull. For the last couple years you'd have to get the choke procedure...
  7. K

    4S Nissan/Tohatsu/Merc 9.8 and 9.9

    Do these 9.8 and 9.9 motors share any parts or are they completely different motors?
  8. K

    Know anything about RAIDER inflatables?

    Looking for information on inflatables made by RAIDER. I've seen a couple for sale and wondering how they compare to the big name brands like Zodiac, Avon, Aventus or any of the other well-known brands. I've never heard of them but I've seen a few for sale. Wondering how they hold up or if...
  9. K

    How do you measure an inflatable??

    How do you measure the length on an inflatable?? I have (what I thought, and what's registered as) an 8'6" inflatable with a hard floor. I always thought it was measured either on overall length or from the transom to the bow. Yesterday I measured mine and it comes up as 7'6" from transom...
  10. K

    Tohatsu 4hp 4 stroke 2008 modle

    I pulled it out of the old carb. You need to pull the screws out of the 'butterfly' and remove the butterfly. Then remove the screw on top that holds the bracket just under the spring. You can then slide the old belcrank assembly up and out of the carb. When you put the replacement in...
  11. K

    NSF-6A temperatures

    Have a NSF6A and noticed a couple things while running it today. 1) While running under various loads up to 1/2 throttle tied to a dock, I was measuring temperatures around the engine with an IR gun. At low speeds everything was around 140 or maybe slightly less), but when I ran up to 1/2...
  12. K

    MFS6C ignition

    Have a friend with the Mercury version of the MFS6C, and it appears he's having a no-spark condition. Other than the oil pressure and kill switches,is there anything that can prevent spark on these integrated units? I've got the older versions with separate cdi, ignition coil, exciter and pulsar
  13. K

    High Thrust prop for the MFS4/5/6 "review"

    I had put one of the "mouse ears" high thrust props on my 6HP motor so I could plane out on a loaded up inflatable dingy. It has worked very well and was a big improvement over the stock prop. This past weekend we were headed back into the marina as a storm was approaching. We were getting...
  14. K

    Threads for the oil pressure switch on MFS4/5/6 or NSF4/5/6

    I have a Nissan NSF5A and looking to hook a pressure gauge up in place of the oil switch to see what the pressure is at hot idle. I'm getting an intermittent stall and the last couple times I saw the oil light blinking as it was starting to die. I'm wondering if it's a switch issue or an...
  15. K

    MFS4CD water pipe assembly Replacement the t

    Yes, it is very easy, but the power head does need to come off, per Paul's statement. Here is what it looks like under the powerhead and this shows the bracket midway down the housing the the waterpipe needs to run though (and the correct hole for it)
  16. K

    Tohatsu/Mercury 8, 9.8, 9.9, 15, 18 and 20 4S.. whats what?

    Ok, I know that some years (98-2003ish) the 9.9, 15 and 18 were the same motor, with the exception of carb and cam It appears at some point they made a 9.9 version of the 8HP but then made the 9.8. Then about that time they dropped the 18 and then the 15 and the 20 were the same, except for...
  17. K

    20HP Merc slips INTO gear when revving

    I have a ~1980 ish (not sure exactly, could be 81 or 82) 20HP Mercury 2 stroke that I got from a friend and have been 'rebuilding'. Cleaned carb and fuel pump, put in new impeller. Started it a couple times and it runs pretty good. Still needs some adjustment to idle smoothly. However...
  18. K

    NSF4A vs NSF4A2 Camshafts

    I was thinking all the camshafts in the NSF 4/5/6 were the same, but I stumbled on a parts list for the 4A/5A/6A series that looks like there were different camshafts for these models. Looks like when they went to the A2 versions the camshafts were all the same. I assume the same applies to...
  19. K

    Nissan CDI failure mode...part 2

    Well, my first thread got closed before the issue was wrapped up, so I'll pick up from here. In the first thread, I was having problems where the engine would die after 15 minutes of full throttle operation, or slightly longer at less than full throttle. Not a fuel issue, but something...
  20. K

    Anyone-glue the bladders?

    I have an older Quicksilver RIB that I'm working on. Got all the leaks figured out but it appears both bladders have been "compromised". Looks like both are detached from the top of the tube. Has anyone opened up the tubes and re-glued the bladders back in place? Wondering if there are...
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