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  1. K

    No start problem on Nissan NSF 9.9B

    This thread was called "ABS - Auto By Starter.. how does it work?". I changed the title in case anyone was searching for help with a no-start issue on these motors. I picked up a NSF-9.9B and could not get it to start. Checked everything, cleaned carb, replaced plugs and could not get it to...
  2. K

    9.9/15/18 vs the 15/20 four stroke Tohathu/Nissan/Mercury engines

    Are there any similarities or exchangeable parts on the 9.9/15/18 4S engines vs the current 4S 15/20? I understand the 15/20 have a slightly larger displacement (328 vs 351) than the older ones. The cowling and the lower unit look very similar, if not exact, but I've never seen them...
  3. K

    Nissan CDI failure mode?

    I have an NSF-5B that was converted to 6HP with a carb. It has been running flawlessly for a year. Was running it over the weekend and after about 15 minutes of almost full throttle (about 5200 RPM) I noticed it miss a couple times. A few minutes later it started losing power. We were...
  4. K

    Gluing PVC vs Hypalon

    I have a mid-90's Quicksilver RIB. I was told by several folks that it is PVC, so when I did repairs on it I used PVC glue (HH-66). Everything works great now and no leaks. However, I ran across some marketing material for Quicksilver from the 90's. They show what appears to be my boat...
  5. K

    NSF 9.9b compression

    I have a new-to-me NSF9.9B, serial 10430, shortshaft estart tiller. I have had several 4/5/6 4-stroke Nissans, but this is my first twin cylinder. I don't yet have a service manual, but will get the factory one soon. Checking everything over before I go and try to start. It only...
  6. K

    3607 Air Conditioning

    I have a 1983 3607 and am thinking about adding A/C to the boat. I'm looking for pictures that others may have on the installations on these models (year could be different though). I know they were offered with three units, usually a 12k unit in the aft cabin, a 16k unit in the salon and...
  7. K

    Flushing adapter use for NSF 4/5/6

    Curious about this. Reading through the manual, I was looking at the use of the flushing adapter and wondering if I could use this instead of trying to dip the motor in a trashcan to run it at home. At first I was thinking that the flush adapter is only for use when the engine is not...
  8. K

    NSF4/5/6 timing

    I have a NSF4A motor but the manual for a NSF5. Thought these motors were virtually identical but when I went to check the timing on the NSF4A, I get a constant 25 degrees. My manual states that the timing should be at 5 dBTDC at idle and climb to 25 dBTDC above 3500 RPM, as shown on the...
  9. K

    Nissan NSF4A Water intake strainer

    I bought a NSF4A that had the anti-cavitation plate and skeg broken. I picked up another lower housing (used) and was swapping parts when I started to notice differences. Apparently the housing I bought was from a newer motor. The original anode was round, the new one was rectangular. No...
  10. K

    Nissan 4/5/6 HP engines and revisions

    I'm trying to understand the differences in revisions over the years for the NSF4/5/6 engines. I have a 2003(ish?) NSF5B and a 1999 NSF4A. Other than the carburetors, what are the differences in the A/B/C versions of these engines? Are there parts that are NOT interchangeable through the...
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