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  1. Thread: nissan marine 18

    by pvanv
    Replies
    19
    Views
    73

    Re: nissan marine 18

    What do the plugs look like?
  2. Thread: nissan marine 18

    by pvanv
    Replies
    19
    Views
    73

    Re: nissan marine 18

    What is your actual model?
  3. Replies
    2
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    103

    Re: Tohatsu 4 stroke MFS 6

    Your shift coupler needs adjustment.
    22717
    It's #26 in the diagram. Full info in the Factory service manual.
    Unlock the bolt with a 10mm socket, move shifter to correspond with the actual LU gear...
  4. Replies
    3
    Views
    158

    Re: 15hp Nissan - Help

    When cleaning that carburetor be sure to clean the passage in the bottom of the bowl that feeds the accelerator pump and ABS chamber.
  5. Replies
    3
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    158

    Re: 15hp Nissan - Help

    Likely varnished carburetor. What is your actual model?
  6. Replies
    2
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    99

    Re: scored shaft on 9.8A3epul

    Very possibly where the UL shaft rides in the drive shaft bushing. I would just reassemble.
  7. Replies
    2
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    107

    Re: Tohatsu Parts in Mexico?

    Tohatsu is the manufacturer; others rebadge the Tohatsu motors. The MD90B is a solid design.
    You can find dealers at https://tohatsu.com/dealersearch/index.html
  8. Replies
    16
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    264

    Re: 2000 Nissan 25 stops running

    So an old impeller had a bit jammed in there, plus crud in the head by the stat. Maybe once that's all cleared, it will cool OK.
  9. Replies
    16
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    264

    Re: 2000 Nissan 25 stops running

    If the previous impeller disintegrated, blowing air back through the telltale might dislodge it. If corrosion in the head, etc, salt-away might help, but manual scraping after disassembly is usually...
  10. Replies
    16
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    264

    Re: 2000 Nissan 25 stops running

    How does the water pump look?
  11. Replies
    16
    Views
    264

    Re: 2000 Nissan 25 stops running

    346651100m
    water pipe l (20)
    $16.90
  12. Replies
    16
    Views
    264

    Re: 2000 Nissan 25 stops running

    Water pipe is brass or copper. If long shaft and drain clogged, could freeze and collapse water pipe. That was an issue with early 4-stroke 25 and 30 motors.
    Never do just an impeller. Always do the...
  13. Replies
    16
    Views
    264

    Re: 2000 Nissan 25 stops running

    You likely have an NS25C3. Year is irrelevant.
    If it is turning over, the motor is cranking. Maybe not starting.
    Is it a long shaft version? Was it stored outdoors? If yes to both, you may have a...
  14. Replies
    7
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    308

    Re: NSF15C to 20hp carb; running rich?

    Yeah. I would definitely look inside that carb, and verify oil level, and see what the plugs look like.
  15. Replies
    7
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    308

    Re: NSF15C to 20hp carb; running rich?

    The carb base gaskets will not cause a too rich condition. Verify oil level again. If you have a tach, you should see that the rev limiter is well over 5K RPM. A clogged fuel filter could cause a...
  16. Thread: Tldi90a2

    by pvanv
    Replies
    3
    Views
    204

    Re: Tldi90a2

    No, that's not normal. The fuel rail should hold pressure for several minutes, and slowly bleed off. Then, on restart, the FFP should pressurize the rail in a few seconds. So even if you disconnected...
  17. Thread: Tldi90a2

    by pvanv
    Replies
    3
    Views
    204

    Re: Tldi90a2

    What were your issues with fuel and starting? What codes did the motor show?

    The primer for an MD90A2 should firm up pretty well. If not, fuel is leaking and overflowing at the vapor separator, or...
  18. Replies
    1
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    169

    Re: tohatsu 8hp won't run but a few seconds

    Sounds like it's too lean. Especially if it needs choke to run. Did you mean fully choked, or choke fully off? Either need to do a more thorough carb cleaning, or the float/needle/seat may be wrong. ...
  19. Replies
    7
    Views
    308

    Re: NSF15C to 20hp carb; running rich?

    Which gasket? A leaking base gasket would cause a too-lean condition.
  20. Replies
    7
    Views
    308

    Re: NSF15C to 20hp carb; running rich?

    If the plugs are fouling, you are rich, so check them. Of course, always verify the oil level. If it's even a drop over full, you could get these symptoms. Aside from the pilot screw, the carb is not...
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