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  1. Sea Rider

    Back to the same problem

    On muffs or on the trailer the motor will idle differently than when combo floats on water.... Happy Boating
  2. Sea Rider

    Merc's External 2 Stroke Oil Tank.-

    This 2 stroke Merc EFI 150 HP was running strong and then suddenly the alarm indicating Low Oil chimed in limiting the revs to 2 K. New oil was added to max level, close oil cap, started the motor till warmed up, but now doesn't run as strong as before. The Service Manual indicates that after...
  3. Sea Rider

    2 cycle stored for 20 years

    Won't find an OEM Tohatsu impeller broken in pieces, at the most hardened but still pumping a good water flow up powerhead. That's due to being made with an elastomer which is bullet proof compared to traditional rubber impellers found in different motor brands. But will be healthy to check the...
  4. Sea Rider

    2 cycle stored for 20 years

    Good to read that fired right up fast. Which type of watercraft and how loaded will be powering that motor ? Happy Boating
  5. Sea Rider

    M40d2 timing and carb butterflies not opening

    After adjusting everything as the service manuals suggests by the letter, remove the air silencer and check if the 3 carb's butterflies are opening exact same when at full throttle, surely won't find them at 180 deg as will be found in the 50 HP motor which runs with more time advance along...
  6. Sea Rider

    Nissan NS25C3 Timing Adjustment for 30hp

    Was the pic taken while the grip was at neutral and wot ? Happy Boating
  7. Sea Rider

    2 cycle stored for 20 years

    Depending on how much motor oil was squirted into eah cylinder, when cranking up the motor some oil will exit through the spark plugs orifices and some through the exhaust port, go down the lower leg and exit through the prop as well. Once sufficiently warmed up, go for a wot run as if stealing...
  8. Sea Rider

    M40d2 timing and carb butterflies not opening

    Welcome to Iboats, Follow the time avance adjustments to the letter as explained in the 3-4 cylinder manual pages 2-6 / 2/7. The timing vertical marks should be seen stamped side of the set ring and should match the vertical line formed between both crankcase's mating surfaces when the grip...
  9. Sea Rider

    1987 nissan 25hpruns great out of water but put under load rev or forward when throttling its missing but at idle its ok?

    The fuel bulb will only remain firm when correctly primed before the motor is started, provided that the float's needle closes firmly onto the fuel valve. Once the motor is running the bulb's built in pressure will cede and the fuel pump will start doing its sucking job.... Happy Boating
  10. Sea Rider

    Strange Motor Behaviour.-

    And the......bummer goes on. Installed a brand out of the box CDI unit, tested the combo lightly loaded and exact same. The motor hesitates 2 minutes after has been idling at neutral after a 20 minutes run at 3/4 throttle. It would be the last straw being the Exciter Coils the one that's...
  11. Sea Rider

    1987 nissan 25hpruns great out of water but put under load rev or forward when throttling its missing but at idle its ok?

    You replaced both fuel connectors ar both sides ? if yes, both o'rings are brand new. What's the condition of both male fittings where both connectors connects to, are they smooth to touch with no scratches whatsoever ? The fuel pump on those are heavy duty ones, the diaphragams are mylar made...
  12. Sea Rider

    1987 nissan 25hpruns great out of water but put under load rev or forward when throttling its missing but at idle its ok?

    If the carb was cleaned to a spotless condition, seems definitely an electrical issue. Check the spark with a spark tester at a dark place, the spark must be bluish, bright and strong. Ignition Coils fail over time specially after 33 years of use... Happy Boating
  13. Sea Rider

    Tohatsu Tiller Handle upgrade

    Lay 1 upside down, install 16 flat side against the underside of 1, there must be a cut on 1, adjust screw 18 rests there, pass 10 till exits through small left hole, once there secure right side with 14-15. Install 9, 11, 12, 13 at the left side. If don't need to lock the throttle grip, don't...
  14. Sea Rider

    Is It Worth it

    That I know 2 strokes motors doesn't have a decompression valve or whatever it's called. Check the spark with a spark tester, if at a dark place much better. The spark should be blue color, if other color the ignition coil is probably shot.. Happy Boating
  15. Sea Rider

    Thermostat housing hole.

    Have newer owned an hydraulic trim motor, all have been manual ones and know what works spot on and what doesn't. Not all boat's transom's borders angles are set flat at 190 deg that's why a motor will never sit at 90 deg if this scenario applies. no issues having tad more or tad less degs. The...
  16. Sea Rider

    Need the Prop Gurus!

    How do you determine if such motor is producing 115 HP output cowl rated ? What about if that motor has always been over propped before and after complete rebuilt and previous or new owner never knew about it... Happy Boating
  17. Sea Rider

    Need the Prop Gurus!

    Need to verify the max wot rpm achieved as loaded with a tach in good working order to get the max out of said motor and not screw it if suspicious that runs over propped... Happy Boating
  18. Sea Rider

    Thermostat housing hole.

    The Guide to Perfect Boating handles these tech aspects : Motor Health, Motor Decarbon, Motor/Transom Optimization, Prop Maximization with Tach. Decarboning is next to follow. If you need to run the combo way trimed up for the prop not to aerate your boat has an awfull motor/transom match...
  19. Sea Rider

    Does this 2 stroke motor sound right?

    Congrats, runs much better than before, now ready for a wot run in open waters as if stealing the combo... Happy Boating
  20. Sea Rider

    1996 Nissan 2.5hp won't rev

    When stripping down a complete carb, all removed parts should be placed one by one inmediately in a proper container, if closed much better. What would have happened if the OP could not find the part or did not know anything about whether such part was missing. Luckily was found and installed...
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