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  1. Sea Rider

    Yam 85 Losing Power.-

    OK, do you or FB happen to have at hand the 2 stroke Enduro 85B Service Manual, aside the stated working temp variations in which they act, is there any other indication about what happens when the TS detects a higher temp over its max rated for ? There were no light or audible indications...
  2. Sea Rider

    Prop Advice

    What's the max wot rpm achieved with 8 souls up on flat calm water conditions, no wild guessing applies LOL!! ? Will you always or occasionally have 8 souls on board ? As of right now 8 souls on board is a lot, with current prop will need to go full hammer down if wanting a fast hole shot then...
  3. Sea Rider

    Stator

    If both exciter and pulser coils are far away from their respective DVA electrical outputs factory stated for that precise NS70A2 model are defifinitely useless. I've seen shot electrical components but were a visual disgrace, that's severely rusted, pitted compared to the 3 electrical...
  4. Sea Rider

    Yam 85 Losing Power.-

    I don't think that Yamaha has installed such an extremely primitive system on ithis nice 85 HP Enduro B model which is a Commercial work horse, a loud buzzer would have been much better to hear than to see in plain daylight. Have seen none of the tiller or remote versions to have been factory...
  5. Sea Rider

    Running to rich

    Is the carb or carbs impeccable clean ? Happy Boating
  6. Sea Rider

    Stator

    If the trigger happens to be a pulse coil with other name should see a MIn 3.O DVA volts, the exciter coil must work with at least 130 DVA volst output. If you tested both while cranking with a standard analog or digital meter will need to have DVA measuring capabilities or will read erroneous...
  7. Sea Rider

    Yam 85 Losing Power.-

    Check first posted pic, shows where the Temp Sensor is located, when a different temp is detected triggers a signal to slow the motor down as not to overheat it, Don't know if that operation could be called a Safe Mode or not, will check with the Service Manual how it works and what it's called...
  8. Sea Rider

    Yam 85 Losing Power.-

    Does anyone have the slightest clue why would 3 spark plugs well gaped to factory specs came out with a notorious oddly uneven colored tips ? Upper plug shows a greenish looking tip, middle a redish looking tip and bottom one a black carbon looking tip, You'll be wondering if it's due to...
  9. Sea Rider

    Stator

    Did you measured the exciter's and trigger coil's output with an instrument or you assumed both weren't producing enough voltage output ? If with instrument what were the output readings in DVA Volts for each one while cranking ? Happy Boating
  10. Sea Rider

    Yam 85 Losing Power.-

    To start the long troubleshooting cleaned the internal and external fuel filters, were found 95% impeccable clean with excellent fuel flow from tank to carb entrance while priming the bulb hard. Removed the T-stat cover and brushed the t-stat with paint thinner including the valve pressure...
  11. Sea Rider

    Stator

    Wrapping any electrical component to factory condition it's a precise tech work, not suitable for most of us if not all, as a starter will need some sort of machine to hold the component in place while wrapping new magnet wire over the component. Take Paul's suggestion, contact CDI...
  12. Sea Rider

    So i decided to pull the powerhead off....

    Proper time to install an induction hour meter inside the motor to check run hours upon full restoration... Happy Boating
  13. Sea Rider

    Flushing 2019 115hp Yamaha 4 stroke

    Is it possible to install say a permanent fitting at the external flushing port with a hose that extends to side of transom in which can connect an external water hose at the other extreme for any time flushing ? This will solve the current precausious flushing position at the transom... Happy...
  14. Sea Rider

    Need help choosing a tach

    Now a days it's a Must have one installed for general idle-wot rpm readings, maximizing current props from factory delivered ones, checking how much the wot rpm decreases as load increases while powering different applications.? Happy Boating
  15. Sea Rider

    Suzuki DF90 - Steering Shaft frozen

    Any progress removing the stuck steering shatf from the swivel bracket ? Happy Boating
  16. Sea Rider

    So i decided to pull the powerhead off....

    And re-torque all bolts that have been previously removed on the entire powerhead to their factory specs soon after the motor's first 10 run hours upon full restoration. Personally would install new piston rings on all 3 cylinders. If reusing piston's rings each one must be reinstalled exactly...
  17. Sea Rider

    Flushing 2019 115hp Yamaha 4 stroke

    Welcome to IBoats, You're trying to flush the motor from the inside ? what about the external flushing ports those motor must count with ? Happy Boating
  18. Sea Rider

    Yam 85 Losing Power.-

    Scenario : a nice 1990 2 stroke Yam 85 HP motor losing power after running at high revs for some time. This motor has not received mayor preventive maintenance nor convenient flushing with fresh water soon after returning to Terra Firme. Will ask the owner if was running the motor with the...
  19. Sea Rider

    A few questions from a learner

    I've tached several portable to meduim range motors with factory delivered props and all revved slight over their min wot rpm range while powering small to medium length hulls with light loads, never tached one that over revved. It's a day/night water performance difference running a standard...
  20. Sea Rider

    A few questions from a learner

    Those are surely emergency props not intended for top speed, like emergency car tires... Happy Boating
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