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  1. Sea Rider

    Thermostat housing hole.

    Does the bowl's screws have jets ? are supposed to be simple screws with a washer. Assume you haven't removed any pilot screw (fuel/air mixture screw). Don't remove them if the carbs are not going to undergo an internal preventive maintenance. Can work that latter if plan going that route...
  2. Sea Rider

    Run Carb Dry or Not.-

    Anyone is doubting that E8-E10 will not screw all the internal metal parts a carb works with along rubber parts such as fuel pump's diaphragms if fuel sits for too long time on them. Not to mention the carb's outside color discoloration and fuel filters as well that will experiment with E fuels...
  3. Sea Rider

    What 15 carb fits my 9.9?

    Went that route, converted a 96 Evi 9.9RED to a 15RED, besides the carb swap also had to swap the 15 Leaf Plate Assembly or Reed Valves. Their internal fuel passages are bit wider than the 9.9 ones so to stand more fuel intake from the 15 carb. Happy Boating
  4. Sea Rider

    Thermostat housing hole.

    If the nasty stuff was not stopped at the small fuel filter definitely lays inside the carb. Open all 3 carb's bowls screws and check what comes out. Place a small container under each bowl to collect the outcoming fuel and check its condition. Report what was found. You should always flush...
  5. Sea Rider

    1985 Evinrude 50 - Prop options for a noob...

    The wot rpm range for said 50 HP is 4500-5500. So a 15 pitch at 5400-5700 wot rpm is right for that application and current stated load, throttle less if plan boating with just 2 souls on board. Just for the record : Test combo again on flat calm water cond with new 15 prop, distribute deck...
  6. Sea Rider

    Run Carb Dry or Not.-

    Don't have non E fuels any more due to being a lucrative business growing sugar cane, installing E plants and selling the by product to gasoline distributing Companies. A faster way to burn all the fuel leftovers if any inside the carb when the motor is about to die of fuel starvation is to...
  7. Sea Rider

    Thermostat housing hole.

    Any round hole located somewhere it's part of the motor design, so the thermo is located to a side and not on top of the cylinder head as found in larger motors. If wanting to clean any hole, hidden passage buy a can of CRC carbon remover and spry an overdose with the provided red cannula. Sat...
  8. Sea Rider

    1985 Evinrude 50 - Prop options for a noob...

    Interesting prop data and thanks for posting, very few does so. What's the min-max wot rpm range factory stated for said motor ? Is it 5000-6000 wot rpm ? Test combo again on flat calm water cond with a new 15 pitch prop, distribute deck load evenly and set trim to neutral once combo is on plane...
  9. Sea Rider

    Honda BF90D Flush Port Clogged

    Yep, pure sand should cross through all the water passages and exit out motor, but if being a salt motor use it's a different story. Now imagine how salted already are all the internal water passages.. Happy Boating
  10. Sea Rider

    Compression test low on BF100 honda mid 80s

  11. Sea Rider

    Thermostat housing hole.

    To know the history behind the combo, owned it since new or it's a second/third hand one and previous owners have not performed a deep carb preventive maintenance which could account for fuel spills. Carbs usually have a venting hole built on the upper carb, could be located around the mixrure...
  12. Sea Rider

    Honda BF90D Flush Port Clogged

    Is this a fresh or saltwater motor use ? Poppet valves are usually a 3 parts component, very simple to remove with the right tool and cleaned soon after, no need to change it unless shot. When the Owner's Manual says to flush through the flushing port installed with motor OFF will need to...
  13. Sea Rider

    Thermostat housing hole.

    That's a 3 carbed motor, right ? If so, which carb has fuel spills issues, the upper, middle or lower carb ? Happy Boating
  14. Sea Rider

    Run Carb Dry or Not.-

    It all depends on your boating location, boating the whole year round or juts in summer, spring in colder climates. The worst you can do to a 2 stroke Tohatsu motor is leave the entire fuel system full of fuel specially if running E blended fuels for long time periods. To avoid screwing all the...
  15. Sea Rider

    Honda BF90D Flush Port Clogged

    Have you tried flushing the motor through the flushing port with a hose adapter on muffs while the motor idles ON. Or you could flush the motor OFF through the flushing port but will need to remove the thermostat and bolt thermo cap, cover back for the water to recirculate across the whole...
  16. Sea Rider

    Thermostat housing hole.

    Some issues : Is the carb losing fuel through the throat ? happens when priming the bulb till firm or while running. I use thick grease at both gasket's sides, that way will be posible to remove the thermo any time to perform a preventive cleanig maintenance without damaging the gasket. Works...
  17. Sea Rider

    Compression test low on BF100 honda mid 80s

    Test Compression with a second compression meter and check if both dials 60 PSI. If suspect that's due to rings issues spray liberally a blast of CRC carbon remover through the carb's throat, throats if having more than one carb, follow can instructions. This amazing product should take care of...
  18. Sea Rider

    6 HP Tohatsu 4-Stroke Driveshaft binding

    Remove both lower 47 bolts, spin flywheel with hand, if nothing turns there's a huge seizure between crankshaft/drive shaft and 47. But if 47 spins freely the seizure it's between the crankshaft and the drive shaft. The upper 47 has many rubber oil seals such as 13-48 that will be difficult to...
  19. Sea Rider

    Kicker motor

    Welcome to Iboats, Need a long shaft motor propped right to run towards its max wot rpm range. Seen kickers mounted on both sides of the main motor, don't know if will make any performance difference. Happy Boating
  20. Sea Rider

    Should you polish a Prop or not

    If the hub is the outter portion where the prop shaft exits, it's the least part that will benefit from such procedure. A hull well polished and waxed will certainly benefit much more.... Happy Boating
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