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  1. Sea Rider

    Does this 2 stroke motor sound right?

    Are those spark plugs the ones without the metal bent portion as traditional ones ? if so, those spark plugs are intended to run constantly at 3/4 to full throttle, excellent for long cruising purposes. Have your tested the spark plugs whichever ones the factory recommended for said motor ...
  2. Sea Rider

    Question about DVA meter

    When testing Ignition Coil's outputs with an external DVA converter hooked to a digital meter while cranking or with motor running need to : Set meter to DC 500 volts scale, hook both external DVA leads (1) to their respective polarity on meter. Question : does it matters which converter's...
  3. Sea Rider

    Does this 2 stroke motor sound right?

    Seems to have back fire issues due to electrical components misbehaviours, how old are the spark plugs to start with ? go for a wot run and check if the motor revs good when at full throttle or misses. Happy Boating
  4. Sea Rider

    Thermostat housing hole.

    Some issues, Need to fully solve the fuel related issues, can you find a second hand fuel tank with traditional vented upper fuel cap ? When the combo runs with trim set at neutral independently if sits slight less or more than 90 deg with deck load well distributed, does the prop aerates ...
  5. Sea Rider

    Aftermarket stator for 1998 kawasaki 750 xi super sport

    Why don't you go per OEM Stator and CDI Kawasaki parts, could be costly but who said that jet skiing was a cheap water sport. Happy Boating
  6. Sea Rider

    Back to the same problem

    If in doubt, get a Service Manual for that motor and snych, link exact same per the factory Manual. With motor OFF and throttle backed up are all carb's butterflies remaining fully closed ? If not the idle rpm's will be much higher than should be, check. Happy Boating
  7. Sea Rider

    New here and need help

    Is max 5200 rpm what the motor achieved at wot or it's the Max Wot rpm range which are two different scenarios. Happy Boating
  8. Sea Rider

    Back to the same problem

    Welcome to Iboats, Is it possible to adjust CCW the main idle screw, the one that controlls all carbs to leesen the idle rpm displayed ? 2 stroke motors have erratic rpm behaviour at idle specially with installed digital tachs, don't know about traditional dial/needle ones. When gearing...
  9. Sea Rider

    100:1 mix ok in Yamaha 1999 3hp?

    100:1 might be fine for long trolling purposes, once opening the throttle up will need 75:1 or 50:1 if preferred. Happy Boating
  10. Sea Rider

    Thermostat housing hole.

    The purpose of the tach is to check if current prop is working properly running inside its min-max wot rpm range factory stated. Next time out check the idle and wot rpm with tach set to 1P1R and report. If reads half need to mentally double the reading, if reads double at idle not an issue but...
  11. Sea Rider

    Thermostat housing hole.

    What was the idle rpm reading while the tach was set to IPIR, if less than say 800-900 rpm the tach is reading as it should. Is it possible to use those PITA EPA fuel tanks with their caps not fully screwed it to avoid building too much internal tank's pressure ? The 50:1 fuel/oil ratio is 80...
  12. Sea Rider

    Thermostat housing hole.

    As long the 2 stroke oil used is TC-W3 the motor won't care which brand or oil type such as mineral, semi synthetic of fully synthetic you buy. As the oil gets more exquisite, the more it will cost. Mix 50:1 fuel/oil ratio. Don't need to try all the tach settings, just the last 2 recommended...
  13. Sea Rider

    1994 Yamaha 4hp 2-stroke tuning.

    Welcome to Iboats, Was the motor running properly, strong before the carb's rebuilt to start with ? Happy Boating
  14. Sea Rider

    New here and need help

    Welcome to Iboats, What's the min-max wot rpm range factory stated for said motor ? How loaded was the combo when achieved 5250 wot rpm ? Happy Boating
  15. Sea Rider

    Need the Prop Gurus!

    Issues that will contribute to make any motor not to run top : -Check that the remote control and throttle cable allows the carbs to open fully at wot. -Motor and transom are spot on height matched. -Motor isn't excessively trimed up or down, running on plane at neutral trim is ideal. -Hull...
  16. Sea Rider

    Thermostat housing hole.

    Some issues : If the motor idles smooth and even with 1.5 pilot's screws out turns leave them there. This adjustment it's only for idle, has nothing to do when the throttle passes idle setting and the motor starts working with the carb's high jets which are fixed, there's nothing to just...
  17. Sea Rider

    Need the Prop Gurus!

    To the OP, to avoid tech speculation, perform a compression test with a fully warmed motor and report the individual cylinder numbers achieved. I'm going to flip my desk's chair laughing out loud if that motor which has been totally rebuilt and has clocked less than 20 run hours dials high and...
  18. Sea Rider

    Need the Prop Gurus!

    If the prop was same as before the entire rebuilt means that motor was never before propped right to run towards it's max wot rpm range. Not all boaters props their combos right, some are content with the prop's water performance that's currently installed or factory deliver with if it were the...
  19. Sea Rider

    Saturn MC365 Catamaran - Set Up & Motor Suggestions

    OK, post some nice pics when the combo package it's on the water. Would suggest to buy a pressure gauge and inflate all air chambers to their factory recommended working pressure for the cat to perform as expected... Happy Boating
  20. Sea Rider

    Thermostat housing hole.

    It's a 3 cylinder motor and if it's the case the OP will need to adjust the firing sequence to : 2 stroke motor, 1 spark per revolution and if reads true wot rpm will confirm it's a 1 spark per revolution setting ? If reads exact same, that tach model it's not 100% compatible for a 3 cylinder...
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