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  1. Sea Rider

    High Altitude Rejetting

    At which high altutude will the motor be working at ? if not that high a prop maximization for the motor to run towards its max wot rpm range factory stated as loaded will work. If very high will need a carb rejet along a less pitch prop to compensate high altitude boating. Happy Boating
  2. Sea Rider

    Converted my 1999 2 stroke 9.9 to a 15hp

    What is exactly the reed assy difference between both, as per the spare parts manual both shares the same exact reed valve part, what's the physical difference, has slight wider, taller reed ports, the position of the reed valves ? If you install a less pitch prop definitely will see a hole...
  3. Sea Rider

    Tricks to hold flywheel to tighten nut

    Can you post a pic of such adjusting tool, having the same issue with a flywheel that can't be locked anywhere on the motor to torque the nut back to specs. Happy Boating
  4. Sea Rider

    Testing Carb Emulsion Tube for Leakout

    When primming the fuel bulb with arrow pointing upwards till firm, is there fuel spills seen around the carb ? If so, could be due to needle/seat gunked, bad float adjustment or middle carb's gasket shot or even a combo of the 4 mentioned issues... Happy Boating
  5. Sea Rider

    Cylinder Compression Incongruences.-

    Updates : Guess what, when removing both old pistons from the upper connecting rod to install new ones in, one of the lower piston's circular clip was missing, definitely fell off the piston's side and screwed the lower piston, piston ring and cylinder... The immaculate clean internal...
  6. Sea Rider

    Carburetor question on restoration I’m working on 1992 40 hp MSHQ Yamaha

    Don't worry Doug, I'd be ranting myself if experiencing same on my motors. Wanted to perform an experiment taching a 3 cylinder Yam 85 individually but my friend is out of town for quite a while. It's very difficult to fine tune a 3 and up cylinder carbs to work spot on and achieve a near...
  7. Sea Rider

    Carburetor question on restoration I’m working on 1992 40 hp MSHQ Yamaha

    Once all carbs are working right, you can decarbon the motor while running on muffs at home, check post 44 at lower page.. Happy Boating
  8. Sea Rider

    Tube pressure? And need new tube too

    If no pressure is factory stated better inflate that kind or any other inflatable water toy till firm, don't overinflate them specially if were built with unsopported thin pvc material. Happy Boating
  9. Sea Rider

    Slow Jet (aka Pilot Jet) on a MFS6B Carbeurator

    Don't ever remove anything with a small ball right in middle, will screw the whole carb... Happy Boating
  10. Sea Rider

    2003 Nissan NSD40B spark plug wire

    I'm not familiar with that motor model. If those spark plug cables are traditonally wired as found in old cars cables, check at a auto parts stores for those, need to be the same lenght and diam to be screwed to the ignition coils and spark plug's connectors... Happy Boating
  11. Sea Rider

    Carburetor question on restoration I’m working on 1992 40 hp MSHQ Yamaha

    Personally dislike testing any motor too long on muffs, tanks, should be tested at wot on flat calm water if possible. Remember, that's a 2 stroke motor and if tested too long at idle/fast idle will foul the plugs. Hope the mentioned retorqued parts will have cancelled the water leaks. If still...
  12. Sea Rider

    Outboard loud when pulling

    Which boat model/length would that be ? Was the motor at max throttle ? If the extra loud noise only chimed in when pulling your brother that motor is revving at the way lugging side of the wot rpm range which is bad for the motor. Will need to prop the motor much better if plan pulling toys...
  13. Sea Rider

    Tube pressure? And need new tube too

    What's the factory recommended pressure needed to have fun with that Mega Rukus ? If with issues while inflated to that given pressure, definitely defective.... Happy Boating
  14. Sea Rider

    What Prop on my Yamaha 9.9

    This is all the data available : 2005 Yamaha 9.9 4 stroke. It currently goes 13 mph, unless post one with all the missing data flew out of my PC. Under powered motors powering large applications have several 3 and 4 blade pitches to choose from, the old boating era has ended to give way to...
  15. Sea Rider

    What Prop on my Yamaha 9.9

    Sorry, this post cést fini for me, arguing with you it's counterproductive, you like running large HP motors to have fun with while I love running under powered motors maxed prop to take the max HP cowl rated out of them to have more boating fun than with a factory delivered prop which for my...
  16. Sea Rider

    What Prop on my Yamaha 9.9

    Let the OP decide if my post was a snarky answer, if helped, wanting going that route or not. The OP has not mentioned a word about which boat type, length will be powered with his Yam 9.9 which has not been tached as to know if its a good performer or not with current factory delivered prop...
  17. Sea Rider

    What Prop on my Yamaha 9.9

    Who understands you guys, you can prop right your larger boats and HP motors but give a holy crap about propping right tiller portable motors to get the max out of them. Run your business, I'll ran my own, know pretty well what can be achieved with motors delivered with factory props which...
  18. Sea Rider

    Carburetor question on restoration I’m working on 1992 40 hp MSHQ Yamaha

    Understand your frustation with that Yammie, if the motor is squirting water around the middle/lower leg while running on muffs expect to see that scenario which it's quite normal. For better clarification, post a pic showing where is the water going out the exhaust port, or were reffering to...
  19. Sea Rider

    What Prop on my Yamaha 9.9

    It never occurred to anyone TODAY either....due because instead buying an induction tach boaters prefer to buy boxed beer cans to have fun. If happy running underpowered tiller motors with a factory delivred prop keep running it that way. All motor manufacturers recommends once the break in...
  20. Sea Rider

    9.8 hp vs 9.9 hp outboard engines

    Which brand 9.8 motor do you plan going for ? Happy Boating
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