New to stand ups so I bought a 650sx/need help
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  1. #1
    PWCToday Newbie Dantonelli's Avatar
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    New to stand ups so I bought a 650sx/need help

    Hello all! First off I want to thank this board for helping me diagnose an issue with my Ski. A little background: I have been riding sit downs basically since I can remember. My dad owned a pair of 1992 Yamaha wave runners for a long time until he stepped up to a pair of 1998 wave runner xl1200s. I always saw the cool guys on stand ups and wanted to try but my dad would never go for it... Fast forward 16 years and I buy a 1996 Yamaha WaveVenture 1100 for the family to ride. Great ski! Love it! Still had the itch for a stand up. Fast forward to last Friday. I look on my local Facebook Marketplace and BAM! 1987 650sx for $250. Iím like.. ok probably everything is taken off or missing, blah blah blah. So I get there to find a fairly complete Ski with a TON of upgrades!

    Kerker Pipe and Manifold
    Sudco Keihin CDK-II 42mm carb
    OceanPro head
    OceanPro Rideplate
    PJS intake Grate
    WestCoast waterbox
    5į bars with aluminum Finger Throttle
    HydroTurf deck

    Anyway... the guy says the usual ďneeds battery and a carb cleaningĒ. And Iím like, ok... weíll see. So I get it home and get a battery in it, hit the switch and nothing... my heart sank. So I turned to this forum and saw that some people had issues with their start switch. So I took it off and the start lock out was engaged but there was no plastic piece. So, I disengaged lockout and Boom! She turned over!

    Is it OK to run the Ski without the little plastic piece?(pic)

    EC1F63EE-2729-40A6-9CF3-1DEE9D7B4C68.jpeg

    Anyway... thanks for the advice and thank you to all the active people on this forum!

  2. #2
    PWCToday.com Is My Home Away From Home wmazz's Avatar
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    Re: New to stand ups so I bought a 650sx/need help

    The 87' didn't come stock with that on-off switch. That switch
    was offered as an upgrade after an X2 was involved in a crash
    on the backside of a race track, and then it went wild, stuck wot,
    ghost riding straight into the spectators and parked race skis along
    the shoreline. It hit the skis, and launched into the air and knocked
    a TV camera man of his scaffolding. That race was the season opener
    for 93' IJSBA Pro tour at San Diego, CA.

    The lock out is only there to prevent kids from starting the engine
    by accident. All you really need is a good tether. Sometimes the
    switch can be a little finicky of the tether is a little to thin.


    Next you will need to start it, and the first question I have is:
    Does the engine pop or momentarily run then quit?


    Bill M.

    Has that engine been converted to premix?
    Last edited by wmazz; 09-01-2018 at 08:12 PM.
    Horsepower == Speed, RPM != Speed



  3. #3
    PWCToday Newbie Dantonelli's Avatar
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    Re: New to stand ups so I bought a 650sx/need help

    I have a friend who is a JetSki mechanic. We went through the fuel system and put brand new lines on everything as well as a carb kit. We started it up and BRAAP BRAAP!!! I didnít notice any popping while it was running either. It has already been converted to premix. I also put 2 new NGK BRE8S plugs as well. As long as I donít need that Start lockout pin, I think Iím set. I made my first fuel tank 32:1 pre-mix to make sure it is well oiled after sitting for seemingly 10+ years. Iíll be taking it out tomorrow so fingers crossed! Thank you for the info on the switch!
    Last edited by Dantonelli; 09-02-2018 at 02:00 AM.

  4. #4
    PWCToday.com Is My Home Away From Home wmazz's Avatar
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    Re: New to stand ups so I bought a 650sx/need help

    Good Luck!


    Bill M.

    Quote Originally Posted by Dantonelli View Post
    I made my first fuel tank 32:1 pre-mix to make sure it is well oiled
    Some people will say that is too much oil, but I prefer top quality MX oils like 927 @ 20:1. Especially
    if you start racing in stock, limited, or mod classes.

    32:1 is a step in the right direction, so long as its not cheap old smokey oil
    Last edited by wmazz; 09-02-2018 at 02:10 AM.
    Horsepower == Speed, RPM != Speed



  5. #5
    PWCToday Guru
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    Re: New to stand ups so I bought a 650sx/need help

    Do you hear a click where the relay is you can start by following the power idk how good you are with electrical but if you have a meter check the starter and make sure motor isn’t locked up then if power isn’t getting to starter then check relay then if power isn’t getting to relay check all the electrical going to relay for lose ground broken wire all that good stuff

  6. #6
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    Re: New to stand ups so I bought a 650sx/need help

    Never mind didn’t read you got I️t fixed

  7. #7
    PWCToday Newbie Dantonelli's Avatar
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    Re: New to stand ups so I bought a 650sx/need help

    UPDATE: she runs and drives but my tall fat uncoordinated self couldn’t get up on it... Also, how much water should be in the engine compartment? The water level was up past the output shaft. I know a lot of guys put bilge pumps in. Is that the way to go? Anyway... I want to get that figured out before I take it out again.

    I may have also got some water in the carb. What should I do to clear that out?

    Thanks!

  8. #8
    PWCToday Newbie Dantonelli's Avatar
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    Re: New to stand ups so I bought a 650sx/need help

    UPDATE: she runs and drives but my tall fat uncoordinated self couldn’t get up on it... Also, how much water should be in the engine compartment? The water level was up past the output shaft. I know a lot of guys put bilge pumps in. Is that the way to go? Anyway... I want to get that figured out before I take it out again.

    I may have also got some water in the carb. What should I do to clear that out?

    Thanks!

  9. #9
    PWCToday Guru
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    Re: New to stand ups so I bought a 650sx/need help

    So the ski has a stock bilge built in but I️ do add bilges I’m 16 and when I️ work on peoples skis who are new to skis they are constantly following and dumping water in so I️ put one in for them if you want to drain the water out of the ski by using the stock bilge just go in a straight line and when you want to try a fun ski get an x2

  10. #10
    PWCToday.com Is My Home Away From Home Myself's Avatar
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    Re: New to stand ups so I bought a 650sx/need help

    That's a lot of water, check for cracking around the driveshaft support/seal.
    http://www.facebook.com/twinlakesjetskirepair

    '89 Kawi 650SX 42.4 GPS
    +3" stock pipe, ported ex. manifold, drilled waterbox, blueprinted pump, Ocean Pro ride plate

    '99 Yama GP1200 65U 61.8 GPS
    ported cylinders, matched cases, milled head, blueprinted pump, long ride plate

    '96 Seadoo HX 717 53.13 GPS
    light porting, massaged cases, lightened flywheel, port matched manifolds, Rossier pipe, stubby pump cone

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