Flywheel Need to be Removed to Split Crankcase? 750sx
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  1. #1
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    Flywheel Need to be Removed to Split Crankcase? 750sx

    Does the flywheel need to be removed to split the crankcase? Only trying to replace the crank seals. I have a coupler tool and removed the first bolt by the flywheel. Do I need to take out the entire flywheel?

    I don't have a flywheel removal tool / bolt.

    fly2.jpeg

    fly.jpeg
    Last edited by keck; 05-19-2019 at 04:58 PM.

  2. #2
    PWCToday.com Is My Home Away From Home WFO Speedracer's Avatar
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    Re: Flywheel Need to be Removed to Split Crankcase? 750sx

    Yes, how exactly would you replace the front crankshaft seal if you didn't remove the flywheel , Magic ?
    Last edited by WFO Speedracer; 05-19-2019 at 06:25 PM.
    Y'all know me, still the same O.G. but I been low-key
    hated on by most these &^$$@s with no cheese, no deals and no G's, no wheels and no keys, no boats, no snowmobiles, and no skis, mad at me cause I can finally afford to provide my family with groceries

    I was 300SXing when 300SXing wasn't cool !

  3. #3
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    Re: Flywheel Need to be Removed to Split Crankcase? 750sx

    Quote Originally Posted by WFO Speedracer View Post
    Yes, how exactly would you replace the front crankshaft seal if you didn't remove the flywheel , Magic ?
    First time doing this. Have a manual, trying to figure it out. Not sure how to remove the flywheel; hence why asking.

  4. #4
    Attention ***** PWCToday.com Is My Home Away From Home JonnyX2's Avatar
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    Re: Flywheel Need to be Removed to Split Crankcase? 750sx

    You need to remove it to get at the front seal, as WFO pointed out. The flywheel removal bolt is an 18mm x 1.5 hardened bolt. Specialty hardware stores or bolt companies online are your best bet for something less expensive than the one you would buy from Kawi.
    Quote Originally Posted by Firebird A/C&Heating View Post
    OMG.....Rules for 550 vintage ski class...550 ski riders do not conform to any kind of rules. That is why you are riding a 550 ski in the first place. Rules suck....
    PS...the rule book will be in my 550 pump
    Quote Originally Posted by WB1994
    Listen , stop your cryin' , its only an X2.

  5. #5
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    Re: Flywheel Need to be Removed to Split Crankcase? 750sx

    Quote Originally Posted by JonnyX2 View Post
    You need to remove it to get at the front seal, as WFO pointed out. The flywheel removal bolt is an 18mm x 1.5 hardened bolt. Specialty hardware stores or bolt companies online are your best bet for something less expensive than the one you would buy from Kawi.
    Thanks, just ordered one.

  6. #6
    Attention ***** PWCToday.com Is My Home Away From Home JonnyX2's Avatar
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    Re: Flywheel Need to be Removed to Split Crankcase? 750sx

    Impact wrench and they usually pop right off. Don't get crazy and strip out the threads. Some are a little tougher and require some controlled tapping with a hammer, especially if it is the original and has been on there for almost 30 years...
    Make sure you lap the crank snout to the flywheel when you reinstall it. Use valve grinding compound. Use red loctite on the flywheel bolt (I personally NEVER reuse flywheel bolts) and torque to spec. Re-torque after a few hours of riding.
    Quote Originally Posted by Firebird A/C&Heating View Post
    OMG.....Rules for 550 vintage ski class...550 ski riders do not conform to any kind of rules. That is why you are riding a 550 ski in the first place. Rules suck....
    PS...the rule book will be in my 550 pump
    Quote Originally Posted by WB1994
    Listen , stop your cryin' , its only an X2.

  7. #7
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    Re: Flywheel Need to be Removed to Split Crankcase? 750sx

    Quote Originally Posted by JonnyX2 View Post
    Impact wrench and they usually pop right off. Don't get crazy and strip out the threads. Some are a little tougher and require some controlled tapping with a hammer, especially if it is the original and has been on there for almost 30 years...
    Make sure you lap the crank snout to the flywheel when you reinstall it. Use valve grinding compound. Use red loctite on the flywheel bolt (I personally NEVER reuse flywheel bolts) and torque to spec. Re-torque after a few hours of riding.
    Yes, this is the original flywheel and never removed — original owner and engine never opened. I’ll be careful with the threads. I don’t think the crank seals are bad, but following the advice of the forum to change them out while I can. I had to look up how to “lap” but I get it now .

  8. #8
    PWCToday.com Is My Home Away From Home WFO Speedracer's Avatar
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    Re: Flywheel Need to be Removed to Split Crankcase? 750sx

    Also you can apply some heat to the hub of the flywheel with a propane torch, this will help it pop off.
    Y'all know me, still the same O.G. but I been low-key
    hated on by most these &^$$@s with no cheese, no deals and no G's, no wheels and no keys, no boats, no snowmobiles, and no skis, mad at me cause I can finally afford to provide my family with groceries

    I was 300SXing when 300SXing wasn't cool !

  9. #9
    PWCToday.com Is My Home Away From Home
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    Re: Flywheel Need to be Removed to Split Crankcase? 750sx

    Quote Originally Posted by WFO Speedracer View Post
    Yes, how exactly would you replace the front crankshaft seal if you didn't remove the flywheel , Magic ?
    Two piece split seals installable without removing the coupler or flywheel. You do have to cut the old one off. The new style is Kawasaki part # 92049-3719/unobtainium
    Riding mostly Lake Austin

    1984 JS440 -- 1989 650sx -- 1991 X2 -- 1992 750sx -- 1995 900zxi (qty 2) -- 1995 X2

    Quote Originally Posted by cujo View Post
    God intended PWC to be two strokes, as well as dirt bikes, snowmobiles, and chain saws....

  10. #10
    PWCToday.com Is My Home Away From Home
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    Re: Flywheel Need to be Removed to Split Crankcase? 750sx

    I found an alternate part: 92049-F4K3
    Riding mostly Lake Austin

    1984 JS440 -- 1989 650sx -- 1991 X2 -- 1992 750sx -- 1995 900zxi (qty 2) -- 1995 X2

    Quote Originally Posted by cujo View Post
    God intended PWC to be two strokes, as well as dirt bikes, snowmobiles, and chain saws....

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