js300 and js440 both suck . slow wont plane etc - Page 2
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  1. #11
    PWCToday Newbie
    Join Date
    Aug 2008
    Location
    mpls mn
    Posts
    22

    Re: js300 and js440 both suck . slow wont plane etc

    Found a leak in the exhaust pipe , not sure if it's a aftermarket pipe IMG_20200731_172441404.jpg

  2. #12
    PWCToday Newbie
    Join Date
    Aug 2008
    Location
    mpls mn
    Posts
    22

    Re: js300 and js440 both suck . slow wont plane etc

    IMG_20200731_172437090.jpg
    Attached Images Attached Images

  3. #13
    PWCToday Newbie
    Join Date
    Aug 2008
    Location
    mpls mn
    Posts
    22

    Re: js300 and js440 both suck . slow wont plane etc

    well if anyone has similar issues , i replaced the gasket on the 440 pictured above, and now it doesnt bubbles out around the welds and it actually planed got up to a decent speed. maybe almost full speed i dont know its a 440 so not sure what to expect . not 30mph but maybe 20 or a little over

  4. #14
    PWCToday Newbie
    Join Date
    Aug 2008
    Location
    mpls mn
    Posts
    22

    Re: js300 and js440 both suck . slow wont plane etc

    this is what the plugs looked like after i ran it full speed then shut it right down https://photos.app.goo.gl/nhH3RBdrbHJKZp6N8

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