SOURCE: How to turn on the SLO mode on the Kawasaki STX-12F Jet Ski
I believe holding down the 'mode' button will change from SLO to FPO.
SOURCE: jet ski is sparking but will not start
Air in fuel lines, vacuum line to pump cracked or leaking, corrosion in carb on teeter totter needle(float type needle).
SOURCE: Jet ski bogs out under load.
I had a similar experience with that model. It turned out to be a mouse nest in the water box. However , in this case i think you just have some moisture corrosion on the rubber tipped needle in the carburetor. Clean that part of the carb and do not alter the tiny spring in any way. If that does not work open the electronics box, if it is wet , dry it out , and seal it back up. Those are the three things I know of that will cause your problem. Start with the carb.
SOURCE: Jet Ski Will not start when cold
If the teeter/totter needles are gummy or covered with moisture corrosion it could be the reason the machine is so hard to start. When storing the jet ski's syphon all the gas out and burn it in your car or truck. Even if you stabilize it it wont be good fuel in the spring. Your plastic tank will not rust so remove the fuel. You may be able to clean them up by running a tank of Chevron Techron through them. Before riding we charge are batteries and start are jet ski's on the trailer/lift before dropping in the lake. This saves the battery. It takes more juice to start the boat in the water.
SOURCE: i have a 1999 kawasaki 900 stx jet ski.last week
my kawasaki 900 stx got no spark to plugs what could be wrong thanks
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