Well, in order to eliminate the gauge as the failure point you can test it by unplugging the wires coming from the fuel baffle to the wire harness with which they connect. Stick a paper clip in the wire harness running off to the gauge to close the loop, push your start button (without key on post) to activate your gauges. The Fuel gauge should read full, if it is not, your gauge is bad.
Assuming your gauge is ok, there are typically three other issues that would be causing your problem.
- Your magnet has fallen off the fuel float
- The fuel float has absorbed fuel and no longer floats
- A small fuse inside the baffle has blown
You will have to remove the baffle to fix any of these issues.
If the magnet has fallen off, you can fish it out with another magnet and reattach to the float. Use a dab of some sealant/adhesive that is not soluable in fuel to keep it in place if necessary. The magnet is what the fuel baffle senses the location of in order to read the fuel level.
If the float no longer floats in gasoline, replace it (~$10-$15). The float holds the magnet.
If everything else is ok, then your fuse must be blown. You can fix it by bypassing the fuse (soldering the gap..I don't exactly like this idea) or finding a suitable replacement fuse to solder in there. In order to do this you will need to cut open the baffle. Google "Seadoo fuel baffle fuse fix", that should get you some insight as to how to do this. Alternatively, you can get a used/new baffle for roughly $80-$160.
