Here is the correct way to get you inter looping 4 tec seadoo ready for the up coming season. Be sure the battery is fully charged. Do this by charging it unattached to the wiring on the seadoo and out of it if possible. Put a catch pan under the engine to catch any anti-freeze that will come out of the exhaust when it first starts, unless you know it is environmentally friend anti-freeze. Remove the air intake hose from the throttle body. Open the throttle body valve by pressing on the throttle. Spray the lube through the throttle bore to lubricate the valve mechanism. Then spray generously the external parts of the throttle body. Install the boot. Check the throttle cable and linkage to be sure it is working properly. Check all the hoses and wiring to be sure no wires are cracked or broken/ corroded. Check the anti-freeze level and the oil level, to be sure it is at the correct levels. Be sure the fuel is clean. If it smells bad or hasn't had any stabilizer in it, I would replace it with fresh fuel. I would go over everything with screw drivers (check clamps) all the nuts and bolts to be sure everything is tight, and give everything a once over. Install new spark plugs and you should be ready to fire it up. Connect the garden hose attachment, but leave the water turned off. Hook up the dess lanyard, you should hear 2 beeps. Start it up looking for anti freeze coming out the exhaust, and catch what you can to dispose of properly. After it has run for about 10 seconds turn on the water. Let it run for no longer than say 5 minutes as it will over heat the impeller shaft, bearings and seals. Also the engine gets cooled off when it is in the water. The hose only cools the exhaust systems. Turn off the water first and then shut down the engine, so the water from the hose won't flood the engine. The pressure of the exhaust keeps the water from entering the engine. Remember the procedure start up the engine first turn on water...shut off water turn off engine. Re-check all the fluids and change the oil too if you like.
When you change your oil be sure you use 10w40, marine 4 stroke Oil, with a API of SL, SJ or SN. On older Super Charged models it is recommended you not use synthetic oil. Mineral or synthetic blend is recommended by seadoo. If you need the procedure to changing your oil let me know and I'll post some info on that too. I hope this helps you out.
Karl