Polaris PREDATOR 90 Owner's Manual page 112

Avoid operating your ATV through deep or fast flowing water. If the ATV is operated in
deeper water than recommended, it's critical to have it serviced as outlined in the
maintenance chart beginning on page 122. The following areas need special attention:
engine oil, gearcase oil, front and rear gearcases and all grease fittings.
CAUTION
Major engine damage can result from driving this ATV in deeper water than
recommended. If your vehicle becomes immersed or is operated in water that
exceeds the bottom of the footrests, take it to your dealer for service before starting
the engine.
Driving Safely
109