2003 Polaris MSX 140 Personal Watercraft Service Manual, Page 23Get this manual
Maintenance Electrical ComponentsContinued Replenishing Battery Fluid
The fluid level should be kept between the upper and lower level marksTo refill use only distilled waterTap water contains minerals which are harmful to batteryMaintain Between Upper and Lower Level Marks
Battery Connections
Battery terminals and connections should be kept free of corrosionIf cleaning is necessary, remove the corrosion with stiff wire brushWash thoroughly with solution of baking soda and water (one tablespoon of baking soda to one cup of water)Rinse well with tap water and dry off with clean shop clothsCoat the terminals and terminal bolts with Nyogeltgrease
Nyogelt Grease PN 2871329
Top View of Battery Vent Tube