2010 Arctic Cat DVX 300 / 300 Utility ATV Service Manual, Page 14Get this manual
2If low, add SAE approved 80W-90 hypoid gear lube as necessaryTo change the lubricant, use the following procedure1Place the ATV on level ground2Loosen the fill plug3Remove the cap screws securing the rear drive gear guard; then remove the guard4Drain the lubricant into drain pan by removing the drain plug from the bottom of the rear driveNOTE: If the rear drive lubricant is contaminated with water, inspect the drain plug, fill plug, andor bladderKM106A
3Install the drain plug and tighten securely4Remove the fill plug and pour the appropriate amount of recommended lubricant into the fill hole5Install the fill plug and tighten securely6Check the area around the drain plug for leakage
5After all the lubricant has been drained, install the drain plug and tighten securelyInstall the rear drive gear guard and tighten the cap screws securely6Pour the appropriate amount of recommended lubricant into the fill holeRemove the level plug and check for appropriate level7Install the fill plug
Drive Chain
Drive chain condition and adjustment should be inspected each day before the ATV is operatedAlways follow the following guidelines for inspecting and servicing the drive chain