How tighten chain 330 trail boss?

To tighten the chain on a 330 Trail Boss, first, elevate the rear of the ATV using a jack or stand for safety. Locate the chain adjustment bolts on the rear axle and loosen the lock nuts. Turn the adjustment bolts evenly on both sides to tighten the chain until it has the appropriate slack, typically around 1-2 inches. Finally, re-tighten the lock nuts and check the chain tension again before lowering the ATV.