Why is oil coming out of the vent tube on a 2004 Kawasaki 250 bayou?

Oil leaking from the vent tube on a 2004 Kawasaki 250 Bayou typically indicates an overfilled crankcase or a malfunctioning venting system. It could also be a result of excessive pressure build-up due to a clogged breather or oil return issues. Checking the oil level and ensuring the vent system is clear can help diagnose and resolve the problem. If the issue persists, further inspection of the engine's internal components may be necessary.