The hose carries oil from the tank to the pump of the Good Luck chainsaw and provides lubrication of the bar and chain.
Replace it when the rubber has hardened, cracked or lets oil through. Signs: leaks, a bar without lubrication. After replacement, check the oil delivery.
When replacing, clean the seat of dirt, oil and sawdust and inspect the neighboring parts: a worn unit often drags the others with it.
