The oil pump delivers lubricant to the bar and chain of the Partner 350 chainsaw. It is driven from the engine shaft and works while the saw is running. Manufacturer: EMAST.
Signs of a fault: the bar is dry, the chain overheats and smokes, oil is barely consumed. Before replacement, clear the oil channel and check the hose and the pump drive.
When replacing, clean the seat of dirt, oil and sawdust and inspect the neighboring parts: a worn unit often drags the others with it.
