The nut secures the clutch cover and the guide bar on the studs of the Good Luck chainsaw body. It holds the bar in the correct position.
Replace it if the thread is stripped or the flats are rounded: such a nut will not let you tighten the bar properly, and the chain will start to derail. Choose by the thread of the studs on your saw.
When replacing, clean the seat of dirt, oil and sawdust and inspect the neighboring parts: a worn unit often drags the others with it.
Not sure if it will fit? Call us and we will check against your model.
