Assy, Tool-less Knob 579107301

This replacement OEM part is specially designed for Poulan chainsaws. It is the tool-less knob assembly that attaches to the chain brake assembly. The knob provides a user with a comfortable grip to adjust the chain tension. It has internal threads which allow it to be secured and removed without any tools. Check the owner's manual and the diagrams of your model for the correct application of this part. One durable component is included. Chain tension is very important. Chains stretch during use. This is especially true during the first few times you use your saw. Always check chain tension each time before you start the chainsaw.