The Makita 020117290 Throttle Lever & Linkage is a genuine replacement component for selected Makita and Dolmar petrol chainsaws. The safety throttle mechanism helps prevent accidental chain activation if the throttle trigger is pressed unintentionally by an obstruction. It also helps prevent unintended throttle operation when starting the saw on the ground with a boot positioned inside the rear handle. Ideal for replacing a worn or damaged throttle control assembly.