Operation-control lever unit for engine-powered working machine

摘要

An operation-control lever unit for regulating engine power of an engine-powered working machine to control operation of a working tool includes a throttle-lever holding mechanism (50) operative in response to pivotal movement of a lock lever (40) in a locking direction to frictionally hold the throttle lever (30) at a desired position. The throttle-lever holding mechanism (50) includes a stationary cam (23) on the head portion (12), a movable cam on the lock lever (40) and cooperating with the stationary cam (23) to displace the lock lever (40) along a support shaft (61) in a direction away from the stationary cam (23), and a resilient member (52) disposed behind the movable cam (47) and resiliently urging the movable cam (47) toward the stationary cam (23).