This manually operated working machine such as a chain saw, pruning shears, etc. is constituted by having the motor case and a grip case 2, connecting the motor case and the grip case 2 to each other by a vibrationproofing element and fixing a front part grip pipe 4 on the grip case 2 at an ordinary working holding position. The grip case 2 has a longitudinal beam 5. The longitudinal beams 5 is furnished with a front part end surface 7 positioned in the cross direction against a longitudinal axis 6 of the longitudinal beam, and a fixed end 8 of the grip pipe 4 makes contact with and is fixed on the front part end surface 7. |