Chain saw

A chainsaw comprising:

• a housing;
• a prime mover mounted to the housing;
• a saw chain driven by the prime mover;
• a guide bar for guiding the saw chain and slidably connected to the housing;
• a driving member for driving the guide bar to slide relative to the housing;
• an operating member configured to be operated by an operator and swing relative to the housing;
• a transmitting member operable to perform a transmission between the operating member and the driving member, enable the driving member to rotate synchronously with the operating member when the operating member is swung along a first direction, and enable the operating member to rotate relative to the driving member when the operating member is swung along a second direction which is opposite to the first direction;
• a control member configured to be operated by an operator to move to a first position or a second position wherein the driving member rotates in a forward direction when the control member is in the first position the driving member rotates in a reverse direction when the control member is in the second position;
• and
• a bias assembly for biasing the transmitting member so that the transmitting member engages the operating member, wherein the bias assembly comprises a limiting member configured to slidably connect to the control member and a biasing member configured to connect between the limiting member and the control member.