Chain Brake with Kickback Guard

Your chain saw is equipped with a chain brake designed to stop the chain instantaneously in the event of a kickback. A chain brake can reduce the risk of accident, but only the operator can prevent accidents from happening. Be extremely careful when operating a chain saw and do not allow the kick- back danger zone to make contact with anything.

•The chain brake (A) is activated either manually (with the left hand) or by the force of inertia (the inertia of the kickback guard resisting the motion of the saw from the force of the kickback). However it is activated, the kickback protection mechanism works in the opposite direction to the force of the kickback. The saw incorporates a slip clutch which pro- tects the saw against overload. If the chain stops while the motor is running, the saw is overloaded. Ease up on the cutting pressure until the chain starts running again. If the saw jams in the tree, stop the saw immediately and free it.

•The chain brake is also activated when the kickback guard

(B)is pushed forward. This releases a springloaded mecha- nism which jerks the brake band tightly around the brake drum.

•The chain brake may be activated manually or by the force of inertia depending on the strength of the kickback and the position of the saw in relation to the object which made contact with the kickback danger zone.

-If the kickback is sufﬁciently violent and the left hand is too far from the kickback guard, the chain brake is activated by the INERTIA of the chain brake against the force of the kickback.

-In the event of smaller kickbacks or when the left hand is near the kickback guard, the chain brake is activated manually with the left hand.

•When the chain saw is turned on its side and the operator is holding the side of the front handle, the kickback guard will not strike the left hand in the event of a kickback and will thus not activate the chain brake. In a situation of this type, inertia is the only thing that can activate the chain brake, but like manual activation, it will not work in every situation.

Kickback guard inspection

•Inspect kickback guard for visible defects, such as cracks.

•Move kickback guard back and forth to ensure that it moves freely without being loose.

ENGLISH

•The purpose of the kickback guard is not only to activate the chain brake. Its other important function is to reduce the danger of contact with the chain in the event that the operator loses his grip on the front handle.

•Use the chain brake as a «parking brake» when carrying the chain saw around or putting it down for short periods! Besides automatic activation in the event of a kickback, the chain brake may also be activated manually and must be activated in the event of any inadvertent contact with a ro- tating chain.

•An activated chain brake is released by pulling the kickback guard back towards the front handle.

•As pointed out on page 7, a kickback can be extremely violent and lightning-fast. Most kickbacks are small and do not activate the chain brake. When this happens, it is im- portant to maintain a ﬁrm grip on the saw and not let go.

Manual chain brake function check

•Check chain brake daily or every time the saw is used. Holding the running saw ﬁrmly with the left hand on the front handle and the right hand on the rear handle, twist your left wrist, pushing the kickback guard to activate the chain brake without letting go of the front handle. The chain should stop instantaneously. If the chain brake does not perform as required, have it serviced by authorized per- sonnel.

Inertia chain brake function check

•Hold the running saw level with the guide bar approximately 45 cm above a stump or other solid wooden object.

Release the power trigger.

•Release the front handle, letting the chain saw pivot in your right hand as the guide bar falls down and strikes the stump.

The brake should activate when the bar nose hits the stump.

317 EL, 321 EL specifications

The Husqvarna 317 EL and 321 EL are two innovative models of electric chainsaws designed to meet the needs of both landscaping professionals and homeowners. These machines integrate modern technology with user-friendly features to provide a robust and eco-friendly cutting experience.

The Husqvarna 317 EL is lightweight and well-balanced, making it ideal for prolonged use. It features a powerful electric motor that ensures consistent performance without the noise and emissions typically associated with gasoline-powered alternatives. With a bar length of 14 to 16 inches, the 317 EL is capable of handling various cutting tasks, from pruning branches to cutting firewood. The saw is equipped with an automatic chain lubrication system, which maintains optimal chain performance by reducing wear and ensuring smooth operation.

Similarly, the Husqvarna 321 EL is designed for users looking for a more powerful option. With a slightly longer bar length, it offers greater cutting capacity, making it suitable for larger projects. The 321 EL also boasts an efficient electric motor, providing high torque for demanding cutting tasks. One of the standout features of this model is its ergonomic design, including a comfortable handle and reduced vibration levels, which enhance user comfort and reduce fatigue during extended use.

Both models utilize advanced safety features, including a chain brake system that stops the chain instantly in case of kickback, ensuring user safety at all times. They also come with an easy-to-access chain tensioning system, allowing for quick adjustments without the need for additional tools. Husqvarna's commitment to innovation is evident in these chainsaws, as they incorporate features like an onboard battery indicator, which keeps users informed about battery levels.

In terms of maintenance, both the 317 EL and 321 EL are designed for convenience. Their compact designs and easy-to-remove air filters make routine maintenance and cleaning straightforward. The durable construction ensures longevity and reliable performance in a variety of conditions.

Overall, the Husqvarna 317 EL and 321 EL offer a blend of power, efficiency, and safety, making them excellent choices for anyone looking to invest in electric chainsaws. With their impressive features and innovative technologies, these models stand out in the market, catering to the needs of different users while promoting environmentally friendly practices.