S If the brake is already activated, it is disengaged by pulling the front hand guard back toward the front handle as far as possible.

SWhen cutting with the saw, the chain brake must be disengaged.

Disengaged

Engaged

Braking function control

CAUTION: The chain brake must be checked several times daily. The engine must be running when performing this procedure. This is the only instance when the saw should be placed on the ground with the engine run- ning.

Place the saw on firm ground. Grip the rear handle with your right hand and the front han- dle with your left hand. Apply full throttle by fully depressing the throttle trigger. Activate the chain brake by turning your left wrist against the hand guard without releasing your grip around the front handle. The chain should stop immediately.

Inertia activating function control

WARNING: When performing the following procedure, the engine must be turned off.

Grip the rear handle with your right hand and the front handle with your left hand. Hold the chain saw approximately 14(35 cm) above a stump or other wooden surface. Release your grip on the front handle and use the weight of the saw to let the tip of the guide bar fall forward and contact the stump. When the tip of the bar hits the stump, the brake should activate.

CUTTING METHODS

IMPORTANT POINTS

SCheck chain tension before first use and after 1 minute of operation. See CHAIN

TENSION in the ASSEMBLY section.

SCut wood only. Do not cut metal, plastics, masonry, non-wood building materials,

etc.

SStop the saw if the chain strikes a foreign object. Inspect the saw and repair or re-

place parts as necessary.

SKeep the chain out of dirt and sand. Even a small amount of dirt will quickly dull a chain

and thus increase the possibility of kickback.

SPractice cutting a few small logs using the following techniques to get the “feel” of us- ing your saw before you begin a major sawing operation.

S Squeeze the throttle trigger and allow the engine to reach full speed before cutting.

S Begin cutting with the saw frame against the log.

S Keep the engine at full speed the entire time you are cutting.

S Allow the chain to cut for you. Exert only light downward pressure. If you force the cut, damage to the bar, chain, or en- gine can result.

S Release the throttle trigger as soon as the cut is completed, allowing the en- gine to idle. If you run the saw at full throttle without a cutting load, unneces- sary wear can occur to the chain, bar, and engine.

S To avoid losing control when cut is com- plete, do not put pressure on saw at end

of cut.

S Stop the engine before setting the saw down after cutting.

TREE FELLING TECHNIQUES

WARNING: Check for broken or dead branches which can fall while cutting causing serious injury. Do not cut near build- ings or electrical wires if you do not know the direction of tree fall, nor cut at night since you will not be ale to see well, nor during bad weather such as rain, snow, or strong winds, etc. If the tree makes contact with any utility line, the utility company should be notified immediately.

SCarefully plan your sawing operation in ad- vance.

SClear the work area. You need a clear area all around the tree so you can have secure

footing.

S Study the natural conditions that can cause the tree to fall in a particular direc- tion.

Natural conditions that can cause a tree to fall in a particular direction include:

SThe wind direction and speed.

S The lean of the tree. The lean of a tree might not be apparent due to uneven or sloping terrain. Use a plumb or level to de- termine the direction of tree lean.

SWeight and branches on one side. S Surrounding trees and obstacles.

Look for decay and rot. If the trunk is rotted, it can snap and fall toward the operator. Check for broken or dead branches which can fall on you while cutting.

Make sure there is enough room for the tree to fall. Maintain a distance of 2-1/2tree lengths from the nearest person or other ob- jects. Engine noise can drown out a warning call.

Remove dirt, stones, loose bark, nails, sta- ples, and wire from the tree where cuts are to be made.

Plan a clear retreat path to the rear and diag- onal to the line of fall.

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Poulan 545123817 Cutting Methods, Braking function control, Inertia activating function control, Important Points

545123817 specifications

The Poulan 545123817 is a robust chainsaw designed for both professional and residential use, offering a blend of power, efficiency, and ergonomics. This model is particularly noted for its reliability, making it a popular choice among homeowners and arborists alike.

One of the standout features of the Poulan 545123817 is its 50cc engine, which provides ample power for cutting through various types of wood. This capability allows users to tackle everything from small branches to larger trees, enhancing its versatility on the job. The engine is optimized for fuel efficiency, ensuring that users can work for extended periods without the need for frequent refueling.

The chainsaw utilizes a 20-inch Oregon bar and chain, providing the reach necessary for larger cutting tasks while maintaining a manageable weight. The Oregon technology ensures the chain maintains its sharpness longer, reducing the downtime spent on blade maintenance. Additionally, the design includes automatic bar and chain oil lubrication, which minimizes friction and wear, contributing to the longevity of the tool.

Ergonomics play a crucial role in the usability of the Poulan 545123817. The chainsaw features an anti-vibration system that absorbs shocks and vibrations during operation, which significantly reduces user fatigue over long cutting sessions. The front and rear handles are designed for comfort, with a grip that enhances control and maneuverability.

Safety is paramount in any chainsaw, and the Poulan 545123817 incorporates several important safety features. It includes a chain brake that automatically engages in the event of kickback, helping to prevent accidents. The chainsaw also has a low kickback chain, which reduces the force that can cause the chainsaw to jerk away from the user unexpectedly.

Another noteworthy aspect of the 545123817 is its ease of use. The chainsaw is equipped with an easy-start system that reduces the effort required to start the engine, making it more accessible to users of varying skill levels. Moreover, the model features tool-less air filter and spark plug access, which simplifies maintenance tasks, allowing users to keep the tool in top condition with minimal hassle.

In conclusion, the Poulan 545123817 is a powerful and efficient chainsaw that combines advanced technologies with practical features. Its well-balanced design, safety mechanisms, and user-friendly operation make it an excellent choice for anyone looking to accomplish cutting tasks with ease. Whether for professional landscaping or simple home projects, this chainsaw provides reliable performance that can handle a variety of challenges.