valutazioni - 3, GPA: 4
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Start making the upper notch cut (C) on the side of the tree facing the felling direction (E). Be sure you don t make the lower cut too deep into the trunk. The notch (C) should be deep enough to create a hinge (F) of sufficient width and strength. The notch should be wide enough to direct the fall of the tree for as long as possible. OPERATING INSTRUCTIONS OPERATING INSTRUCTIONS Fig. 11 LIMBING Limbing a tree is the process of removing the branches from a fallen tree. Do not remove supporting limbs (A) until after the log is bucked (cut) into lengths (Fig. 12). Branches under tension should be cut from the bottom up to avoid binding the chain saw. A Fig. 12 Never cut tree limbs WARNING: while standing on a tree trunk. BUCKING Bucking is cutting a fallen log into lengths. Make sure you have a good footing and stand uphill of the log when cutting on sloping ground. If possible, the log should be supported so that the end to be cut off is not resting on the ground. If the log is supported at both ends and you must cut in the middle, make a downward cut halfway through the log and then make the undercut. This will prevent the log from pinching the bar and chain. Be careful that the chain does not cut into the ground when bucking as this causes rapid dulling of the chain. Fig. 13 When bucking on a slope, always stand on the uphill side. 1. Log supported along entire length: Cut from top (overbuck), being careful to avoid cutting into the ground (Fig. 13). 2. Log supported on 1 end: First, cut from bottom (underbuck) 1/3 diameter of log to avoid splintering. Second, cut from above (overbuck) to meet first cut and avoid pinching (Fig. 14). 3. Log supported on both ends: First, overbuck 1/3 diameter of log to avoid splintering. Second, underbuck to meet first cut and avoid pinching (Fig. 15). NOTE: The best way to hold a log while bucking is to use a sawhorse. When this is not possible, the log should be raised and supported by the limb stumps or by using supporting logs. Be sure the log being cut is securely supported. Fig. 14 Fig. 15 BUCKING USING A SAWHORSE For personal safety and ease of cutting, the correct position for vertical bucking is essential (Fig. 16). A. Hold the saw firmly with both hands and keep thesaw to the right of your body while cutting. B. Keep the left arm as straight as possible. C. Keep weight on both feet. While the saw is cutting, be sure the chain and bar are being properly lubricated. CAUTION: A B Fig. 16 C 13 INSTALL THE GUIDE BAR 1. Place the power on a flat surface. 2. To remove the side cover (A), turn the knob (B) counter-clockwise (Fig. 17). 3. Screw (C) the tension plate (D) on the bar (Fig. 19). These instructions are for replacing a bar. The unit is fully assembled when shipped. INSTALL THE SAW CHAIN 1. Spread the chain out with the cutting edges (E) of the chain pointing in the DIRECTION OF ROTATION (Fig. 20). 2. To fit the chain on the bar, turn the tension plate (D) counter-clockwise to the end. Install the chain and bar on the power unit, turn the tension plate (D) clockwise and then put the side cover (A) on (Fig. 21). 3. Turn the knob clockwise, adjust the chain tension ring (F) and then tighten the knob. 4. After running the chain saw about 1 hour, retension the chain. If needed, follow the tension adjustment instructions in the next section. Always use protective gloves when handling the saw chain. WARNING: Fig. 18 E Fig. 20 MAINTENANCE AND REPAIR INSTRUCTIONS B A C D A D F Disconnect the chain saw from power source before checking or adjusting the chain saw tension. CAUTION: Fig. 21 Fig. 17 Fig. 19 14 SAW CHAIN TENSION ADJUSTMENT Proper tension of saw chain is extremely important and must be checked before starting, as well as during any cutting operation. Taking the time to make needed adjustments to the saw chain will result in improved cutting performance and prolonged chain life. NOTE: A new chain and bar will need readjustment after as few as 5 cuts. This is normal during the breakin period, and the interval between future adjustments will lengthen quickly (Fig. 22). Always use protective gloves when handling the saw chain. WARNING: A B C Fig. 22 Fig. 23 To adjust the saw chain: NOTE: Make sure the Chain Brake® is disengaged. Disengage the Chain Brake® (D) by pulling it backward (Fig. 23). 1. Tensioning the chain can be accomplished with relative ease. Turn bar bolt knob (E) counter clock wise. Then turn ring (F) counter clock wise to loosen chain or clock wise to tighten chain (Fig. 24). If saw chain is TOO LOOSE or TOO TIGHT, the sprocket, bar, chain, and crankshaft bearings will wear more rapidly. Study Fig. 22 for information concerning correct cold tension (A), correct warm tension (B), and as a guide for when saw chain needs adjustment (C). CAUTION: Fig. 24 MAINTENANCE AND REPAIR INSTRUCTIONS D E 2. After adjustment and while wearing heavy duty work gloves, move the saw chain back and forth on the guide bar to be sure the chain moves freely and is in prope...
Questo manuale è adatto anche per i modelli :Benzo e seghe - TB4516CC (28.06 mb)
Benzo e seghe - TB4516CC (28.06 mb)
Benzo e seghe - TB4516CC (28.06 mb)
Benzo e seghe - TB4516CC (28.06 mb)