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Owner’s and Safety Manual
for Gasoline Chain Saws (page 2 - 39)
Manuel d’emploi et de sécurité
de tronçonneuses thermiques (page 40 - 77)
WARNING!
Read and understand this Manual. Always follow safety precautions in the Owner’s and Safety Manual. Improper use can cause serious injury! The engine exhaust from this
product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Preserve this Manual carefully!
WARNING!
FUELS WITH MORE THAN 1
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EMISSIONS COMPONENT DEFECT WARRANTY COVERAGE DOLMAR warrant to the initial retail purchaser and each subsequent owner, that this utility equipment was designed, built, and equipped to conform at the time of initial sale to all applicable regulations of the U.S. Environmental Protection Agency (EPA), and that the engine is free of defects in materials and workmanship which would cause this engine to fail to conform with EPA regulations during its warranty period. For the components listed unde
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WARNING ! Careless or improper use of this product can cause serious or even fatal injury. Before operating a chain saw or other DOLMAR products it is important that you read, fully understand and carefully follow the instructions outlined in this owners manual. Kickback may cause severe or fatal injury and is one of many potential dangers in operating a chain saw. Kickback and other safety related precautions are described in detail within this owners manual. Additional owners manuals are a
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Delivery inventory 2 3 1 Chain saw 4 2 Guide bar 3 Saw chain 4 Chain protection cover 5 Universal wrench 5 6 7 1 8 6 Wrench 7 Screw driver for carburetor adjustment 8 Cylinder ribs cleaner In case one of the parts listed should not be in- (only in delivery for model PS-505, PS-5 05 H) cluded in the delivery inventory, please consult 9 Owner’s and Safety Manual (not shown) your sales agent. Symbols You will notice the following symbols on the chain saw and in the Owner’s and Safety Manual:
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Safety precautions for chain saw operators Additional safety precautions The following additional safety precautions must be While operating the chain saw please observe the observed by all users of chain saws: following rules: . Do not operate a chain saw when you are fatigued. a) Contact of the guide bar nose with any object should be avoided. 2. Use safety footwear; snug-fitting clothing; protec- b) Tip contact may cause the guide bar to move tive gloves; and eye, hearing, and he
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Maximum Computed Kickback Angle General Safety Precautions (CKA)* without using the chain brake when using the recommended bar and chain The use of any chain saw may be hazardous. At full combinations (In this example the CKA is 45°). throttle chain speed can reach 45 mph (20 m/s). It is important that you read; fully understand and ob- MaximumComputed Kickback Angle serve the following safety precautions and warnings. (CKA)* with using the chain brake when Read the Owner’s Manual an
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The saw Proper clothing Parts of the chain saw: illustrations and description of Clothing must be sturdy and snug-fitting, but allow parts see page 7. complete freedom of movement. Avoid loose-fitting jackets, scarfs, neckties, jewelry, flared or cuffed pants, or anything that could become entangled with the saw WARNING ! or brush. Wear overalls or jeans with a reinforced cutting resistant insert (fig. 3). Never modify a chain saw in any way. Only at- tachments supplied by DOLMAR or expre
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Wipe off any spilled fuel before starting your saw and Chain saw operating instructions check for leakage. For assembly follow the procedure in the appropriate Check for fuel leakage while refueling and during opera- section "Mounting Guide Bar and Chain" of this manual. tion. If fuel or oil leakage is found, do not start or run DOLMAR chain, guide bar and sprocket must match each the engine until leak is fixed and spilled fuel has been other (see the appropriate section in this manual). w
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Wrap your fingers tightly around the handles, keeping Important adjustments the handles cradled between your thumb and forefin- ger (fig. 7). With your hands in this position, you can WARNING! best oppose and absorb the push, pull and kickback At correct idle speed, chain should not turn. For di- forces of your saw without having it slip out of your rections to adjust idle speed, see the appropriate grip (see section of reactive forces). Make sure your section of this instruction manual. c
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9 In order to keep control of your saw, always maintain a firm foothold. Never work on a ladder, in a tree or on any other insecure support. Never use the saw above shoulder height (fig. 9). 0 Position the chain saw in such a way that your body is Kickback: clear of the cutting attachment whenever the engine Kickback occurs when the upper quadrant of the bar is running (fig. 10). nose contacts a solid object in the wood or is pinched (fig. 11). The reaction of the cutting force of the
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Many factors influence the occurence and force of the kickback reaction. The type of bar and saw chain you use is a factor in the force of the kickback reaction. The speed of contact at which the cutter contacts the object. Kickback force increase with the rate of impact. The contact angle between the nose of the bar and the foreign object (fig. 11). Kickback is most pronounced in the upper quadrant 3 of the bar nose. To avoid kickback DOLMAR chain types are designed to reduce kickback
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Pushback: To avoid pull-in Pushback occurs when the chain on the top of the . Always start a cut with the chain rotating at full speed bar is suddenly stopped when it is pinched, caught and the spike bar in contact with the wood. or encounters a foreign object in the wood. The reac- tion of the chain drives the saw straight back toward 2. Pull-in may also be prevented by using plastic the operator causing loss of saw control. Pushback wedges to open the kerf or cut. fre-quently occurs when
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45° 1 2 2 First cut 45° Second cut = cutting down area 20 7 When felling, maintain a distance of at least 2 /2 tree If the tree has large buttress roots, cut into the largest lengths from the nearest person (see fig. 17). buttresses vertically first (horizontally next) and remove (fig. 20). Note: The noise of your engine may drown any warning call. Felling instructions: Direction of fall 2 8 First clear the tree base and work area from inter- Felling cut fering limbs and brush and clean
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Begin the felling cut slighty higher than the felling notch Plunge-Cut Method and on the opposite side of the tree (fig. 22). Then cut Timber having a diameter more than twice the length horizontally through towards the felling notch. Apply of the guide bar reauires the use of the plunge-cut the chain saw with its spikes directly behind the uncut method before making the felling cut. portion of wood and cut toward the notch (fig. 23). First, cut a large, wide notch. Make a plunge cut in t
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Bucking Bucking is cutting a log into sections. 29 WARNING! 3 There is an extreme danger of kickback at this point. Extra caution must be taken to maintain control of the saw. To make the felling cut, follow WARNING! the sectioning method described previously (fig. . When bucking, do not stand on the log. Make 29). If you are inexperienced with a chain saw sure the log will not roll down-hill. If on a slope, plunge-cutting should not be attempted. Seek the stand on the up-hill side o
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Maintenance and Repair Never operate a chain saw that is damaged, improperly adjusted or not completely or securely assembled. Follow the maintenance and repair instructions in the appropriate section of this manual. WARNING ! Always stop the engine and make sure that the chain is stopped before commencing any maintenance 33 or repair work or cleaning the saw. Allow the chain saw to cool off before doing any maintenance work (burn hazard)! Chain saws with catalytic converter take longer
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Denomination of components 4 5 1 2 3 6 7 7* (*) Only in delivery for model PS-50, PS-5 05, PS-505 H 8 9 16 12 11 10 15 14 13 17 25 18 19 Identification plate 24 Serial no. Year of manufacture 23 22 21 20 Indicate when ordering spare parts! 1 Handle 14 Switch for grip heating (special equipment only on PS-505 H) 2 Filter cover 15 Identification plate 3 Filter hood clip 16 Starter grip 4 Tubular handle 17 Combination switch (Choke / Start / Stop) 5 Hand guard (release for chain
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Technical data PS-460 PS-510 PS-5105 / H 3 Stroke volume cu. in (cm ) 2.8 (45.6) 3. (50.0) 3. (50.0) Bore inch (mm) .69 (43) .77 (45) .77 (45) Stroke inch (mm) .24 (3.4) .24 (3.44) .24 (3.44) Max. power at speed hp / rpm 2.9 / 10,000 3.3 / 10,000 3.9 / 10,000 Max. torque at speed Nm / rpm 2.7 / 7,000 2.9 / 7,000 3.1 / 7,000 Max. engine speed with bar and chain rpm 13,800 13,800 13,800 Idling speed rpm 2,500 2,500 2,500 Coupling speed rpm 3,900 3,900 3,900 Sound P
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PUTTING INTO OPERATION CAUTION: Before doing any work on the guide bar or chain, always switch off the engine and pull the plug cap off the spark plug (see "Replacing the spark plug"). Always wear protec- tive gloves! CAUTION: Start the chain saw only after having assembled it com- pletely and inspected. A Mounting the guide bar and saw chain Use the universal wrench delivered with the chain saw for the following work. Put the chain saw on a stable surface and carry out the following 1 ste
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Lift the chain (9) over the sprocket (8). CAUTION: Do not insert the chain between the chain sprocket and the disc. Guide the chain from above about halfway into the groove (10) on the guide bar. Place the chain over the chain catch (11) on the bottom. CAUTION: 9 8 Note that the cutting edges along the top of the chain must point in the direction of the arrow! 11 10 E 9 12 Pull the chain (9) around the sprocket nose (12) of the guide bar in the direction of the arrow. F Replace the sprock
