Craftsman 172.439831 Operator's Manual

Contents

1716ASSEMBLY & ADJUSTMENTSThe pole saw/chain saw is intended for wood: sawing of trees, tree trunks, branches,wooden beams, planks, etc. Cuts can be sawed with or across the grain.This product is not suitable for sawing mineral materials, plastics or non-wood building materials.INTENDED USECHAIN AND CHAIN BAR ASSEMBLY/REPLACEMENT(See Figs. 3a, 3b, 3c, 3d, 3e and Pgs 14-15 for part reference)CHAIN AND CHAIN BARASSEMBLY/REPLACEMENT cont.ASSEMBLY & ADJUSTMENTS cont.WARNING: Do not connect the chain saw to extension cord and power sourcebefore it is completely assembled. Always use gloves when handling the chain.!WARNING: The chain is not yet tensioned. Tensioning the chain appliesas described under “TENSIONING CHAIN”. The chain now needs to be inspectedto make sure it is properly tensioned.!Fig. 3b1. Place the chain saw on any suitable flat surface.2. Slide the Chain 10 in the slot around the Guide Bar (9). Ensure the Chainis in correct running direction by comparing it to the Chain Direction Symbol (16) foundon the saw body. Ensure the Bar Tensioning Plate (22) is facing outwards. (Fig. 3a).3. Fit the Chain onto the Drive Sprocket (15), so that the Fastening Bar Bolt (19) and thetwo Bar Locating Tabs (20) on the Bar Clamp (18) fit into the keyway of the openingon the Guide Bar (9), (See Fig. 3b).4. Check to make sure all parts are seatedproperly and hold chain and guide bar ina level position. (See Fig. 3c)5. Fit the Chain Cover (12) (pg. 15, Fig. 1),and tighten the Chain Cover by turning theChain Tensioning Knob (11) clockwise untilit is tight. (pg. 15, Fig. 1),ASSEMBLYFig. 3aFig. 3cFig. 3dWARNING: Unplug chain saw frompower source before adjusting saw chaintension.!WARNING: Cutting edges on chainare sharp. Use protective gloves whenhandling chain.!WARNING: ALWAYS Maintain proper chain tension. A loose chain willincrease the risk of kickback. A loose chain may jump out of guide bar groove.This may injure operator and damage chain. A loose chain will cause chain, chainbar, and sprocket to wear rapidly. The chain life of the saw chain mainly dependsupon sufficient lubrication and correct tensioning. Avoid tensioning the chain if itis hot, as this will cause the chain to become over tensioned when it cools down.!TENSIONING CHAIN/LOCKING KNOBAlways check the chain tension before use,after the first cuts and regularly during use.Upon initial operation, new chains can lengthenconsiderably.NOTE: New saw chains will stretch. Check thechain tension frequently when first used andtighten when the Chain (10) becomes loosearound the Guide Bar (9). (See Fig. 3e)1. Place the chain saw on any suitable flat surface.2. Turn the Chain Tensioning Knob (11) clockwiseuntil it is hand tight. The tension is automaticallyset while the Chain Tensioning Knob is beingtightened.The ratchet mechanism prevents the chaintension from loosening.3. Double check the tension set by the automaticChain Tensioning Knob. The correct chaintension is reached when the Chain (10) can beraised approx. 0.12– 0.24” (3-6mm) from theGuide Bar (9) in the center. This should be doneby using one hand to raise the chain against theweight of the machine. (See Fig. 4)4. The Chain will stretch from use and lose proper tension.To turn knob counter clockwise (3x), secure the chain cover, and retension the chainsimply repeat steps 1 - 3 listed above.10 9222018191512 116. Press the cover plate firmly onto themachine and screw on the cover plate (12)with the locking knob (11). (See Fig. 3d)Fig. 3eFig. 40.12-0.24”(3-6mm)EN: Bar / F: BarES: Barra de guía16