Stihl MSA 140 C-BQ Instruction Manual - Page 41
Mounting and Removing the Guide Bar and, Saw Chain
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0000-GXX-1200-A0 15 Assembling the Chain Saw - The pitch (t) of the chain (1), chain sprocket and, if using a Rollomatic guide bar, the nose sprocket must match. - The drive link gauge (2) of the chain must match the groove width of the guide bar (3). English ► Turn the wingnut counterclockwise until the chain sprocket cover (3) can be removed. ► Remove the chain sprocket cover. 15.2 Mounting and Removing the Guide Bar and Saw Chain 15.2.1 Mounting the Guide Bar and Chain WARNING Make sure the battery is removed and the chain brake is engaged before starting assembly. Never operate your chain saw without a properly mounted guide bar and chain, @ 6.5. Use only guide bar and chain combinations expressly recommended or approved by STIHL, @ 6.4. WARNING The chain has many sharp cutters. If they contact your flesh, they will cut you, even if the chain is not moving, @ 6.4. Always wear heavy-duty work gloves when mounting or otherwise handling the chain, @ 6.3. To mount the guide bar and chain: ► Switch off the chain saw, @ 18.1. ► Engage the chain brake, @ 16.1. ► Remove the battery, @ 17.2. 6 5 5 4 4 ► Remove the tensioning gear (4). ► Remove the screw (5). ► Position the guide bar (6) on the tensioning gear so that the pins of the tensioning gear fit in the holes of the guide bar. ► Insert the screw and tighten it. 4 0000-GXX-1201-A0 1 3 2 ► Raise the handle (1) of the wingnut (2). 0458-716-8621-E 0000-GXX-1199-A0 ► Position the chain in the groove of the guide bar, starting at the tip. ► Make sure that the cutters in the groove on the top side of the guide bar face the tip of the bar. STIHL chains are manufactured with arrows on the tie straps to help the operator determine the proper direction of the chain. Arrows on the tie straps on the top of the bar must point toward the bar tip. 39