17 ENGLISHCleaning the oil discharge holeSmall dust or particles may be built up in the oil dis-charge hole during operation. These dust or particlesmay impair the oil to flow and cause an insufficientlubrication on the whole saw chain. When a poor chainoil delivery occurs at the top of guide bar, clean the oildischarge hole as follows.1. Remove the sprocket cover and saw chain fromthe tool.2. Remove the small dust or particles using a slottedscrewdriver or the like.21Fig.34► 1. Slotted screwdriver 2. Oil discharge hole3. Insert the battery cartridge into the tool. Pull theswitch trigger to flow built-up dust or particles off the oildischarge hole by discharging chain oil.4. Remove the battery cartridge from the tool.Reinstall the sprocket cover and saw chain and guidebar on the tool.Replacing the sprocketCAUTION: A worn sprocket will damage anew saw chain. Have the sprocket replaced in thiscase.Before fitting a new saw chain, check the condition ofthe sprocket.12Fig.35► 1. Sprocket 2. Areas to be worn outAlways fit a new locking ring when replacing thesprocket.21Fig.36► 1. Locking ring 2. SprocketNOTICE: Make sure that the sprocket is installedas shown in the figure.Storing the tool1. Clean the tool before storing. Remove any chipsand sawdust from the tool after removing the sprocketcover.2. After cleaning the tool, run it under no load to lubri-cate the saw chain and guide bar.3. Cover the guide bar with the guide bar cover.4. Empty the oil tank.