Makita EA3201S35B Owners Manual - Page 25

MAINTENANCE Sharpening the saw chain 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 protective gloves! The chain needs sharpening when: The sawdust produced when sawing damp wood looks like wood flour. The chain penetrates the wood only under great pressure. The cutting edge is visibly damaged. The saw is pulled to the left or right when sawing. This is caused by uneven sharpening of the chain. Important: Sharpen frequently, but without removing too much metal! Generally, 2 or 3 strokes of the file will be enough. Have the chain resharpened at a service center when you have already sharpened it yourself several times. Proper sharpening: CAUTION: Use only chains and guide bars designed for this saw (see the Extract from the spare‑parts list)! All cutters must be of the same length (dimension a). Cutters with different lengths result in rough running of the chain and can cause cracks in the chain. The minimum cutter length:3 mm.Do not resharpen the chain when the minimum cutter length has been reached; at this point, the chain must be replaced (see the "Extract from the spare‑parts list" and "Replacing the saw chain"). The depth of the cut is determined by the difference in height between the depth limiter (round nose) and the cut‑ ting edge. The best results are obtained with a depth‑limiter depth of 0.64 mm (.025"). CAUTION: Excessive depth increases the risk of kickback! 0.64 mm (.025") min. 3 mm (0.11") 0.64 mm (.025") The sharpening angle (α) must be identical for all cutters! 30° for chain type 092 (91VG), 492 (91PX), 290 (90SG) The teeth will have the proper angle (ß) automatically if the proper round file is used. 80° for chain type 092 (91VG), 492 (91PX), 290 (90SG) Different angles result in a roughly, irregularly running chain, increase wear and tear and cause chain beakage. α α β β 25