The sharpening angle (α)
30° for chain type 092 (91VG), 492 (91PX), 290 (90SG)
The teeth will have the proper angle (ß) automatically if the
for chain type 092 (91VG), 492 (91PX)
75° for chain type 290 (90SG)
The sawdust produced when sawing damp wood looks like
Have the chain resharpened at a service center when you
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