41. Rivet hole
42. Toe
43. Depth gauge
44. Correct angle on top plate (degree of angle depends
on chain type)
45. Slightly protruding "hook" or point (curve on non-
chisel chain)
46. Top of depth gauge at correct height below top plate
47. Front of depth gauge rounded off .
LOWERING DEPTH GAUGES WITH
A FILE
1) If you sharpen your cutters with a fi le holder, check
and lower the depth.
2) Check depth gauges every third sharpening.
3) Place depth gauge tool on cutter. If depth gauge
projects, fi le it level with the top of the tool. Always
fi le from the inside of the chain toward an outside
cutter. (Fig. 40)
4) Round off front corner to maintain original shape of
depth gauge after using depth gauge tool. Always
follow the recommended depth gauge setting found
in the maintenance or operator manual for your saw.
(Fig. 41)
GENERAL INSTRUCTIONS FOR
FILING CUTTERS
File (48) cutter on one side of the chain from the inside
out. File on forward stroke only. (Fig. 42)
5) Keep all cutters the same length. (Fig. 43)
6) File enough to remove any damage to cutting edges
(side plate (49) and top plate (50)) of cutter. (Fig. 44)
Fig. 40
Fig. 41
48
48
49
S H A R P E N I N G A N G L E S F O R
SHARPENING SAW CHAIN
1. Part Number
2. Pitch
3. Depth Gauge Setting
4. Side Plate Filing Angle
5. Top Plate Angle
6. File Guide Angle
English
48
Fig. 42
Fig. 43
50
Fig. 44
90SG-40 / 90PX-40
3/8"
0.025"
80°
30°
90°
15