Hitachi CS 33EB Handling Instructions Manual page 14

CHAIN SHARPENING
Parts of a cutter (Fig. 40, 41)
WARNING
○ Gloves should be used when sharpening chain.
○ Be sure to round off the front edge to reduce the chance of
kickback or tie-strap breakage.
46 45
47
48
49 50
54
45. Top plate
46. Working corner
47. Side plate
48. Gullet
49. Heel
50. Chassis
51. Rivet hole
52. Toe
53. Depth gauge
54. Correct angle on top plate (degree of angle depends on chain
type)
55. Slightly protruding "hook" or point (curve on non-chisel chain)
56. Top of depth gauge at correct height below top plate
57. Front of depth gauge rounded off
LOWERING DEPTH GAUGES WITH A FILE
WARNING
○ Do not smoothen the upper part of the guard tie straps (58) or
bumper drive links (59) with a fi le or deform them. (Fig. 42)
○ Adjust the depth gauge to the specifi ed setting.
Failure to observe the above raises the possibility of a kickback
and may result in injury.
14
53
52
51
Fig. 40
55
56
57
Fig. 41
58
59
Fig. 42
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. 43)
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. 44)
GENERAL INSTRUCTIONS FOR FILING CUTTERS
File (60) cutter on one side of the chain from the inside out. File on
forward stroke only. (Fig. 45)
60
5) Keep all cutters the same length. (Fig. 46)
6) File enough to remove any damage to cutting edges (side plate
(61) and top plate (62)) of cutter. (Fig. 47)
61
Fig. 43
Fig. 44
60 60
Fig. 45
Fig. 46
62
Fig. 47