MasterCraft 054-0370-0, Instruction Manual

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headline bars
continuation tabs
notes
warnings
headline bars
continuation tabs
notes
warnings
headline bars
continuation tabs
notes
warnings
19
headline bars
continuation tabs
notes
warnings
headline bars
continuation tabs
notes
warnings
headline bars
continuation tabs
notes
warnings
CHAIN MAINTENANCE
SHARPEN THE CUTTERS
(fig. 10a−fig. 10d)
Be careful to file all cutters (fig. 10a) to the specified
angles and to the same length, as fast cutting can be
obtained only when all cutters are uniform.
1. Remove the battery pack. Wear gloves for protection.
2. Use a 5/32” (4.0 mm) diameter round file and holder
(available separately). Do all of your filing at the
middle position of the guide bar.
3. Keep the file level with the top plate of the tooth. Do
not let the file dip or rock.
4. Keep a correct sharpening angle of 30° between the
file and the saw chain; see figures 10b and 10c .
Always use a file holder (available separately) when
sharpening saw chains by hand. File holders have
markings for the sharpening angle.
5. Using light but firm pressure, stroke towards the front
corner of the tooth. Lift the file away from the steel on
each return stroke.
6. Make a few firm strokes on every tooth. File all left-hand cutters in one direction. Then move to the other
side and file the right-hand cutters in the opposite direction. Occasionally remove filings from the file with a
wire brush (
fig. 10d ).
fig. 10a
Depth gauge
Side plate
Top plate
MAINTENANCE
fig. 10c
FPO
WARNING!
• Improper chain sharpening increases the potential of kickback.
• Failure to replace or repair a damaged chain can cause serious injury.
fig. 10d
Left-hand cutters
Right-hand cutters
fig. 10b
Filing
direction
Sharpening
angle: 30°
Cutter tooth
5/32”(4.0 mm)
round file