ForestWorks Chainsaw - Points to remember when filing cutters

26 | Chainsaw Operator’s Manual
Points to remember when filing cutters:
• Use a file guide recommended by the chain manufacturer.
Figure 39: Roller file guide.
Figure 40: Multifunction gauge.
1 = Sighting edges for side plate
angles
2 = Sighting edges for top plate
filing angles
3 = Cut out for depth gauge
setting
4 = Bar groove cleaner and
scale for bar groove
depth (mm)
• Ensure the file guide rests both on the top plate
and depth gauge.
• First sharpen the cutter with the shortest top
length, then sharpen all other cutters to match.
File until all damage is removed from top plate and
side plate, i.e. back to unworn plating or chrome
surface.
• File from inside to outside using a full length
stroke. Since the file will only work when used in
the forward direction, hold the file clear of the
cutter and do not apply pressure on the return
stroke.
• File all the cutters on one side of the chain first,
then file the cutters facing the opposite direction.
• File each cutter to maintain the profile of the side
plate.
• Try to keep cutters equal in length and angles.
Failure to do so will cause chain to cut to one side
and excessive vibration.
• Finish each cutter with a crisp leading edge, with
no gap between the file and leading edge of the
cutter.
• After sharpening the cutters, check each depth
gauge for correct clearance.
File
Top
plate
Depth
gauge
File guide
Figure 41: Positioning the guide.
A A = B B
Figure 42: Keep cutters equal.
070902 Chainsaw Manual 3pp.indd 26 2/09/09 17:17:18
Chainsaw Operator's Manual:
Chainsaw Safety, Maintenance and Cross-cutting Techniques,
by ForestWorks
Published by CSIRO Publishing, 2009, 64pp
©ForestWorks 2009
http://www.publish.csiro.au