Maintenance; Filling Saw Chain - Makita 5014NB Instruction Manual

MAINTENANCE
CAUTION
:
Always be sure that the tool is switched off and unplugged before attempting to perform
inspection or maintenance.
Filling
saw
chain
To
get
the most in cutting performance from your tool, you must keep the cutter sharp
and filed properly as shown below.
TOP PLATE ANGLE SIDE PLATE ANGLE TOP F I L I N G ANGLE
A top plate angle of
I f you have filed the t o p
30"
is
ideal. 85'.
and side plate correctly
the t o p filling angle will
be 60" -automatically.
File t h e side plate t o
Fig. 2 d
To file the saw chain, push the file in the
direction of the arrow. When pulling it
back, be careful not t o touch the cutters
with the file.
Saw chain
File
After
a
saw chain has been filed two or three times, the "raker" (see Fig. 24) may need
to be filed down slightly. This
i s
because the raker acts
as a
depth gauge for the cutters.
A s the cutters are filed, they lose some height due to their angled shape. Eventually, the
cutters will become lower than the depth gauge and consequently, will not be able to
cut. To remedy this, use
a
flat file to file the tops of the rakers so that they are about
0.5 mm (0.025") below the tips of the cutters (see Fig. 24). Be careful not to file the
rakers excessively or the cutters will be allowed to take too large of a "bite", causing
the tool to s t a l l or snag in the cut.
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