The cutting part of the chain is called the cutting link and
this consists of a cutting tooth (A) and the raker lip (B). The
cutting depth is determined by the difference in height
between the two.
When you sharpen a cutting tooth there are ﬁve important
factors to remember.
Round ﬁle diameter
It is very difﬁcult to sharpen a chain correctly without the right
equipment. We recommend that you use our ﬁle gauge. This
will help you obtain the maximum kickback reduction and
cutting performance from your chain.
WARNING! The following faults will increase
the risk of kickback considerably:
Sharpening cutting teeth
To sharpen cutting teeth you will need a round ﬁle and a ﬁle
Check that the chain is correctly tensioned. A slack chain
will move sideways, making it more difﬁcult to sharpen
Always ﬁle cutting teeth from the inside face outwards.
Reduce the pressure on the return stroke. File all the teeth
on one side of the bar ﬁrst. Then turn the saw over and ﬁle
the remaining teeth from the other side.
File angle too large
Cutting angle too small
File diameter too