Jonsered CS 2147 - Manual (Page 11)

English – 11
SAFETY INSTRUCTIONS
• Number of drive links.
• Level of kickback reduction. The level of kickback
reduction offered by a chain is only indicated by its model
number. See the Technical data section to find the model
numbers of chains that are recommended for use with
your model of chain saw.
Sharpening your chain and adjusting raker
clearance
General information on sharpening cutting teeth
• Never use a blunt chain. When the chain is blunt you have
to exert more pressure to force the bar through the wood
and the cuttings will be very small. If the chain is very blunt
it will not produce any cuttings at all. Wood powder would
be the only result.
• A sharp chain eats its way through the wood and produces
long, thick cuttings.
• 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.
1 Filing angle
2 Cutting angle
3 File position
4 Round file diameter
5 File depth
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.
See the Technical data section for information about
sharpening your chain.
!
WARNING! The risk of kickback is increased
with a badly sharpened chain!
!
WARNING! The following faults will increase
the risk of kickback considerably:
File angle too large
Cutting angle too small
File diameter too small