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8 – English
SAFETY INSTRUCTIONS
Saw chain
• Saw chain pitch (inches)
Spacing between drive
links.
• Drive link width (mm/
inches).
• Number of drive links.
• Level of kickbak reduction
The level of kickback
reduction offered by a
chain is indicated by its
model number.
Sharpening your chain and
adjusting raker clearance
WARNING!
The risk of kickback is increased with a
badly sharpened chain!
A. 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, just wood powder.
• 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:
FILING ANGLE
CUTTING ANGLE
!
B
A
1
5
FILE POSITION
ROUND FILE DIA-
METER
FILE DEPTH
It is very difficult to sharpen
a chain correctly without the
right equipment. We recom-
mend you to use a file gauge.
This will help you obtain the
maximum kickback
reduction and cutting
performance from your
chain.
• FILE ANGLE TOO
LARGE
• CUTTING ANGLE TOO
SMALL
• FILE DIAMETER TOO
SMALL
The following faults will increase the
risk of kickback considerably.
!