Cutting Equipment Designed To Minimise Kickback - Husqvarna 250PS Operator's Manual

5. Cutting equipment
This section describes how through correct maintenance and
through using the right type of cutting equipment you can:
• Obtain maximum cutting capacity.
• Increase the service life of the cutting equipment.
A. Only use cutting
equipment
recommended by us!
See the "Technical data"
section.
B. Keep the chain cutting
teeth properly
sharpened! Follow our
instructions and use the
recommended file
gauge. A damaged or
badly sharpened chain
increases the risk of
accidents.
C. Maintain the correct
raker clearance! Follow
our instructions and use
the recommended raker
gauge. Too large a
clearance increases the
risk of kickback.
D. Keep the chain properly
tesioned! If the chain is
slack it is more likely to
jump off and lead to
increased wear on the
bar, chain and drive
sprocket.
E. Keep cutting equip-
ment well lubricated
and properly main-
tained! A poorly
lubricated chain is more
likely to break and lead
to increased wear on the
bar, chain and drive
sprocket.
!
WARNING!
Never use a machine with defective
safety equipment. The safety equipment
should be maintained as described in
this section. If your machine does not
meet any of these controls you should
contact your service workshop.
SAFETY INSTRUCTIONS
Cutting equipment designed to
minimise kickback
!
WARNING!
Faulty cutting equipment or the wrong
combination of bar and chain increases the
risk of kickback. Use only the bar and chain
combinations recommended in the
"Technical data" section.
The only way to avoid kickback is to make sure that the
kickback zone of the bar never touches anything.
By using cutting equipment with "built-in" kickback
protection and keeping the chain sharp and well-maintained
you can reduce the effects of kickback.
Guide bar
The smaller the tip radius the
smaller the kickback zone
and the lower the chance of
kickback.
Saw chain
A saw chain is made up of a number of links, which are
available in standard and low-kickback versions.
None
Cutting link
Drive link
Side link
Combining these links in different ways gives different degrees
of kickback reduction. In terms of kickback reduction alone,
four different types of link are available.
Kickback reduction Cutting link Drive link
Low
Standard
High
Extra high
Standard Low-kickback
Side link
English –
7