Husqvarna Z 254 Manual

English Ð 11
!
SAFETY INSTRUCTIONS
C Some terms that describe the bar and chain
When the cutting equipment supplied with your saw becomes
worn or damaged you will need to replace it. Use only the type
of bar and chain recommended by us. See the
 ÓTechnical dataÓsection to find out which equipment is recommended for your
saw.
Bar
¥ LENGTH (inches/cm)
¥ NUMBER OF TEETH ON
BAR TIP SPROCKET (T).
Small number = small tip
radius = low-kickback
¥ CHAIN PITCH (inches)
The spacing between the
drive links of the...

12 Ð English
SAFETY INSTRUCTIONS
!
2 Sharpening your chain and adjusting
raker clearance
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,...

English Ð 13
!
C General advice on setting raker clearance
¥ When you sharpen the
cutting teeth you reduce the
RAKER CLEARANCE
(cutting depth). To maintain
cutting performance you
must file back the raker
teeth to the recommended
height.
See the 
ÓTechnical dataÓ
section to find the raker
clearance for your saw
chain.
¥ On a low-kickback cutting
link the front edge of the
raker lip is rounded. It is
very important that you
maintain this radius or bevel
when you adjust the raker
clearance.
¥ We recommend...

14 Ð English
1 Undo the bar nuts that
hold the clutch cover and
chain brake, using the
combination spanner.
Then tighten the nuts by
hand as tight as you can.
2 Raise the tip of the bar
and stretch the chain by
tightening the chain
tensioning screw using
the combination spanner.
Tighten the chain until it
hangs slack on the
underside of the bar.
3 Use the combination
spanner to tighten the bar
nuts while lifting the tip of
the bar at the same time.
Check that you can pull
the chain round freely by
hand...

English Ð 15
C Checking chain lubrication
¥ Check the chain lubrication
each time you refuel.
Aim the tip of the saw at a
light coloured surface about
20 cm away. After 1 minute
running at 3/4 throttle you
should see a distinct line of
oil on the light surface.
If the chain lubrication is not working:
1 Check that the oil channel
in the bar is not
obstructed. Clean if
necessary.
2 Check that the groove in
the edge of the bar is
clean. Clean if necessary.
3 Check that the bar tip
sprocket turns freely...

16 Ð English
H Bar
Check regularly:
¥ Whether there are burrs on
the edges of the bar.
Remove these with a file if
necessary.
¥ Whether the groove in the
bar has become badly worn.
Replace the bar if
necessary.
¥ Whether the tip of the bar is
uneven or badly worn. If a
hollow forms on one side of
the bar tip this is due to a
slack chain.
¥ To prolong the life of the bar
you should turn it over daily.
MOST CHAIN SAW ACCIDENTS HAPPEN
WHEN THE CHAIN TOUCHES THE OPERA-
TOR.
¥ WEAR PERSONAL PROTECTIVE...

English Ð 17
!
6 Take great care when you
cut with the top edge of
the bar, i.e. when cutting
from the underside of the
object. This is known as
cutting on the push
stroke. The chain tries to
push the saw back
towards the user.
Unless the user resists
this pushing force there is
a risk that the saw will
move so far backwards
that only the kickback
zone of the bar is in
contact with the tree. This
will cause kickback.
Cutting with the bottom
edge of the bar, i.e. from
the top of the object
downwards, is...

18 Ð English
SAFETY INSTRUCTIONS
GENERAL SAFETY PRECAUTIONS
1 Chain saws are designed solely for cutting wood. The only
cutting equipment that can be used with this chain saw are
the combinations of bars and chains recommended in the
ÓTechnical dataÓ section.
2 Never use a chain saw if
you are tired, if you have
drunk alcohol, or if you
are taking medication that
affects your vision, your
judgement or your co-
ordination.
3 Always wear suitable protective clothing. See the section
on 
ÓPersonal...

English Ð 19
!
SAFETY INSTRUCTIONS
GENERAL WORKING INSTRUCTIONS
This section describes basic safety rules for
using a chain saw. This information is no
substitute for professional skills and
experience. If you get into a situation where
you feel unsafe, stop and seek expert advice
(look under FORESTRY SERVICES in the
telephone directory).
DO NOT ATTEMPT ANY TASK THAT YOU
FEEL UNSURE OF!
Important
1 Before using a chain saw you must understand the effects of
kickback and what causes it. (See the section...

20 Ð English
!
SAFETY INSTRUCTIONS
Two factors decide whether the chain will jam or the log will
split. The first is how the log is supported and the second is
whether it is in tension.
In most cases you can avoid these problems by cutting in two
stages; from the top and from the bottom of the log. You need
to support the log so that it will not trap the chain or split during
cutting.
If the chain jams in the cut:
STOP THE ENGINE! DonÕt try to pull the saw
free. If you do you may damage the chain
when...