8. ASSEMBLY
WARNING:
Do not start the chainsaw before
mounting and correctly adjusting the guide bar and
chain.
ATTENTION:
Saw chain is extremely sharp - wear
gloves when handling chain.
8.1 ATTACHING/ADJUSTING
GUIDE
BAR
AND CHAIN - FIGS. 1 - 9
Position the power head as shown (Fig.1). Ensure
the chain brake is disengaged. To disengage, pull
the chain brake lever
towards the front wrap
round handle.
The clutch cover incorporates the clutch and the
adjuster screw. Using the screwdriver
loosen the
chain tension adjuster screw
anti-clockwise
retracting the chain tension adjuster pin
.
With the combination box spanner, remove the two
guide bar locking nuts
and the cross slot screw.
Pull the clutch cover away and off the machine.
Fit the chain behind the clutch and around the drive
sprocket paying particular attention to the cutter
orientation. An incorrectly fitted chain is dangerous.
NOTE: The chain is driven on the top of the guide
bar away from the power head. Stamped on the saw
chain cutters and links is a direction of rotation
arrow. Ensure the drive sprocket teeth have correctly
meshed with the drive links.
12
FIG. 1
FIG. 2
FIG. 3
FIG. 4
FIG. 22
FIG. 23
FIG. 24
9. OPERATION AND USE
The direction can be changed from that intended by
factors such as wind, sloping terrain, tree growth
(leaning, heavy limb structure one side and decay)
etc. Failure to observe these factors or account for
them can result in severe injury or fatality.
Plan an escape route and ensure all scrub, debris
and undergrowth is cleared so an unimpeded
escape can quickly be made to safety if the felling
direction unexpectedly changes.
Delimb the tree up to shoulder height of all
branches. If the tree has large buttress roots
4
also remove these to enable the direction notch to
be cut as close to the ground as possible.
The direction notch
5
should be started at 45º
down into approximately one third the trees
diameter. Cut the bottom of the notch at 90º and
remove the wedge. On the opposite side of the tree
and 5cm higher than the bottom of the notch, the
felling cut
6
should be made at 90º. This cut must
be made in one go and stop 5cm from the back of
the notch. This creates the hinge which is very
important as it helps control the felling. The hinge
7
must be parallel. Use the spiked bumper to
obtain a firm grip and leverage while performing
these cuts.
The use of wedges should be employed to prevent
the saw becoming pinched and to complete the fell
safely.
9.10 DELIMBING - FIG. 24
Refer to general safety instructions for preparatory
and specific warnings.
When removing smaller branches with a single cut,
keep the tree between you and chain.
For larger limbs make three cuts. The initial cut (U)
in the tensioned underside of the limb one third of
the way through. Use a pushing chain (the top of
the guide bar) for this.
The second cut (V) will be made all the way through
with the underside of the guide bar.
The third cut (W) is only necessary if the tree is not
being felled, to leave a neat collar.
On a felled tree always work from butt to tip with
the tree on your right side. Always work with the
trunk between you and the guide bar.
TREE TRUNK
4
TREE TRUNK
DIRECTION OF FALL
7
5cm
5cm
6
5
9
8
:
21