Sawing
WARNING!
• Before proceeding to your job, read the following sections. It is
recommended to first practice sawing easy logs. This also
helps you get accustomed to your unit.
• Always follow the safety regulations. The chain saw must only
be used for cutting wood. It is forbidden to cut other types of
material. Vibrations and kickback vary with different materials
and the requirements of the safety regulations would not be
respected. Do not use the chainsaw as a lever for lifting,
moving or splitting objects. Do not lock it over fixed stands.
• It is not necessary to force the saw into the cut. Apply only
light pressure while running the engine at full throttle.
• When the saw chain is caught in the cut, do not attempt to pull
it out by force, but use a wedge or a lever to open the way.
Guard against kickback (Fig. 6)
This saw is equipped with a chain brake that will stop the chain
in the event of kickback if operating properly. You must check the
chain brake operation before each usage by running the saw at full
throttle for 1-2 seconds and pushing the front hand guard forward.
The chain should stop immediately with the engine at full speed. If
the chain is slow to stop or does not stop, replace the brake band
and clutch drum before use.
It is extremely important that the chain brake be checked for proper
operation before each use and that the chain is sharp in order to
maintain the kickback safety level of this saw. Inadequate maintenance,
or incorrect replacement of the bar or chain may increase the risk of
serious personal injury due to kickback.
Felling a tree (Fig. 7)
WARNING!
When you fell a tree, be sure to warn your neighbouring workers
of the danger.
(1) Notch cut
(2) Felling cut
(3) Felling direction
1. Choose the felling direction considering the wind, lean of the tree,
location of heavy branches, ease of job after felling and other
factors.
2. While clearing the area around the tree, arrange a good foothold
and retreat path.
3. Make a notch cut one-third of the way into the tree on the felling side.
4. Make a felling cut from the opposite side of the notch and at a
level slightly higher than the bottom of the notch.
Bucking and limbing
WARNING!
• Always ensure your foothold. Do not stand on the log.
• Be alert to the rolling over of a cut log. Especially when
working on a slope, stand on the uphill side of the log.
• Follow the previous sections instructions “guard against kick
back” to avoid kickback of the saw.
Before starting work, check the direction of bending force inside the
log to be cut. Always finish cutting from the opposite side of bending
direction to prevent the guide bar from being caught in the cut.
A log lying on the ground (Fig. 8)
Saw down halfway, then roll the log over and cut from the opposite
side.
Fig.6
Fig.7
Fig.8
A log hanging off the ground (Fig. 9)
In area A, saw up from the bottom one-third and finish by sawing
down from the top. In area B, saw down from the top-third and
finish by sawing up from the bottom.
Cutting limb of fallen tree (Fig. 10)
First check to which side the limb is bent. Then make the initial cut
from the bent side and finish by sawing from the opposite side.
WARNING!
Be alert to the possibilities of spring back from a cut limb.
Pruning of standing tree (Fig. 11)
Cut up from the bottom, finish down from the top.
WARNING!
• Do not use an unstable foothold or ladder
• Do not overreach.
• Do not cut above shoulder height.
• Always use both hands to grip the saw.
MAINTENANCE & STORAGE
WARNING!
Before cleaning, inspecting or repairing your unit, make sure
the engine has stopped and is cool. Disconnect the spark plug
to prevent accidental starting.
Maintenance after each use
1. Air filter
To access the air filter, remove the air filter cover. To remove the filter,
unscrew the top lid and withdraw the filter element. The element can
be cleaned with a light brush or compressed air.
2. Oiling port
Dismount the guide bar and check the oiling port for clogging.
3. Guide bar
When the guide bar is dismounted, remove saw dust in the bar
groove and the oiling port.
Grease the nose sprocket from the feeding port on the tip of the bar.
(A) Grease port
(B) Sprocket
4. Other
Check for fuel leakage and loose fastenings and damage to major
parts. Especially handle joints and guide bar mounting. If any defects
are found, make sure to have them repaired before operating again.
Periodical service points
1. Cylinder fins
Dust clogging between the cylinder fins will cause overheating of the
engine. Periodically check and clean the cylinder fins after removing
the air cleaner and the cylinder cover.
When installing the cylinder cover, make sure that switch wires and
grommets are positioned correctly in place.
NOTE:
Be sure to block the air intake hole prior to cleaning
2. Spark plug (Fig.12)
Clean the electrodes with a wire brush and reset the gap to 0.65mm
as necessary.
3. Sprocket
Check for cracks and for excessive wear interfering with the chain
drive. If wear is found, replace it with a new one. Never fit a new
chain on a worn sprocket, or a worn chain on a new sprocket.
4. Fuel filter
Using a wire hook, withdraw the filter through the fuel tank filler and
wash with petrol, or replace with new one if required.
Fig.9
Fig.11
Fig.12
Fig.10
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