9. GENERAL MAINTENANCE8. CUTTING APPLICATIONS
MAINTENANCEAPPLICATIONS
Bucking is cutting a log into lengths for
easier handling. To saw a log lying on the
ground, rst saw halfway, then roll the log
over and cut from the opposite side.
To saw the end of a log supported off the
ground, rst saw up from the bottom one-
third through the log then nish by sawing
down from the top. To saw a log in the
middle of two supports holding it off the ground, rst saw down from the
top one-third through the log then nish by sawing up from the bottom.
Limbing is the process of removing the
branches from a fallen tree. Check the
direction in which a branch will bend
before cutting it. Always cut on the
opposite side to the bending direction
so that the guide bar is not pinched in
the cut. For large limbs that cannot be
removed in one cut, make an initial cut from the bent side and nish
by sawing from the opposite direction. Do not remove limbs that are
supporting the fallen tree on the ground until the tree has been cut into
lengths.
Pruning is the removal of a limb or branch
from a standing tree.
Felling a tree
Decide the direction in which you wish
the tree to fall, taking into account the
direction of the wind, the position of
branches, lean of the tree, ease of
subsequent limbing and bucking and
other factors prevalent at the time.
Chain Sharpening
Chain File: 3.96mm (5/32”)
Chain Pitch: 9.53mm (3/8”)
Chain Gauge: 1.3mm (0.050”)
Sharpen the chain regularly to maintain
optimum performance of the saw. Signs
of a dull chain are:
• The sawdust becomes powder-like
• Extra force is required to execute a cut
• The cut does not track in a straight line
• Increased vibration
Sharpen each cutter using a chain le. Always use outward strokes and
maintain a 30° angle between the chain and le. After sharpening, the
cutters must all have the same width and length.
After every 3 – 4 uses get an authorised repair centre to professionally
sharpen your chain. They have the special tools necessary to ensure
the correct cutting angles and depths.
Chain tension
Check the chain tension frequently and adjust as often as necessary.
(see Tensioning the chain)
Maintaining the guide bar
1. Remove any sawdust from the guide bar, including the groove.
Oil and sawdust combine and emit a burning smell during operation if
the blade is not regularly cleaned.
2. Make sure that the oil port is not clogged.
Grease the nose sprocket at the tip of the
guide bar.
3. Check for oil leakage and loose fastenings,
especially those securing the handles and
the guide bar.
4. Clean any dust away from the cooling vents as clogged vents can
cause overheating. By maintaining a clean unit you will extend the
useful life of the chain and the tool in general.
WARNING! FELLING A TREE SHOULD ONLY BE
DONE BY TRAINED OPERATORS.
WARNING! ALWAYS KEEP A BALANCED STANCE.
DO NOT STAND ON THE LOG. BE ALERT TO
THE FACT THAT THE LOG MAY ROLL OVER. WHEN
WORKING ON A SLOPE, ALWAYS STAND ON THE UP
HILL SIDE OF THE LOG.
WARNING! DO NOT USE AN UNSTABLE FOOT-
HOLD OR LADDER. DO NOT OVERREACH. DO
NOT SAW ABOVE SHOULDER HEIGHT. ALWAYS USE
BOTH HANDS TO HOLD THE SAW. FIRST CUT UP FROM
THE BOTTOM AND FINISH DOWN FROM THE TOP.
WARNING! ENSURE THE CHAINSAW IS TURNED
OFF & DISCONNECTED FROM THE POWER
SUPPLY BEFORE PERFORMING ANY OF THE
FOLLOWING OPERATIONS.
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