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C
A
B
Fig. 10
•
SAW CHAIN / BAR LUBRICATION
Adequate lubrication of the saw chain is essential at all
times to minimize friction with the guide bar.
Never starve the bar and chain of oil. Running the saw
with too little oil will decrease cutting efficiency, shorten
saw chain life, cause rapid dulling of chain, and cause
excessive wear of bar from overheating. Too little oil is evi-
denced by smoke, bar discoloration or pitch build-up.
NOTE: Saw chain stretches during use, particularly when
it is new, and it will occasionally be necessary to adjust
and tighten it. New chain will require adjustment after
about 5 minutes of operation.
•
AUTOMATIC OILER
Your chain saw is equipped with an automatic clutch driv-
en oiler system. The oiler automatically delivers the prop-
er amount of oil to the bar and chain. As the engine speed
increases, so does the oil flow to the bar pad. There is no
flow adjustment. The oil reservoir will run out at approxi-
mately the same time as the fuel supply runs out.
WARNING: Don't put pressure on the saw
when reaching the end of the cut. The pres-
sure may cause the bar and chain to rotate. If
the rotating chain strikes some other object,
a reactive force may cause moving chain to
strike the operator.
GENERAL CUTTING INSTRUCTIONS
•
FELLING
Felling is the term for cutting down a tree. Small trees up
to 6-7 inches (15-18cm) in diameter are usually cut in a
single cut. Larger trees require notch cuts. Notch cuts
determine the direction the tree will fall.
FELLING A TREE:
WARNING: A retreat path (A) should be
planned and cleared as necessary before
cuts are started. The retreat path should
extend back and diagonally to the rear of the
expected line of fall, as illustrated in Fig. 11A
CAUTION: If felling a tree on sloping ground,
the chain saw operator should keep on the
uphill side of the terrain, as the tree is likely to
roll or slide downhill after it is felled.
NOTE: Direction of fall (B) is controlled by the notching
cut. Before any cuts are made, consider the location of
larger branches and natural lean of the tree to determine
the way the tree will fall.
B
A
Fig. 11A
WARNING: Do not cut down a tree during
high or changing winds or if there is a danger
to property. Consult a tree professional. Do
not cut down a tree if there is a danger of
striking utility wires; notify the utility company
before making any cuts.
GENERAL GUIDELINES FOR FELLING TREES:
Normally felling consists of 2 main cutting operations,
notching (C) and making the felling cut (D).
Start making the upper notch cut (C) on the side of the
tree facing the felling direction (E). Be sure you don t make
the lower cut too deep into the trunk.
The notch (C) should be deep enough to create a hinge
(F) of sufficient width and strength. The notch should be
wide enough to direct the fall of the tree for as long as pos-
sible.
WARNING: Never walk in front of a tree that
has been notched.
Make the felling cut (D) from the other side of
the tree and 1.5 - 2.0 inches (3-5 cm) above
the edge of the notch (C) (Fig. 11B)
Fig. 11B
Never saw completely through the trunk. Always leave a
hinge. The hinge guides the tree. If the trunk is complete-
ly cut through, control over the felling direction is lost.
Insert a wedge or felling lever in the cut well before the
tree becomes unstable and starts to move. This will pre-
vent the guidebar from binding in the felling cut if you have
misjudged the falling direction. Make sure no bystanders
have entered the range of the falling tree before you push
it over.
WARNING: Before making the final cut,
always recheck the area for bystanders,
animals or obstacles.
41
GB
FELLING CUT:
1.
Use wooden or plastic wedges (G) to prevent binding
the bar or chain (H) in the cut. Wedges also control
felling (Fig. 11C).
2.
When diameter of wood being cut is greater than the
bar length, make 2 cuts as shown (Fig. 11D).
B
A
Fig. 11C
WARNING: As the felling cut gets close to
the hinge, the tree should begin to fall. When
tree begins to fall, remove saw from cut, stop
engine, put chain saw down, and leave area
along retreat path (Fig. 11A).
• LIMBING
Limbing a tree is the process of removing the branches
from a fallen tree. Do not remove supporting limbs (A) until
after the log is bucked (cut) into lengths (Fig. 12).
Branches under tension should be cut from the bottom up
to avoid binding the chain saw.
WARNING: Never cut tree limbs while stand-
ing on tree trunk.
Fig. 12
Fig. 13B
• BUCKING
Bucking is cutting a fallen log into lengths. Make sure you
have a good footing and stand uphill of the log when cut-
ting on sloping ground. If possible, the log should be sup-
ported so that the end to be cut off is not resting on the
ground. If the log is supported at both ends and you must
cut in the middle, make a downward cut halfway through
the log and then make the undercut. This will prevent the
log from pinching the bar and chain. Be careful that the
chain does not cut into the ground when bucking as this
causes rapid dulling of the chain.
When bucking on a slope, always stand on the uphill side.
1.
Log supported along entire length: Cut from top
(overbuck), being careful to avoid cutting into the
ground (Fig. 13A).
2.
Log supported on 1 end: First, cut from bottom
(underbuck) 1/3 diameter of log to avoid splintering.
Second, cut from above (overbuck) to meet first cut
and avoid pinching (Fig. 13B).
3.
Log supported on both ends: First, overbuck 1/3
diameter of log to avoid splintering. Second, under-
buck to meet first cut and avoid pinching (Fig. 13C).
NOTE: The best way to hold a log while bucking is to use
a sawhorse. When this is not possible, the log should be
raised and supported by the limb stumps or by using sup-
porting logs. Be sure the log being cut is securely sup-
Fig. 11D
ported.
• BUCKING USING A SAWHORSE
For personal safety and ease of cutting, the correct posi-
tion for vertical bucking is essential (Fig. 14).
VERTICAL CUTTING:
A.
Hold the saw firmly with both hands and keep the saw
to the right of your body while cutting.
B.
Keep the left arm as straight as possible.
C.
Keep weight on both feet.
CAUTION: While the saw is cutting, be sure
the chain and bar are being properly lubricat-
ed.
A
Fig. 13A
C
Fig. 14
Fig. 13C
42
GB
B
600mm
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