Gardenline GPCS-42cc User Manual - page 8
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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 possible.
Never saw completely through the trunk. Always leave a
hinge.
The hinge guides the tree. If the trunk is completely 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 prevent the
guidebar from binding in the felling cut if you have mis-
judged the falling direction. Make sure no bystanders have
entered the range of the falling tree before you push it over.
FELLING CUT:
1.
Use wooden or plastic wedges (A) to prevent binding
the bar or chain (B) 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).
• 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.
• BUCKING
Bucking is cutting a fallen log into lengths. Make sure you
have a good footing and stand uphill of the log when cutting
on sloping ground. If possible, the log should be supported
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 pinch-
ing 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 (over-
buck), being careful to avoid cutting into the ground
(Fig. 13A).
Fig. 11A
B
A
WARNING: Do not cut down a tree during high or
changing winds or if there is a danger to proper-
ty. 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.
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
WARNING: Before making the final cut,
always recheck the area for bystanders,
animals or obstacles.
Fig. 11D
Fig. 11C
A
B
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).
WARNING: Never cut tree limbs while
standing on tree trunk.
Fig. 12
Fig. 13A
Fig. 13B
Fig. 13C
•
RE-STARTING A WARM ENGINE
1.
Make sure the switch is in the ON position.
2.
Pull the starter rope rapidly 4 times. The engine should
start.
3.
If unable to start engine, please follow engine PRE-
START CHECKS procedure to cold start engine.
•
TO STOP ENGINE
1.
Release trigger and allow engine to return to idle
speed.
2.
Press STOP switch down to stop engine. (Fig. 9G)
NOTE: For emergency stopping, simply activate chain
brake and move STOP switch down.
•
CHAIN BRAKE OPERATIONAL TEST
Test the chain brake periodically to ensure proper function.
Perform a chain brake test prior to initial cutting, following
extensive cutting, and definitely following any Chain brake
service.
TEST CHAIN BRAKE AS FOLLOWS (Fig. 10) :
1.
Place saw on a clear, firm, flat surface.
2.
Start engine.
3.
Grasp the rear handle (A) with your right hand.
4.
With your left hand, hold the front handle (B) [not chain
brake lever (C)] firmly.
5.
Squeeze the throttle trigger to 1/3 throttle, then
immediately activate the chain brake lever (C).
6.
Chain should stop abruptly. When it does, immediately
release the throttle trigger.
7.
If chain brake functions properly, turn the engine off
and return the chain brake to the DISENGAGED posi-
tion.
•
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 evidenced 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 tight-
en it. New chain will require adjustment after about 5 minutes
of operation.
•
AUTOMATIC OILER
Your chain saw is equipped with an automatic gear driven
oiler system. The oiler automatically delivers the proper
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 approximately the
same time as the fuel supply runs out.
•
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: Never force the job and never force the
chainsaw.
Make a number of smaller cuts if necessary rather than one
large forced cut.
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.
Fig. 9B
Fig. 9C
A
B
Fig. 9D
Fig. 9E
G
Fig. 9F
Fig. 9G
H
WARNING: Activate the chain brake slowly
and deliberately. Keep the chain from touch-
ing anything; don t let the saw tip forward.
WARNING: If chain does not stop, turn engine
off and take your unit to the nearest Gardenline
Authorized Service Center for service.
Fig. 10
A
B
C
GENERAL CUTTING INSTRUCTIONS
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.
WARNING: Only start the machine as the person shows in the fig-
ure (9D). Always follow the next steps before start sawing!
• Always place the machine on the ground to avoid the machine
can drop during starting.
• When the engine is started, depress and release the trigger: now
the stick (throttle latch) on the main switch (throttle trigger) is
released.
• Now the saw turns off automatically ones the finger is taken off
the switch.