Bosch GKE 35 BCE 601597603 [28/374] Troubleshooting
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Bosch GKE 35 BCE 601597603 [28/374] Troubleshooting

Bosch GKE 35 BCE 601597603 [28/374] Troubleshooting
28 | English
1 609 92A 11D | (3.12.14) Bosch Power Tools
When cutting and felling operations are being performed by
two or more persons at the same time, the felling operations
should be separated from the cutting operations by a distance
of at least twice the height of the tree being felled. Trees
should not be felled in a manner that would endanger any per-
son, strike any utility line or cause any property damage. If the
tree does make contact with a utility line, the company should
be notified immediately.
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.
An escape path () should be planned and cleared as neces-
sary before cuts are started. The escape path should extend
back and diagonally to the rear of the expected line of fall.
Before felling is started, consider the natural lean of the tree,
the location of larger branches and the wind direction to judge
which way the tree will fall.
Remove dirt, stones, loose bark, nails, staples, and wire from
the tree.
Notching undercut: Make the notch (X–W) 1/3 the diame-
ter of the tree, perpendicular to the direction of fall. Make the
lower horizontal notching cut first. This will help to avoid
pinching either the saw chain or the guide bar when the sec-
ond notch is being made.
Felling back-cut: Make the felling back-cut (Y) at least
50 mm higher than the horizontal notching cut. Carry out the
felling back-cut parallel to the horizontal notching cut. Make
the felling back-cut so that enough wood is left to act as a
hinge. The hinge-wood keeps the tree from twisting and fall-
ing in the wrong direction. Do not cut through the hinge.
As the felling gets close to the hinge, the tree should begin to
fall.
– If there is any chance that the tree may not fall in the de-
sired direction or may rock back and bind the saw chain,
stop cutting and switch the chain saw off. Use wedges (Z)
of wood, plastic or aluminium to open the cut and drop the
tree along the desired line of fall.
– When the tree does not begin to fall when the felling gets
close to the hinge, remove the chain saw from the cut,
switch off and make the tree fall by driving a wedge (Z) into
the horizontal cut.
When the tree begins to fall, remove the chain saw from the
cut (if not already taken place), stop the motor, and put the
chain saw down. Leave the danger area via the retreat path
planned. Be alert for overhead limbs falling and watch your
footing.
Limbing a Tree (see figure K)
Limbing is removing the branches from a fallen tree. When
limbing, leave larger lower limbs to support the log off the
ground. Remove the small limbs in one cut as illustrated in the
figure. Branches under tension should be cut from the bottom
up to avoid binding the chain saw.
Bucking a Log (see figures L –O)
Bucking is cutting a log into lengths. It is important to make
sure your footing is firm and your weight is evenly distributed
on both feet. When possible, the log should be raised and sup-
ported by the use of limbs, logs or chocks. Follow the simple
directions for easy cutting.
When the log is supported along its entire length, it is cut from
the top (overbuck).
When the log is supported on one end, cut 1/3 the diameter
from the underside (underbuck). Then make the finished cut
by overbucking to meet the first cut.
When the log is supported on both ends, cut 1/3 the diameter
from the top overbuck. Then make the finished cut by under-
bucking the lower 2/3 to meet the first cut.
When bucking on a slope, always stand on the uphill side of
the log. When “cutting through”, release the cutting pressure
near the end of the cut without relaxing your grip on the chain
saw handles in order to maintain complete control. Don’t let
the chain contact the ground. After completing the cut, wait
for the saw chain to stop before you move the chain saw. Al-
ways stop the chain saw motor before moving from tree to
tree.
Troubleshooting
The following chart lists problem symptoms, possible causes and corrective action, if your machine does not operate properly.
If these do not identify and correct the problem, contact your service agent.
Warning: Switch off and remove plug from mains before investigating fault.
Problem Possible Cause Corrective Action
Chain saw fails to operate Kickback brake is activated Pull activation lever for kickback brake (hand
guard) 5 back in position , so that the red dot 26
is covered
Plug not connected Connect plug
Mains socket faulty Use another socket
Fuse faulty/blown Replace fuse
Extension cable damaged Try without extension cable
Chain saw operates intermit-
tently
Mains cable defective Check mains cable and have it replaced, if required
External or internal wiring defect Contact your Bosch Service Centre
On/Off switch 3 defective Contact your Bosch Service Centre
OBJ_BUCH-716-005.book Page 28 Wednesday, December 3, 2014 11:12 AM

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