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English | 21
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).
When the log is supported on both ends, cut 1/3 the dia-
meter from the top overbuck. Then make the finished cut by
underbucking 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. Always 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.
u Warning: Switch off and remove plug from mains be-
fore investigating fault.
Problem Possible Cause Corrective Action
Chain saw fails to oper-
ate
Kickback brake is activated Pull back the activation lever for kickback brake
(4) to position , so that the white dot is on the
"I" symbol.
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 in-
termittently
Mains cable defective Check mains cable and have it replaced, if re-
quired
External or internal wiring defect Contact your Bosch Service Centre
On/Off switch (2) defective
Contact your Bosch Service Centre
Saw chain dry No oil in reservoir Refill oil
Vent in oil filler cap (14) clogged Clean oil filler cap (14)
Oil passage clogged Clean oil passage
Brake does not stop
saw chain
Kickback brake/run-down brake defective Contact your Bosch Service Centre
Saw chain/guide bar
hot
No oil in reservoir Refill oil
Vent in oil filler cap (14) clogged Clean oil filler cap (14)
Oil passage clogged Clean oil passage
Chain tension too high Tension saw chain
Dull saw chain Sharpen saw chain or replace
Chain saw rips, vi-
brates, does not saw
properly
Chain tension too loose Tension saw chain
Dull saw chain Sharpen saw chain or replace
Chain worn out Replace saw chain
Chain teeth are facing in the wrong direction Reassemble with chain in correct direction
Maintenance and Cleaning
u Warning! Switch off and remove plug from mains be-
fore adjusting or cleaning. The same applies when the
mains cable is damaged, cut or entangled.
If the replacement of the supply cord is necessary, this has
to be done by Bosch or an authorized Bosch service agent in
order to avoid a safety hazard.
Note: To ensure long and reliable service, carry out the fol-
lowing maintenance regularly.
Regulary check the chain saw for obvious defects such as
loose, dislodged or damaged saw chain and chain bar, loose
fixings and worn or damaged components.
When disassembling the saw chain, take care that the chain
is first loosened with the chain tensioning ring (11). Disas-
sembly of the chain saw without first loosening the saw chain
can damage the chain saw.
Bosch Power Tools F 016 L81 829 | (28.11.2019)
21


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