Maintenance And Service; Maintenance And Cleaning - Bosch Professional GKE 35 BCE Manual Original

OBJ_BUCH-716-005.book Page 29 Wednesday, December 3, 2014 11:12 AM
Problem Possible Cause
Saw chain dry No oil in reservoir
Vent in oil filler cap 4 clogged
Oil passage clogged
Brake does not stop saw Kickback brake/run-down brake defective Contact your Bosch Service Centre
chain
Saw chain/guide bar hot No oil in reservoir
Vent in oil filler cap 4 clogged
Oil passage clogged
Chain tension too high
Dull saw chain
Chain saw rips, vibrates, Chain tension too loose
does not saw properly
Dull saw chain
Chain worn out
Chain teeth are facing in the wrong direc-
tion

Maintenance and Service

Maintenance and Cleaning

 Warning! Switch off, remove plug from mains before
adjusting cleaning or if the cable is cut, damaged or en-
tangled.
 For safe and proper working, always keep the machine
and ventilation slots clean.
If the replacement of the supply cord is necessary, this has to
be done by Bosch or an authorized Bosch service agent in or-
der to avoid a safety hazard.
Note: To ensure long and reliable service, carry out the follow-
ing 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 13. Disassembly
of the chain saw without first loosening the saw chain can
damage the chain saw.
Check that covers and guards are undamaged and correctly
fitted. Carry out necessary maintenance or repairs before us-
ing.
Note: Before returning the chain saw, ensure all oil in the oil
reservoir has been emptied. For this, remove the sieve from
the reservoir, empty the reservoir and replace the sieve again.
Replacing/Changing the Saw Chain and Chain Bar
(see figure A)
Check the saw chain and chain bar according to section "Ten-
sioning the Saw Chain".
The guide slot around the chain bar will wear with time. When
replacing the saw chain, turn the chain bar by 180° to allow
even wear. The chain tensioning catch 22 must also be re-
mounted on the chain bar.
Bosch Power Tools
Corrective Action
Refill oil
Clean oil filler cap 4
Clean oil passage
Refill oil
Clean oil filler cap 4
Clean oil passage
Tension saw chain
Sharpen saw chain or replace
Tension saw chain
Sharpen saw chain or replace
Replace saw chain
Reassemble with chain in correct direction
Check the drive sprocket 18. If it is worn out or damaged due
to strain, have it exchanged by an authorized Bosch after-
sales service.
Sharpening the Saw Chain
Have your chain sharpened professionally at your authorized
Bosch after-sales service or sharpen the chain yourself using
the Bosch sharpening kit or the Dremel Multi power tool with
the appropriate grinder (1453). Observe the sharpening in-
structions provided with the sharpening kit.
Checking the Automatic Oiler
Proper functioning of the automatic saw chain oiler can be
checked by running the chain saw and pointing the tip of the
chain bar towards a piece of cardboard or paper on the
ground. Do not touch the ground with the chain and ensure a
safety clearance of 20 cm. If an increasing oil pattern devel-
opes, the automatic oiler is operating fine. If there is no oil
pattern despite a full oil reservoir, see section "Troubleshoot-
ing" or contact your authorized Bosch after-sales service.
After Use/Storage
Clean the moulded plastic housing of the chain saw using a
soft brush and clean cloth. Do not use water, solvents or pol-
ishes. Remove all debris, especially from the motor cooling
vents.
After 1 – 3 hours of use, remove the cover 15, the chain bar
11 and the saw chain 10, and clean them using a brush.
Clean the area under the cover 15, the drive sprocket 18 and
the chain bar assembly from adherant debris using a brush.
Clean the oil outlet 19 with a clean cloth.
If the chain tensioning mechanism in the cover 15 becomes
difficult to operate, remove the protective lid 27, turn the
locking knob 14 and the chain-tensioning ring 13 against
each other, so that debris is loosened from the mechanism
and can be discarded. Carefully strike or tap out debris from
the cover 15. If the mechanism is heavily clogged, use a soft
brush or compressed air for cleaning. Do not use tools of any
kind. (see figure J)
English | 29
1 609 92A 11D | (3.12.14)