Bosch GCM 8 SJL Original Instructions Manual page 28

OBJ_BUCH-1736-003.book Page 28 Thursday, August 14, 2014 1:13 PM
28 | English
Dust/Chip Extraction
Dusts from materials such as lead-containing coatings, some
wood types, minerals and metal can be harmful to one's
health. Touching or breathing-in the dusts can cause allergic
reactions and/or lead to respiratory infections of the user or
bystanders.
Certain dusts, such as oak or beech dust, are considered as
carcinogenic, especially in connection with wood-treatment
additives (chromate, wood preservative). Materials contain-
ing asbestos may only be worked by specialists.
– Always use dust extraction.
– Provide for good ventilation of the working place.
– It is recommended to wear a P2 filter-class respirator.
Observe the relevant regulations in your country for the
materials to be worked.
 Prevent dust accumulation at the workplace. Dusts can
easily ignite.
The dust/chip extraction can be blocked by dust, chips or
workpiece fragments.
– Switch the machine off and pull the mains plug from the
socket outlet.
– Wait until the saw blade has come to a complete stop.
– Determine the cause of the blockage and correct it.
External Dust Extraction
For dust extraction, a vacuum hose (size Ø 35 mm) can also
be connected to the chip ejector 2.
– Connect the vacuum hose with the chip ejector 2.
The vacuum cleaner must be suitable for the material being
worked.
When vacuuming dry dust that is especially detrimental to
health or carcinogenic, use a special vacuum cleaner.
Changing the Saw Blade (see figures D1–D4)
 When mounting the saw blade, wear protective gloves.
Danger of injury when touching the saw blade.
Use only saw blades whose maximum permitted speed is
higher than the no-load speed of the power tool.
Use only saw blades that correspond with the characteristic
data given in these operation instructions and that are tested
and marked in accordance with EN 847-1.
Use only saw blades recommended by the tool manufacturer
and suitable for sawing the materials to be cut.
Removing the Saw Blade
– Bring the power tool into the working position.
– Turn hex socket screw 45 with the hex key (5 mm) 34 and
at the same time press the spindle lock 44 until it engages.
– Hold the spindle lock 44 pressed and unscrew the hex
socket screw 45 in clockwise direction (left-hand thread!).
– Remove the clamping flange 46.
– Press locking switch 9 and swing back the retracting blade
guard 11 to the stop.
– Hold the retracting blade guard in this position and remove
the saw blade 12.
– Slowly guide the retracting blade guard downward again.
1 609 92A 0XG | (14.8.14)
Mounting the Saw Blade
If required, clean all parts to be mounted prior to assembly.
– Press locking switch 9, swing back the retracting blade
guard 11 to the stop and hold it in this position.
– Place the new saw blade onto the interior clamping
flange 47.
 When mounting the saw blade, pay attention that the
cutting direction of the teeth (arrow direction on the
saw blade) corresponds with the direction of the arrow
on the blade guard!
– Slowly guide the retracting blade guard downward again.
– Place on the clamping flange 46 and the screw 45.
Press the spindle lock 44 until it engages and tighten the
screw turning in anticlockwise direction.
Operation
 Before any work on the machine itself, pull the mains
plug.
Transport Safety (see figure E)
The transport safety-lock 37 enables easier handling of the
machine when transporting to various working locations.
Releasing the Machine (Working Position)
– Push the tool arm by the handle 8 down a little in order to
relieve the transport safety-lock 37.
– Pull the transport safety-lock 37 completely outward.
– Guide the tool arm slowly upward.
Securing the Machine (Transport Position)
– Loosen the locking screw 33 if tightened. Pull the tool arm
completely to the front and tighten the locking screw
again.
– Screw adjusting screw 4 completely upward.
– To lock the saw table 15, tighten the locking knob 20.
– Press locking switch 9 and slowly guide the tool arm down-
ward by the handle 8.
– Guide the tool arm downward until the transport safety-
lock 37 can be pushed completely inward.
Preparing for Operation
Extending the Saw Table (see figure F)
Long workpieces must be underlaid or supported at their free
end.
The saw table can be extended left and right with the saw-ta-
ble extensions 13.
– Push clamping lever 16 upward.
– Pull out the saw-table extension 13 to the desired length.
– To lock the saw-table extension, push clamping lever 16
down again.
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