Bosch GCM 12 GDL Professional Manual Original página 38

38 | English
Removing the Saw Blade
– Bring the power tool into the working position.
– Unscrew locking screw 42 by hand until the linkage 43 can
hang freely.
– Loosen fastening screw 44 (approx. 2 turns) with the hex
key (4 mm) 20.
Do not completely unscrew the screw.
– Loosen the fastening screw 45 (approx. 6 turns) with the
hex key (4 mm) 20.
Do not completely unscrew the screw.
– Pull cover plate 46 off of fastening screw 45 toward the
front and bottom.
– Press locking lever 5 and swing back the retracting blade
guard 8.
Hold the retracting blade guard in this position.
– Hang linkage 43 over fastening screw 45 via a bolt hole.
This holds the retracting blade guard in the open position.
– Turn the hex socket screw 48 with the hex key (6 mm) 20
and at the same time press the spindle lock 47 until it en-
gages.
– Hold the spindle lock 47 pressed and unscrew the hex
socket screw 48 in clockwise direction (left-hand thread!).
– Remove the clamping flange 49.
– Remove the saw blade 40.
Mounting the Saw Blade
If required, clean all parts to be mounted prior to assembly.
– Place the new saw blade onto the interior clamping flange
50.
 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!
– Place on the clamping flange 49 and the screw 48.
Press the spindle lock 47 until it engages and tighten the
screw turning in anticlockwise direction.
– Release linkage 43 from fastening screw 45 and guide the
retracting blade guard down again.
– Slide cover plate 46 under fastening screw 45 again.
– Retighten the fastening screws 45 and 44 again.
– Slide linkage 43 onto its original position and retighten
locking screw 42 by hand again.
Operation
 Before any work on the machine itself, pull the mains
plug.
Transport Safety (see figure A)
The transport safety-lock 31 enables easier handling of the
machine when transporting to various working locations.
Releasing the Machine (Working Position)
– Slightly push down glide arm 28 by handle 4 to release
transport safety-lock 31.
– Pull the transport safety-lock 31 completely outward.
– Slowly guide the glide arm upward.
1 609 92A 0XN | (13.10.14)
Securing the Machine (Transport Position)
– Slide glide arm 28 completely to the rear and secure it in
this position (see "Securing the Glide Arm", page 38).
– Guide the glide arm downward until transport safety-lock
31 can be pushed completely inward.
For additional information on transport, see page 44.
Locking the Glide Arm
The glide mechanism of glide arm 28 can be locked with lock
lever 26. Two glide arm positions are possible:
– Glide arm pushed completely to the rear (for chop-cuts)
– Glide arm pulled completely to the front (for a compact
transport position)
Releasing the Glide Arm (see figure B1)
After releasing the glide arm 28, the complete pulling mecha-
nism is ready for operation.
– Push the lock lever 26 down to the stop.
The clamping wedge of the lock lever releases both bottom
joint parts of the glide arm.
Securing the Glide Arm (see figure B2)
Glide arm pushed completely to the rear:
– Push glide arm 28 toward the rear to the stop.
The two upper joint parts of the glide arm are now in the up-
right position and shut.
– Pull lock lever 26 upward until of the clamping wedge is po-
sitioned between the two bottom joint parts of the glide
arm.
This locks the completely pushed back glide arm 28.
Glide arm pulled completely to the front:
– Pull glide arm 28 forward to the stop.
The glide mechanism is now completely extended.
– Pull lock lever 26 upward until of the clamping wedge is po-
sitioned between the two bottom joint parts of the glide
arm.
This locks the completely forward pulled glide arm 28.
Preparing for Operation
Extending the Saw Table (see figure C)
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 11.
– Push clamping lever 51 inward.
– Pull out saw-table extension 11 to the desired length (max.
250 mm).
– To lock the saw-table extension, push clamping lever 51
outward again.
Extending the Fence (see figure D)
For bevel angles, the fence extensions 9 must be moved.
– Turn clamping lever 52 toward the front.
– Pull the fence extension 9 completely outward.
– To lock the adjustable fence, push clamping lever 52 down
again.
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