Bosch GTM 12 JL Professional - Manual (Page 42)

42 | English
1 609 92A 0BP | (9.7.13) Bosch Power Tools
– Turn the Allen screw 12 with the Allen key 5 provided while at
the same time pressing the spindle lock 13 until it engages.
– Hold the spindle lock 13 pressed and unscrew the Allen
screw 12 in clockwise direction (left-hand thread!).
– Remove the clamping flange 14.
– Remove the saw blade 7.
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
15.
 Take care during the mounting that the cutting direc-
tion of the teeth (direction of the arrow on the saw
blade) agrees with the direction of the arrow on the
casing!
– Place on the clamping flange 14 and the screw 12.
Press the spindle lock 13 until it engages and tighten the
screw turning in anticlockwise direction.
– Push the lever 11 downward and, at the same time, rotate
the retracting blade guard 20 downward again until the le-
ver engages.
– Screw in and tighten the locking screw 10 again.
Transport (see figure g)
 Before any work on the machine itself, pull the mains
plug.
Before transporting the power tool, the following steps must
be carried out:
– Bring the power tool into the table saw working position.
(see “Working Position”, page 47)
– Position the parallel guide 59 completely over the protec-
tion guard 61.
To lock the parallel guide, push the clamping knob 62
downward.
– Attach the hold-down stick onto the pins 65.
– Insert the lower saw blade cover 64 into the saw table 22.
– Remove all accessories that cannot be mounted firmly to
the power tool.
If possible, place unused saw blades in an enclosed con-
tainer for transport.
– For lifting or transporting, hold the power tool by the re-
cessed grips 4 on the side of the saw table 22.
 The power tool should always be carried by two per-
sons in order to avoid back injuries.
 When transporting the power tool, use only the trans-
port devices and never use the protective devices.
Operation as Chop and Mitre
Saw
 Before any work on the machine itself, pull the mains
plug.
Working Position (see figure A)
If the power tool is still in the condition as delivered or if the
power tool was used as a table saw, then the following steps
must be carried out before using as a chop and mitre saw:
– Loosen both clamping levers 66 below the saw table 57.
– Pull the saw table upward to the stop.
– Hold the saw table in this position and tighten the clamping
levers again.
– Position the parallel guide 59 over the saw blade as a pro-
tective measure.
– Push the tool arm by the handle 18 down a little in order to
relieve the transport safety-lock 37.
– Pull the transport safety-lock 37 completely outward.
– Remove the lower saw blade cover 64 and slide it into the
groove on the right-hand side of the parallel guide 59.
– Guide the tool arm slowly upward.
Preparing for Operation
Extending the Saw Table (see figure B)
Long workpieces must be underlaid or supported at their free
end.
– Loosen both Allen screws 40 with the Allen key 5 provided.
– Pull out the saw table extension 29 to the stop and tighten
the Allen screws again.
Clamping the Workpiece (see figure C)
To ensure optimum working safety, the workpiece must al-
ways be firmly clamped.
Do not saw workpieces that are too small to clamp.
– Press the workpiece firmly against the fence 30.
– Insert the material clamp 21 provided into one of the holes
28 intended for it.
– Loosen the wing bolt 42 and adapt the material clamp to
the workpiece. Tighten the wing bolt again.
– Firmly clamp the workpiece by turning the threaded rod
41 in clockwise direction.
Adjusting the Cutting Angle
To ensure precise cuts, the basic adjustment of the machine
must be checked and adjusted as necessary after intensive
use (see “Checking and Adjusting the Basic Adjustment”,
page 46).
 Always tighten the locking knob 25 firmly before saw-
ing. Otherwise the saw blade can become wedged in the
workpiece.
– Bring the power tool into the chop and mitre saw working
position. (see “Working Position”, page 42)
OBJ_BUCH-1688-004.book Page 42 Tuesday, July 9, 2013 11:59 AM