Manual Bosch PST670 (page 12 of 72) (English, German, Dutch, Danish, French, Italian, Portuguese, Swedish, Turkish, Spanish, Norwegian, Finnish)

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12 | English

2 609 005 256 | (3.8.11) Bosch Power Tools

– 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.

f Prevent dust accumulation at the workplace. Dusts can

easily ignite.

Connecting the Dust Extraction

Place a vacuum hose 4 (accessory) onto the vacuum connec-

tion 5. Connect the vacuum hose 4 with a vacuum cleaner (ac-

cessory). An overview for the connection of various vacuum

cleaners can be found at the end of these instructions.

Switch the saw dust blower off when a dust extraction system

is connected (see “Sawdust Blower Device”).

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.

Operation

Operating Modes

f Before any work on the machine itself, pull the mains

plug.

Adjusting the Cutting Angle (see figures B and C)

The base plate 6 can be swivelled by 45° to the left or right for

mitre cuts.

Insert a saw blade 9.

Loosen the screw 13 and lightly slide the base plate 6 toward

the vacuum connection 5.

For adjustment of precise mitre angles, the base plate has ad-

justment notches on the left and right at 0°, 22.5° and 45°.

Swivel the base plate 6 to the desired position according to

the scale 14. Other mitre angles can be adjusted using a pro-

tractor.

Afterwards, push the base plate 6 to the stop in the direction

of the saw blade 9.

Position the holder for the guide roller 12 in such a manner

that the guide roller 8 faces against the back of the saw blade.

Precise cuts are possible only when the guide roller faces

tightly against the back of the saw blade.

Tighten the screw 13 again.

Offsetting the Base Plate (see figure B)

For sawing close to edges, the base plate 6 can be offset to

the rear.

Insert a saw blade 9.

Loosen the screw 13 and slide the base plate 6 toward the

vacuum connection 5 to the stop.

Position the holder for the guide roller 12 in such a manner

that the guide roller 8 faces against the back of the saw blade.

Precise cuts are possible only when the guide roller faces

tightly against the back of the saw blade.

Tighten the screw 13 again.

Sawing with the base plate 6 offset is possible only with a mi-

tre angle of 0°.

Sawdust Blower Device

With the air jet of the sawdust blower device 7, the cutting line

can be kept free of dust and chips.

Switching on the sawdust blower device: For cuts in materials

with high removal rate, such as in wood, plastic, etc., push the

switch 7 to position “I”.

Switching off the sawdust blower device: For cuts in metal

and when a dust extraction system is connected, push the

switch 7 to position “0”

Starting Operation

f Observe correct mains voltage! The voltage of the pow-

er source must agree with the voltage specified on the

nameplate of the machine. Power tools marked with

230 V can also be operated with 220 V.

Switching On and Off

To start the machine, press the On/Off switch 2.

To lock the On/Off switch 2, keep it depressed and push the

lock-on button 1 to the right or left.

To switch off the machine, release the On/Off switch 2. When

the On/Off switch 2 is locked, press it first and then release it.

Working Advice

f Before any work on the machine itself, pull the mains

plug.

f When working small or thin work pieces, always use a

sturdy support or a saw table (accessory).

Saw with moderate pressure in order to achieve optimal and

precise cutting results.

For long and straight cuts in thick wood (>40 mm), the cut-

ting line can become inaccurate. In this case, using a Bosch

circular saw is recommended to achieve accurate cuts.

Coolant/Lubricant

When sawing metal, coolant/lubricant should be applied

alongside cutting line because of the material heating up.

Maintenance and Service

Maintenance and Cleaning

f Before any work on the machine itself, pull the mains

plug.

f For safe and proper working, always keep the machine

and ventilation slots clean.

Clean the saw blade holder regularly. For this, remove the saw

blade from the machine and lightly tap out the machine on a

level surface.

Heavy contamination of the machine can lead to malfunc-

tions. Therefore, do not saw materials that produce a lot of

dust from below or overhead.

f In extreme conditions, always use dust extraction as

far as possible. Blow out ventilation slots frequently

and install a residual current device (RCD). When work-

ing metals, conductive dust can settle in the interior of the

power tool. The total insulation of the power tool can be im-

paired.

OBJ_BUCH-343-006.book Page 12 Wednesday, August 3, 2011 11:55 AM

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Bosch PST670 Manual

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