Bosch GST Professional 85 PB Original Operating Instructions page 10

OBJ_BUCH-689-001.book Page 10 Thursday, April 24, 2008 3:03 PM
10 | English
Inserting/Replacing the Saw Blade
(see figure A)
Before inserting the saw blade 11, set the adjust-
ing lever for orbital action 8 to setting III .
Pull the rotating handle 1 upward to the stop.
Turn the rotating handle 1 approx. three turns
in the direction of the arrow.
Insert the saw blade 11 lateral to the cutting
direction into the stroke rod 13.
Turn the saw blade 11 so that the toothing
faces toward the cutting direction. Pull the saw
blade 11 a little downward until it engages.
While inserting the saw blade, pay attention
that the back of the saw blade is positioned in
the groove of the guide roller 10.
Turn the rotating handle 1 in the direction of
the arrow until a click can be heard.
Push the rotating handle 1 downward to the
1. stop. Continue turning the rotating handle
1 to the starting position and then push it all
the way down.
Check the tight seating of the saw blade.
A loose saw blade can fall out and lead to
injuries.
For removal of the saw blade, proceed in reverse
order.
Dust/Chip Extraction
Dusts from materials such as lead-containing
coatings, some wood types, minerals and
metal can be harmful to one's health. Touch-
ing or breathing-in the dusts can cause aller-
gic reactions and/or lead to respiratory infec-
tions of the user or bystanders.
Certain dusts, such as oak or beech dust, are
considered as carcinogenic, especially in con-
nection with wood-treatment additives (chro-
mate, wood preservative). Materials containing
asbestos may only be worked by specialists.
– Provide for good ventilation of the working
place.
– It is recommended to wear a P2 filter-class
respirator.
Observe the relevant regulations in your coun-
try for the materials to be worked.
1 609 929 N43 | (24.4.08)
Splinter Guard (see figure B)
The splinter guard 14 (accessory) can prevent
fraying of the surface while sawing wood. The
splinter guard can only be used for certain saw
blade types and only for cutting angles of 0°.
When sawing with the splinter guard, the base
plate 9 must not be moved back for cuts that are
close to the edge.
Press the splinter guard 14 from the bottom into
the base plate 9.
Operation
Operating Modes
Before any work on the power tool itself,
pull the mains plug.
Orbital Action Settings
The four orbital action settings allow for optimal
adaptation of cutting speed, cutting capacity and
cutting pattern to the material being sawed.
The orbital action can be adjusted with the ad-
justing lever 8, even during operation.
Setting 0
No orbital action
Setting I
Small orbital action
Setting II
Medium orbital action
Setting III
Large orbital action
The optimal orbital action setting for the respec-
tive application can be determined through practi-
cal testing. The following recommendations apply:
– Select a lower orbital action setting (or switch
it off) for a finer and cleaner cutting edge.
– For thin materials such as sheet metal, switch
the orbital action off.
– For hard materials such as steel, work with
low orbital action.
– For soft materials and when sawing in the di-
rection of the grain, work with maximum or-
bital action.
Adjusting the Cutting Angle (see figure C)
The base plate 9 can be swivelled by 45° to the
left or right for bevel cuts.
Loosen the screw 16 and lightly slide the base
plate 9 in the direction of the saw blade 11.
Bosch Power Tools