1 609 92A 10Z | (10.11.1 4) Bosch Power Tools
14 | English
Declaration of Conformity
We declare under our sole responsibility that the product
described under “Technical data ” complies with all applica-
ble provisions of the dire ctive 2006/42/EC includ ing its
amendments and is in conformity with the following stand-
ards: EN 792-13.
Technical file (2006/42/EC) at:
Robert Bosch GmbH, PT/ETM9 ,
70764 Leinfelden-Echterdingen, GERMANY
Robert Bosch GmbH, Power Too ls Division
70764 Leinfelden-Echt erdingen, GERMANY
Leinfelden, 1 2.11.2014
Assembly
Connecting the Air Supply (see figu re A)
Make sure that the pressure of the compressed- air system
is below the maximum permitted rated pressure of the
pneumatic tool. Firstly, set the air pr essure to the lower
value of the recommended rated pressure (see “T echnical
Data”).
When in doubt, c heck the press ure at the air inlet w ith a
pressure ga uge with th e pneumatic t ool switc hed on.
For maximum pe rformance, t he values for t he supply-air
hose 13 (connection thread, maximum operating pres-
sure, inner ho se diameter, maximu m hose length; see
“Technical Data ”) must be observ ed.
The compressed air supplied sho uld be free of foreign ma-
terial and moisture to protec t the tool from damage, c on-
tamination, and the fo rmation of rust .
All fittings, connecting lines and hoses must be dimen-
sioned for t he pressure a nd the required a ir volume.
Avoid restriction s in the air supply, e. g., from pinching,
kinking, or stretching!
Connecting the Air Supply to the Pneumatic Tool
– E mpty the magazine 8.
(See “Emptying the Magaz ine”, page 14)
For the following worksteps, a fastener can be dis-
charged when interior pa rts of the pneumatic tool are
not in the star ting positi on due to repairs, maintenance
or transport.
– C onnect the air c onnector 6 with a supply -air hose 13
equipped with an air-connection coupling 12.
– C heck the proper function by plac ing the outlet 11 or
the rubber w orkpiece protector 1 of the pneumatic to ol
onto a piece of scrap wo od or wood material, and dis-
charging once or twice.
Loading the Magazine (see figures B1 – B2)
Disconnect the air supply before making
any adjustments, changing access ories,
or placing the pneumati c tool aside. This
safety measure prevents ac cidental start-
ing of the pneumatic tool.
Use only original Bosch acces sories (see “Technical
Data”). Th e precisio n parts of t he pneumat ic tool such
as the magaz ine, the out let and the shot duct are
matched to Bosch staples, nails and brads. Other man-
ufacturers use other steel qualities and sizes.
Using fasteners not p ermitted, can damage the pneu-
matic tool and cause injurie s.
While loading the magazine, hold the pneumatic tool in
such a manner that the ou tlet 11 is not pointed at your own
body or at other persons.
– Pull back the magazine slider 7 until it engages at the
rear.
Note: The magazine slider must slide back with only low
force (finge r-pressure). A tight-running magazine slider
causes the nails to be driven in at an incorrect a ngle.
– C lean and lubricate the magazine slider 7 as require d
and make sure that the magazine 8 is not dirty/soiled.
– Insert a fitting nail strip 14.
D o n o t u s e n a i l s t r i p s w i t h l e s s t h a n 5 n a i l s . D o n o t i n s e r t
more t han 2 nail s trips . Make sure that t he hea ds of t he
nails do not overlap.
GSN 90-34 DK: With this pneumatic tool, a lock function
of the magazine slider prevents the last nails from being
discharged. Approx. 7 na ils remain in the magazine.
– Complet ely pull ba ck the magazi ne slider 7 once more
to free the lock.
– Carefully guide the magazine slider to the front until it
touches the nail strip.
Make sure that the magazine slider is slid beyond th e
head of the last nail.
Note: Do not let the magazine slider snap back without
guiding it. Otherwise, the magazine slider could become
damaged, an d there is danger of your fing ers bein g caught
or pinched.
Operation
Actuation systems
The pneumatic tool can be operated w ith two different ac-
tuations systems:
– Single actuation with safety run
With this a ctuation sy stem, the d ischarge lock-off 2
must first be firmly pressed against the wor kpiece. A
fastener is not discharged until the trigger 10 is pulled.
Afterwards, fur ther discharging procedures ca n only be
actuated, when the trigger and the discharge lock-off
have first been set back to the starting position.
– Contact actuation
With this actuation system, the trigger 10 must be
pulled first. A fastener i s always disc harged when the
discharge lock-off 2 is firmly pressed against the work-
piece whi le the tri gger is pre ssed.
This enables a higher working speed to be achieved.
The actuat ion system is s et via the sele ctor switc h 9.
Starting Oper ation
Disconnect the air supply before making
any adjustments, changing accessori es,
or placing the pneumatic tool aside. This
safety measure pr events accidental start-
ing of the pneumatic tool.
Working with Single Actuation (see figure C)
– Press selector switch 9 inward and at the same time piv-
ot it to the bottom position until it engages.
The actuation system “single
actuatio n” is set.
– Release the selector switch 9 ag ain.
– Firmly position the outlet 11 or the rubber w orkpiece
protector 1 on the workpiece until discharge lock-off 2
is pressed in completely.
– Afterwards, briefly press trigg er 10 and release again.
A nail is discharged.
– Allow the pneumatic tool to bounce back from the work-
piece.
– For another driving procedur e, completely lift the pneu-
matic tool from the workpiece and po sition it firmly at
the next desire d location.
Working w ith Cont act Actu ation (s ee figure D )
– Press selector switch 9 inward and at the same time piv-
ot it to the upper position until it engages.
The actuat ion system
“contact actuation” is
set.
– Release the selector switch 9 ag ain.
– Press and hold the trigger 10.
– Firmly position the outlet 11 or the rubber w orkpiece
protector 1 on the workpiece until discharge lock-off 2
is pressed in completely.
A nail is discharged.
– Allow the pneumatic tool to bounce back from the work-
piece.
– For another driving procedur e, completely lift the pneu-
matic tool from the workpiece and po sition it firmly at
the next desire d location.
– Move the pneumatic to ol uniformly over the wor kpiece
by lifting it off and applying it again.
Each time when applying the pn eumatic tool while the
discharge lock-off is pressed in, a nail will be dis-
charged.
– As soon as the desired amount of nails have been driven
in, release trigg er 10 again.
Working Advice
Disconnect the air supply before making
any adju stments, changing accessor ies,
or placing the pneumatic tool aside. This
safety measure p revents acc idental star t-
ing of the pneumatic tool.
Check the proper function of th e safety and actuation de-
vices, and the tight seating of all screws and nuts each time
before using.
Disconnect a defective or not properly operating pneumat-
ic tool immediately from of the air supply and contact an
authorised service agent for Bosch power tools.
Do not perform any incor rect manipula tions on th e pneu-
matic tool. Do not disassemble or block any components of
the pneumatic tool, such as the discharge lock-off.
Do not carry out “emergency repairs” with unsuitable
means. The pneumatic tool is to be maintained regularly
and properly (see “M aintenance and Cleaning” , page 15).
Avoid any weakening a nd damage whatsoever of the pne u-
matic tool, e.g., thro ugh:
– Imprinting or engraving,
– Retrofitting measures not approved by the manufactur-
er,
– Guiding along templates manufact ured of hard ma terial,
e.g. steel,
– Dropping on or sliding over the floor,
– Using as a hammer,
–A p p l y i n g a n y k i n d o f f o r c e .
Ma ke s u r e t o ch e c k w h a t e v er i s b e l o w o r be h i n d y o u r w or k -
piece. Do not shoot nails into walls, ceilings or floors, when
persons are behind them. The nails can burst thr ough the
workpiece and injure someo ne.
Do not shoot a nail onto an already d riven-in one. This
could cause the nail to deform, the nails co uld become
jammed or the pneumatic tool could move uncontrolle d.
When the pneum atic tool is u sed under cold ambi ent con-
ditions, the first nails will be driven in slower than usual.
Once the pneumatic tool has warmed up durin g working,
normal operating speed will be regained.
Avoid blank shots in order to reduc e the wear of the impact
striker.
For longer w ork breaks or afte r finishing work , disconnect
the pneumatic tool from the air supply and empty the mag-
azine.
Emptying the Magazine
– Pull back the magazine slider 7 until it enga ges at th e
rear.
– Remove the nail strips 14.
Discard nail strips with less than 5 nails.
– Completely pull back the magazine slider 7 once more
to free the lock.
– Carefully guide the magazine slider to the front until it
touches the beginning of the magazine.
Note: Do not let the magazine slider snap back without
guiding it. Otherwise, the magazine slider could become
damaged, and there is danger of your fingers being caught
or pinched.
Adjusting the Depth Stop (see figure E)
The driving depth of the nails can be set with thumbwheel
3.
– Empty the magazine 8.
(See “Emptying t he Magazine”, page 14)
– Nails are driven in too deeply:
To reduce the driving d epth, turn thumbwheel 3 in
clockwise direction.
or
Nails are not driven in deep enough:
To increase the driving depth, turn thumbwheel 3 in an-
ticlockwise direction.
Henk Becker
Executive Vice President
Engineering
Helmut Heinzelmann
Head of Product Certification
PT/ETM9
OBJ_BUCH-1037-005.book Page 14 Monday, November 10, 2014 12:55 PM