Bosch GCO 14-2 User manual

Operating instructions
Instructions d’emploi
Instrucciones de
servicio
Manual de instruções
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GCO 14-2

1 609 929 E38 • (05.02) PS
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1 609 929 E38 • (05.02) PS
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518 192021
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English–1
1 609 929 E38 • (05.02) PS
1 GENERAL SAFETY RULES
FOR ELECTRIC TOOLS
Read and understand all in
structions. Failure to follow all in
structions liste below, may result
in electric shock, fire an /or serious personal injury.
S VE THESE INSTRUCTIONS.
Work Area
Keep your work area clean and well lit. Cluttere
benches an ark areas invite acci ents.
Do not operate power tools in explosive atmo
spheres, such as in the presence of flammable
liquids, gases, or dust. Power tools create sparks
which may ignite the ust or fumes.
Keep bystanders, children, and visitors away
while operating a power tool. Distractions can
cause you to lose control.
Electrical Safety
Grounded tools must be plugged into an outlet
properly installed and grounded in accordance
with all codes and ordinances. Never remove the
grounding prong or modify the plug in any way.
Do not use any adaptor plugs. Check with a
qualified electrician if you are in doubt as to
whether the outlet is properly grounded. If the
tools shoul electrically malfunction or break own,
groun ing provi es a low resistance path to carry
electricity away from the user.
void body contact with grounded surfaces such
as pipes, radiators, ranges and refrigerators.
There is an increase risk of electric shock if your bo y
is groun e .
Don't expose power tools to rain or wet condi
tions. Water entering a power tool will increase the
risk of electric shock.
Do not abuse the cord. Never use the cord to car
ry the tools or pull the plug from an outlet. Keep
cord away from heat, oil, sharp edges or moving
parts. Replace damaged cords immediately.
Damage cor s increase the risk of electric shock.
Personal Safety
Stay alert, watch what you are doing, and use
common sense when operating a power tool. Do
not use tool while tired or under the influence of
drugs, alcohol, or medication. A moment of inat
tention while operating power tools may result in seri
ous personal injury.
Dress properly. Do not wear loose clothing or
jewelry. Contain long hair. Keep your hair, cloth
ing, and gloves away from moving parts. Loose
clothes, jewelry, or long hair can be caught in moving
parts.
void accidental starting. Be sure switch is off
before inserting plugging in. Carrying tools with
your finger on the switch or plugging in tools that have
the switch on invites acci ents.
Remove adjusting keys or wrenches before turn
ing the tool on. A wrench or a key that is left attache
to a rotating part of the tool may result in personal in
jury.
Do not overreach. Keep proper footing and bal
ance at all times. Proper footing an balance en
ables better control of the tool in unexpecte situa
tions.
Use safety equipment. lways wear eye protec
tion. Dust mask, nonski safety shoes, har hat, or
hearing protection must be use for appropriate con
itions.
Power Tool Handling and Usage
Use clamps or other practical way to secure and
support the workpiece to a stable platform. Hol 
ing the work by han or against your bo y is unstable
an may lea to loss of control.
Do not force tool. Use the correct tool for your
application. The correct tool will o the job better an
safer at the rate for which it is esigne .
Do not use tool if switch does not turn it on or off.
A tool that cannot be controlle with the switch is an
gerous an must be repaire .
Disconnect the plug from the power source be
fore making any adjustments, changing acces
sories, or storing the tool. Such preventive safety
measures re uce the risk of starting the tool acci en
tally.
Store idle tools out of reach of children and other
untrained persons. Tools are angerous in the
han s of untraine users.
Maintain tools with care. Keep cutting tools
sharp and clean. Properly maintaine tools with
sharp cutting e ge are less likely to bin an are easier
to control.
Check for misalignment or binding of moving
parts, breakage of parts, and any other condition
that may affect the tool’s operation. If damaged,
have the tool serviced before using. Many acci
ents are cause by poorly maintaine tools.
Use only accessories that are recommended by
the manufacturer for your model. Accessories that
may be suitable for one tool, may become hazar ous
when use on another tool.
WARNING

English–2
1 609 929 E38 • (05.02) PS
Service
Tool service must be performed only by qualified
repair personnel. Service or maintenance performe
by unqualifie personnel coul result in a risk of injury.
When servicing a tool, use only identical replace
ment parts. Follow instructions in the Mainte
nance section of this manual. Use of unauthorize
parts or failure to follow Maintenance Instructions may
create a risk of shock or injury.
2 SPECIFIC SAFETY RULES
FOR CUT-OFF AND MITER SAWS
If the power cable is amage or cut through while
working, o not touch the cable but pull the power
plug imme iately. Never use the machine with a am
age cable.
Wear protective glasses an hearing protection. Dust
is generate while working that can be etrimental to
health, inflammable or explosive. Suitable protective
measure are require .
For example: Some types of ust are consi ere to be
carcinogenic. Use suitable ust vacuuming an wear
a ust protection mask.
Light metal ust can burn or explo e. Always keep the
workplace clean since mixe materials are especially
angerous.
Wear protective gloves an stur y shoes. When nec
essary, also wear an apron.
Connect machines that are use out oors by means
of a fault current circuit breaker (FI) with a maximum
triggering current of 30 mA. Use only an extension ca
ble that is approve for out oor use.
Always lea the cable to the rear away from the ma
chine.
Use the machine only for ry cutting.
Take hol of the electric tool only by the insulate han
le when the cutting tool use coul come in contact
with hi en wiring or its own power cable. Contact
with voltage carrying wiring can place the metal parts
of the machine also un er voltage an lea to an elec
trical shock.
Never stan on machine. Serious injury coul occur if
the tool is tippe or if the cutting tool is acci entally
contacte .
Use cutting isks whose allowable spee is at least as
high as the noloa spee of the machine. Check the
cutting isk before use.
Keep your bo y positione to either si e of but not in
line with the cutting isk. In case of a burst isk, your
bo y is better protecte from possible fragments.
The cutting isk must be flawlessly mounte an be
able to rotate freely. Make a test run of at least one
minute without loa . Do not use amage , outof
roun or vibrating cutting isks.
Always correctly a just the epth stop. When the
epth stop is not properly a juste , the cutting isk
can cut into the surface un erneath the base plate.
During operation, the cutting isk cover must be at
tache an the protective pen ulum hoo must be
functioning properly.
Do not work with magnesium or materials containing
asbestos.
Protect the cutting isk from impacts, shocks an
grease.
Apply the machine to the work piece only when it is
switche on.
Keep your han s away from the rotating cutting isk.
When cutting metal, sparks are generate . Take care
that no persons are en angere . Because of the an
ger of fire, no combustible materials shoul be locate
in the vicinity (spark flying zone).
Blocking of the cutting isk lea s to a jerking reaction
of the machine. In this case, switch off the machine
imme iately.
Do not ram the cutting isk with force into the work
piece or apply too much pressure when using the ma
chine. Avoi especially the catching of the cutting isk
when working on corners, sharp e ges, etc. When the
cutting isk is amage ue to misuse, it may evelop
cracks that coul lea to bursting without warning.
Avoi overloa ing the motor especially when working
with large work pieces. When cutting, apply only light
pressure to the han le.
Observe the imensions of the cutting isk. The hole
iameter must fit on the tool spin le or the a apter
without play.
Do not apply si eways pressure to the cutting isk.
Observe the instructions of the manufacturer for the
mounting an usage of the cutting isk.
Caution! The cutting isk continuous to run after the
machine is switche off.
Actuate the spin le locking only when the cutting isk
is at a stan still.
The cutting isk becomes very hot while working; nev
er take hol of it before it has coole .
Bosch can ensure flawless functioning of the machine
only when original accessories inten e for the ma
chine are use .

English–3
1 609 929 E38 • (05.02) PS
SYMBOLS
Important notice: Some of the following symbols coul have meaning for the use of your tool. Please take note
of the symbols an their meaning. The correct interpretation of the symbols will help you to use the tool in a
better an safer manner.
Symbol Name Meaning
VVolts Voltage
A Amperes Current
Ah Amperehours Capacity, quantity of store electrical energy
Hz Hertz Frequency
WWatt Power
Nm Newtonmeter Unit of energy
kg Kilograms Mass, weight
mm Millimeter Length
min/s Minutes/Secon s Time
°C/°F Degrees Celsius/Degrees
Fahrenheit
Temperature
B Decibel Unit of relative lou ness
Ø Diameter Size of rill bits, grin ing wheels, etc..
min1/n0 Revolutions per minute/no loa
spee
Rotational spee at no loa
…/min Revolutions or reciprocation per
minute
Revolutions, strokes, surface spee , orbits, etc.
per minute
0 Off position Zero spee , zero torque...
Left rotation/Right rotation Direction of rive rotation
/■Hex socket rive/Square rive Type of tool hol er
Arrow Action in the irection of arrow
Alternating current Type or a characteristic of current
Direct current Type or a characteristic of current
Alternating or irect current Type or a characteristic of current
Class II construction Designates ouble insulate constructe tools
Protection class I
(Groun terminal)
Machines of the protection class I must be groun 
e
Warning symbol Alerts user to warning messages.
Rea an un erstan instructions before opera
tion.
Warning symbol Provi es information for correct han ling, e.g.,
rea the operating instructions

English–4
1 609 929 E38 • (05.02) PS
3 FUNCTION
Please open the fol out page with the
illustration of the machine an leave it
open while you rea these operating in
structions.
Intended Use
The machine is inten e for stationary use to perform
lengthways an crossways straight cuts or miter cuts
to 45° in metal materials without the use of water.
Noise/Vibration Information
Measure values are etermine accor ing to stan
ar EN 50 144 proce ures.
The Aweighte noise levels of the tool are typically:
Soun pressure level: 99 B(A);
Soun power level: 112 B(A).
Wear ear protection!
The weighte acceleration is typically 3,7 m/s2.
Product Specifications
Product Elements
The numbering of the pro uct elements refers to the il
lustration on the fol out page.
1Han le
2On/Off switch
3Pen ulum protective hoo
4Spin le lock
5Cutting isk*
6Angle stop
7Clamping spin le
8Quick release
9Spin le han le
10 Base plate
11 Wrench
12 Angle stop bolts
13 Transport safety
14 Locking nut for epth stop
15 Depth stop
16 Tool arm
17 Carrying han le
18 Tool spin le
19 Clamping flange
20 Washer
21 Hexhea bolt
22 Switch lock
* Optional accessories
Not all the accessories illustrated or described are in
cluded in standard delivery.
CutOff and Miter Saw GCO 142
Or er number 0 601 B11 0..
Rate input power [W] 2,300
No loa spee [min1]3,500
Tool spin le
Without a apter
With a apter
[mm]
20,0
25,4
Weight approx. [kg] 19,4
Cutting iskØ [Inch] 14
Protection class / I
For maximum work piece imensions,
see the Working Instructions Section

English–5
1 609 929 E38 • (05.02) PS
4 OPERATING INSTRUCTIONS
Before Use
To ensure safe han ling, the feet of the base plate 10
must be place on a suitable platform (e.g. work
bench, even floor, etc.).
Transport Safety
Before all work on the machine, pull the power
plug.
The transport safety 13 makes possible easy han ling
of the machine when transporting to the various work
ing locations.
Securing the Machine (Transport Position)
Swing the tool arm 16 with the han le 1 ownwar to
the stop. Press in the transport safety 13 an release
the han le.
Releasing the Machine (Working Position)
Press the tool arm 16 with the han le 1 of the machine
somewhat ownwar to relieve the loa on the trans
port safety. Pull the transport safety 13 outwar an
gui e the tool arm slowly upwar .
Take care while working that the transport safety is not
presse in, otherwise the tool arm cannot be swung
own to the esire epth.
Changing the Tool
(See the Illustration )
Before all work on the machine, pull the power
plug.
Use only cutting isks that correspon to the charac
teristic ata given in these operating instructions.
Use only cutting isks whose allowable spee is as
high as the noloa spee of the machine.
Actuate the spin le lock only with the cutting isk is at
a stan still.
Removing the Cutting Disk
Place the machine in the working position.
Swing the pen ulum protection hoo 3 upwar to the
stop.
Turn the hexhea bolt 21 with the wrench 11 (16 mm)
provi e while pressing the spin le lock 4 at the same
time until it engages.
Hol the spin le lock epresse an unscrew the hex
hea bolt 21. Remove the washer 20 an the clamp
ing flange 19.
Remove the cutting isk 5.
Installing the Cutting Disk
If necessary, clean all parts to be mounte .
Place the new cutting isk on the tool spin le 18 so
that the label points away from the tool arm 16.
Place on the clamping flange 19, the washer 20 an
the hexhea bolt 21. Press the spin le lock 4 until it
engages an tighten the hexhea bolt 21 with a
torque of approx. 13 Nm.
Gui e the pen ulum protection hoo back own.
Adjusting the Miter Angle
Before all work on the machine, pull the power
plug.
The miter angle can be set in the range from 0° to 45°.
Often use setting values are i entifie on the angle
stop 6 with appropriate marking. The 0° an 45° po
sitions are set at the en stops.
Loosen the two angle stop bolts 12 with the openen
wrench 11 (16 mm) provi e . Set the esire angle
an retighten the angle stop bolts.
Clamping the Work Piece
(See the Illustration )
Before all work on the machine, pull the power
plug.
To ensure optimum working safety, the work piece
must always be firmly clampe .
Place the work piece against the angle stop 6. Sli e
the clamping spin le 7 against the work piece an
clamp the work piece firmly with the ai of the spin le
9.
Releasing the Work Piece
Loosen the spin le han le 9.
Swing up the quick release 8 an pull the clamping
spin le 7 away from the work piece.
Putting into Operation
Switching On and Off (See the Illustration )
0 601 B11 0..
To switch on the machine, press the on/off switch 2
an hol it epresse .
To lock the on/off switch 2, sli e the switch lock 22 in
the irection of the tool arm.
To
switch off
the machine, release the on/off switch
2
.
For locke on/off switch, press the on/off switch com
pletely in until the switch lock releases an then re
lease the on/off switch 2.
B
C

English–6
1 609 929 E38 • (05.02) PS
0 601 B11 037 (Australia)
To switch on, sli e the switch lock 22 in the irection
of the tool arm. Then press the on/off switch 2 an
hol it epresse .
For safety reasons, the on/off switch of the ma
chine cannot be locked on but must remain de
pressed during operation.
To
switch off
the machine, release the on/off switch
2
.
Working Instructions
Maximum Work Piece Dimensions [mm]
Do not loa the machine so heavily that it comes to a
stan still.
A vancing too fast consi erably re uces the perfor
mance capabilities of the machine an shortens the
service life of the cutting isk.
The cutting isk becomes very hot while working; o
not take hol of it until it has coole .
Use only cutting isks that are suitable for the material
to be worke .
Depth stop
As elivere , the epth stop 15 is set so that a new
14" cutting isk oes not touch the base plate when
sawing. To compensate for the wear of the cutting
isk, the epth stop can be set eeper.
With the use of a new cutting isk, the epth stop
must then always be set back to the original position.
lways adjust the depth stop so that the
cutting disk does not touch the base plate
when sawing.
Adjusting the Depth Stop
Before all work on the machine, pull the power
plug.
Loosen the locking nut 14 with the openen wrench
11 (13 mm) provi e . Swing the tool arm 16 with the
han le 1 to the esire position.
Screw the epth stop 15 in the clockwise or counter
clockwise irection until the bolt hea rests on the
housing.
Gui e the tool arm 16 slowly upwar an tighten the
locking nut 14.
5 MAINTENANCE AND SERVICE
Maintenance
Shoul the machine fail in spite of careful manufactur
ing an testing proce ures, have the repairs per
forme by an authorize customer service location for
Bosch electrotools.
For inquiries an spare parts or ering, please inclu e
the 10 igit or er number on the nameplate of the ma
chine.
Always keep the machine an the ventilation slits clean
for efficient an safe working. When working with met
al un er extreme con itions, con uctive ust can be
eposite on the interior of the machine. In such cas
es, frequently blow out the machine through the venti
lation slits an connect by means of a fault current cir
cuit breaker (FI).
The pen ulum protective hoo must always be able to
move freely an close by itself. Therefore, always keep
the area aroun the pen ulum protective hoo clean.
Accessories
Cutting isk . . . . . . . . . . . . . . . . . . . . 2 610 995 082
Disposal
Tool, accessories an packaging shoul be sorte for
environmentfrien ly recycling.
The plastic components are labele for categorize re
cycling.
Miter Angle
Work Piece Form 0 ° 45 °
120 Ø 115 Ø
120 x 120 95 x 95
80 x 220 70 x 100
140 x 140 90 x 90

English–7
1 609 929 E38 • (05.02) PS
Service and Customer Advice
In case of a claim, repair or purchase of replacement
parts as well as in case of queries or other problems
please contact your local ealer or Bosch representa
tive.
People’s Republic of China
Shanghai
C. Melchers Lt .
13/Fl, East Ocean Centre
588 Yan ’an Roa (East)
Shanghai 200001
✆ . . . . . . . . . . . . . . . . . . . . . .+86 (0)21/ 635 28848
Fax . . . . . . . . . . . . . . . . . . . . .+86 (0)21/ 635 13138
Guangzhou
C. Melchers Lt .
Room 1108, T.P. Plaza
9/109 Liu Hua Roa
Guangzhou 510010
✆ . . . . . . . . . . . . . . . . . . . . . .+86 (0)20/ 866 68700
Fax . . . . . . . . . . . . . . . . . . . . .+86 (0)21/ 866 77845
Beijing
C. Melchers Lt .
Beijing Representatives
Room 503–504 Beijing Tower
No. 10 Chang ’an Avenue (East)
Beijing 100006
✆ . . . . . . . . . . . . . . . . . . . . . .+86 (0)10/ 6525 7775
Fax . . . . . . . . . . . . . . . . . . . . .+86 (0)10/ 6512 3505
Hongkong
C. Melchers Lt .
1210 Shun Tak Centre, WestTower
200 Connaught Roa , Central
Hongkong
✆ . . . . . . . . . . . . . . . . . . . . . . . . . +852 25/ 469069
Fax . . . . . . . . . . . . . . . . . . . . . . . . +852 25/ 487914
www.bosch.com.cn
Indonesia
P. T. Multi Tehaka
Karang Anyar Permai Block B24
Jl. Karang Anyar No. 55
Jakarta Pusat 10740
In onesia
✆ . . . . . . . . . . . . . . . . .+62 (0)21/ 659 5222 (5 lines)
Fax . . . . . . . . . . . . . . . . . . . +62 (0)21/ 659 5252  3
[email protected]
www.bosch.co.i
Phillippines
Robert Bosch, Inc.
Zuellig Buil ing
Sen. Gil Puyat Avenue
Makati City 1200, Metro Manila
Philippines
✆ . . . . . . . . . . . . . . . . . . . . . . . +63 (0)2/ 817 3231
www.bosch.com.ph
Malaysia
Robert Bosch (SEA.) Pte. Lt .
No. 8a, Jalan 13/6
Selangor Darul Ehsan
Petaling Jaya 46200, Malaysia
✆ . . . . . . . . . . . . . . . . . . . . . . .+60 (0)3/ 7958 3000
Fax (EW Dept.) . . . . . . . . . . . . . +60 (0)3/ 7958 3838
www.bosch.com.sg
Thailand
Robert Bosch Lt .
Liberty Square Buil ing
No. 287, 11 Floor
Silom Roa , Bangrak
Bangkok 10500
✆ . . . . . . . . . . . . +66 (0)2/ 631 18791888 (10 lines)
Fax . . . . . . . . . . . . . . . . . . . . . . .+66 (0)2/ 238 4783
Robert Bosch Lt ., P. O. Box 2054
Bangkok 10501, Thailan
Bosch Service – Training Centre
28692869/1 Soi Ban Kluay
Rama IV Roa (near ol Paknam Railway)
Prakanong District
10110 Bangkok, Thailan
✆ . . . . . . . . . . . . . . . . . . . . . . +66 (0)2 /671 78004
Fax . . . . . . . . . . . . . . . . . . . . . . .+66 (0)2/ 249 4296
Fax . . . . . . . . . . . . . . . . . . . . . . .+66 (0)2/ 249 5299
Singapore
Robert Bosch (SEA.) Pte. Lt .
38 C Jalan Pemimpin
Singapore 915701, Republic of Singapore
✆ . . . . . . . . . . . . . . . . . . . . . . . . . . . .+65 3505494
Fax . . . . . . . . . . . . . . . . . . . . . . . . . . .+65 3505327
www.bosch.com.sg
Vietnam
Ho Chi Minh City
Robert Bosch (SEA) Pte Lt
Resi ent Representative Office HCMC
Tacasin Business Centre, 2n Floor
243243B Hoang Van Thu P.1
Tan Binh District, Vietnam
✆ . . . . . . . . . . . . . . . . . . . . . . . . . +84 8/ 847 87 64
Fax . . . . . . . . . . . . . . . . . . . . . . . . +84 8/ 847 83 28
Australia
Robert Bosch Australia L.t. .
RBAU/SPT2
1555 Centre Roa
P.O. Box 66 Clayton
AUS3168 Clayton/Victoria
✆ . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 800 804 777
Fax . . . . . . . . . . . . . . . . . . . . . . . . . . 1 800 819 520
[email protected]
www.bosch.com.au
Specifications subject to change without notice.