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CORDLESS
3 GEAR
HAMMER DRILL
3G12V, 3G144V, 3G18V, 3G18VM, 3G24V, 3G24VM
INSTRUCTION MANUAL
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Contents
Warranty Power Tools
Whilst every effort is made to ensure your complete
satisfaction with this tool, occasionally, due to the mass
manufacturing techniques, a tool may not live up to our
required level of performance and you may need the
assistance of our service department.
This product is warranted for a 2-year period for home
domestic use from the date of the original purchase.
If found to be defective in materials or workmanship,
the tool or the offending faulty component will be repaired
or replaced free of charge with another of the same item.
A
small freight charge may apply. Proof of purchase is
essential. We reserve the right to reject any claim where
the purchase cannot be verified.
This warranty does not include damage or defects to the
tool caused by or resulting from abuse, accidents,
alterations or commercial or business use. It also does not
cover any bonus items or included accessories. Only the
powertool is covered under this warranty.
With continuing product development, changes may have
occurred which render the product received slightly
different to that shown in this instruction manual.
Please ensure that you store your receipt in a safe place.
Conditions apply to the above warranty. For full details of
the warranty terms and conditions please refer to our
website – www.gmcompany.com
For prompt service we suggest you log your service
request online - www.gmcservice.com.au, should you
not have access to the internet, please contact our
service department on 1300 880 001 (Australia)
or 0800 445 721 (New Zealand).
Warranty 2
Introduction 3
Environmental protection 3
Description of symbols 3
Specifications 4
General safety rules 5
Additional safety instructions for drills 6
Additional safety instructions for charger 7
Additional safety instructions for battery pack 8
Unpacking 8
Know your product 9
Adjustable side handle 10
Inserting and removing bits 10
Fitting and removing the battery pack 10
Battery charging 11
To obtain the best life for the battery 11
Battery indicator 11
LED Work area light 12
Trigger switch 12
Forward/Reverse control 12
Variable speed 12
Drilling positions 12
Torque adjustment/hammer selection collar 13
3 Speed gearbox 13
Screw driver bit storage 13
Chuck replacement 13
Drilling metals 14
Drilling plastics and plastic coated chipboard 14
Drilling masonry 14
Drilling wood 14
All drilling operations 14
Care 15
Maintenance 15
Power cord maintenance 15
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Introduction
Your new GMC power tool will more than satisfy
your expectations. It has been manufactured under
stringent GMC Quality Standards to meet superior
performance criteria.
You will find your new tool easy and safe to operate,
and, with proper care, it will give you many years
of dependable service.
CAUTION. Carefully read through this entire Instruction
Manual before using your new GMC Power Tool. Take
special care to heed the Cautions and Warnings.
Your GMC power tool has many features that will make
your job faster and easier. Safety, performance, and
dependability have been given top priority in the
development of this tool, making it easy to maintain
and operate.
Environmental protection
Recycle unwanted materials instead
of disposing of them as waste. All tools,
hoses and packaging should be sorted,
taken to the local recycling centre and
disposed of in an environmentally safe way
.
Description of symbols
The rating plate on your tool may show symbols.
These represent important information about the
product or instructions on its use.
Wear hearing protection.
Wear eye protection.
Wear breathing protection.
Double insulated for additional protection.
Conforms to relevant standards
for electromagnetic compatibility.
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Specifications
3G12V 3G144V 3G18V/3G18VM 3G24V/3G24VM
Charger
Charging time
Batteries
Nominal battery
voltage
Gear
Switch
Torque settings
Drill chuck
capacity
Weight
Maximum torque
Maximum drill no-load speed
Low
Medium
High
Hammer impact frequency
Low
Medium
High
Maximum drilling capacity
Steel
Wood
Concrete
230 – 240 Vac, 50Hz
45W 14Vdc, 2A
1 Hour 1 Hour 1 Hour 1 Hour
2 x 1.5Ah 2 x 1.5Ah 2 x 1.7Ah 2 x 1.7Ah
12V 14.4V 18V 24V
Three speed Three speed Three speed Three speed
Variable speed Variable speed Variable speed Variable speed
20 positions 20 positions 20 positions 20 positions
10mm Keyless 10mm Keyless 13mm Keyless 13mm Keyless
2.4kg 2.5kg 2.9kg 3.2kg
17.65 Nm 20.6 Nm 36.3 Nm 45.15 Nm
0 – 330min
0 – 570min
0 – 1300min
0 – 4950 BPM 0 – 5775 BPM 0 – 5775 BPM 0 – 6000 BPM
0 – 8550 BPM 0 – 10050 BPM 0 – 10050 BPM 0 – 10500 BPM
0 – 19500 BPM 0 – 22500 BPM 0 – 22500 BPM 0 – 24000 BPM
10mm 10mm 13mm 13mm
25mm 28mm 38mm 38mm
10mm 10mm 13mm 13mm
230 – 240 Vac, 50Hz
50W 17Vdc, 2A
-1
-1
-1
0 – 385min
0 – 670min
0 – 1500min
-1
-1
-1
230 – 240 Vac, 50Hz
65W 21Vdc, 2.1A
0 – 385min
0 – 670min
0 – 1500min
-1
-1
-1
230 – 240 Vac, 50Hz
85W 28Vdc, 2.3A
0 – 400min
0 – 700min
0 – 1600min
-1
-1
-1
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General safety rules
WARNING. Read all instructions. Failure to follow all
instructions listed below may result in electric shock,
fire and/or serious injury. The term “power tool” in all of
the warnings listed below refers to your mains operated
(corded) power tool or battery operated (cordless)
power tool.
Save these instructions
1. Work area
a. Keep work area clean and well lit.
areas invite accidents.
b. Do not operate power tools in explosive
atmospheres, such as in the presence of flammable
liquids, gases or dust. Power tools create sparks which
may ignite the dust or fumes.
c. Keep children and bystanders away while operating
a power tool.
2. Electrical safety
a. Power tool plugs must match the outlet. Never modify
the plug in any way.
earthed (grounded) power tools. Unmodified plugs and
matching outlets will reduce risk of electric shock.
b. Avoid body contact with earthed or grounded
surfaces such as pipes, radiators, ranges and
refrigerators. There is an increased risk of electric shock
if your body is earthed or grounded.
c. Do not expose power tools to rain or wet
conditions. Water entering a power tool will increase the
risk of electric shock.
d. Do not abuse the cord. Never use the cord for
carrying, pulling or unplugging the power tool.
Keep cord away from heat, oil, sharp edges or moving
parts. Damaged or entangled cords increase the risk of
electric shock.
e. When operating a power tool outdoors, use an
extension cord suitable for outdoor use.
suitable for outdoor use reduces the risk of electric shock.
Distractions can cause you to lose control.
Do not use any adapter plugs with
Cluttered and dark
Use of a cord
3. Personal safety
a. Stay alert, watch what you are doing and use
common sense when operating a power tool.
not use a power tool while you are tired or under the
influence of drugs, alcohol or medication. A moment of
inattention while operating power tools may result in
serious personal injury.
b. Use safety equipment. Always wear eye protection.
Safety equipment such as dust mask, non-skid
safety shoes, hard hat, or hearing protection used for
appropriate conditions will reduce personal injuries.
c. Avoid accidental starting. Ensure the switch is in the
off position before plugging in. Carrying power tools with
your finger on the switch or plugging in power tools that
have the switch on invites accidents.
d. Remove any adjusting key or wrench before
turning the power tool on.
attached to a rotating part of the power tool may result in
personal injury.
e. Do not overreach. Keep proper footing and balance at
all times. This enables better control of the power tool in
unexpected situations.
f. Dress properly. Do not wear loose clothing or
jewellery.
moving parts. Loose clothes, jewellery or long hair can be
caught in moving parts.
g. If devices are provided for the connection of dust
extraction and collection facilities, ensure these are
connected and properly used.
can reduce dust related hazards.
4. Power tool use and care
a. Do not force the power tool.
for your application. The correct power tool will do the job
better and safer at the rate for which it was designed.
b. Do not use the power tool if the switch does not turn
it on and off.
with the switch is dangerous and must be repaired.
Keep your hair, clothing and gloves away from
Any power tool that cannot be controlled
A wrench or a key left
Use of these devices
Use the correct power tool
Do
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c. Disconnect the plug from the power source before
making any adjustments, changing accessories, or
storing power tools.
reduce the risk of starting the power tool accidentally.
d. Store idle power tools out of the reach of children
and do not allow persons unfamiliar with the power
tool or these instructions to operate the power tool.
Power tools are dangerous in the hands of untrained users.
e. Maintain power tools. Check for misalignment or
binding of moving parts, breakage of parts and
any other condition that may affect the power tools
operation. If damaged, have the power tool repaired
before use. Many accidents are caused by poorly
maintained power tools.
f. Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges are less
likely to bind and are easier to control.
g. Use the power tool, accessories and tool bits etc.,
in accordance with these instructions and in the
manner intended for the particular type of power
tool, taking into account the working conditions and
the work to be performed.
operations different from those intended could result in a
hazardous situation.
5. Battery tool use and care
a. Ensure the switch is in the off position before
inserting battery pack.
power tools that have the switch on invites accidents.
b. Recharge only with the charger specified by the
manufacturer.
of battery pack may create a risk of fire when used with
another battery pack.
c. Use power tools only with specifically designated
battery packs.
create a risk of injury and fire.
d. When battery pack is not in use, keep it away from
other metal objects like paper clips, coins, keys,
nails, screws, or other small metal objects that can
Such preventive safety measures
Use of the power tool for
Inserting the battery pack into
A charger that is suitable for one type
Use of any other battery packs may
make a connection from one terminal to another
Shorting the battery terminals together may cause burns
or a fire.
e. Under abusive conditions, liquid may be ejected
from the battery; avoid contact.
occurs, flush with water. If liquid contacts eyes,
additionally seek medical help. Liquid ejected from the
battery may cause irritation or burns.
6. Service
a. Have your power tool serviced by a qualified repair
person using only identical replacement parts.
will ensure that the safety of the power tool is maintained.
If contact accidentally
Additional safety instructions for drills
Wear ear protectors with impact drills.
Exposure to noise can cause hearing loss.
Use auxiliary handles supplied with the tool.
Loss of control can cause personal injury.
• If possible, always use clamps or a vice to hold your work.
• Always switch off before you put the drill down.
• Ensure that the lighting is adequate.
• Do not put pressure on the drill, such that it slows the
motor down. Allow the drill bit to cut without pressure.
You will get better results and you will be taking better
care of your tool.
• Keep the area free of tripping hazards.
• Do not let anyone under 18 years operate this tool.
• Only use accessory bits in good condition.
• Before drilling, check that there is sufficient clearance for
the drill bit under the workpiece.
• Do not touch the bit after operation. It will be very hot.
• Keep your hands away from under the workpiece.
• Never use your hands to remove sawdust, chips or waste
close by the bit.
• Rags, cloths, cord, string and the like should never be left
around the work area.
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.
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• Support the work properly.
• If you are interrupted when operating the drill, complete
the process and switch off before looking up.
• Periodically check that all nuts, bolts and other fixings are
properly tightened.
• When using the drill, use safety equipment including
safety glasses or shield, ear defenders, and protective
clothing including safety gloves. Wear a dust mask if the
drilling operation creates dust.
If in doubt, do not plug in the tool. Using a power source
with a voltage less than the nameplate rating is harmful to
the motor.
The tool must be used only for its prescribed purpose.
Any use other than those mentioned in this Manual will
be considered a case of misuse. The user and not the
manufacturer shall be liable for any damage or injury
resulting from such cases of misuse.
To use this tool properly, you must observe the safety
regulations, the assembly instructions and the operating
instructions to be found in this Manual. All persons who use
and service the machine have to be acquainted with this
Manual and must be informed about its potential hazards.
Children and frail people must not use this tool. Children
should be supervised at all times if they are in the area in
which the tool is being used. It is also imperative that you
observe the accident prevention regulations in force in your
area. The same applies for general rules of occupational
health and safety.
The manufacturer shall not be liable for any changes
made to the tool nor for any damage resulting from
such changes.
Even when the tool is used as prescribed it is not
possible to eliminate all residual risk factors. The following
hazards may arise in connection with the tool’s construction
and design:
• Damage to the lungs if an effective dust mask is not worn.
• Damage to hearing if effective ear defenders are not worn
Additional safety instructions for the charger
• Before using the charger, read all the instructions and
cautionary markings on the charger and battery pack as
well as the instructions on using the battery pack.
• Only charge your batteries indoors as the charger is
designed for indoor use only.
• DANGER. If the battery pack is cracked or damaged in
any other way, do not insert it in the charger. There is a
danger of electric shock or electrocution.
• WARNING. Do not allow any liquid to come into contact
with the charger. There is a danger of electric shock.
• To allow the battery pack to cool down after charging, do
not place it in a hot environment such as a metal shed or
open trailer left in the sun.
• The charger is not intended for any use other than
charging the exact type of rechargeable battery pack as
supplied with the charger. Any other use may result in the
risk of fire, electric shock or electrocution.
• The charger and battery packs supplied with it are
specifically designed to work together. Do not attempt to
charge the battery pack with any other charger than the
one supplied.
• Do not place any object on top of the charger as it could
cause overheating. Do not place the charger near any
heat source.
• Do not pull on the lead of the charger to disconnect it
from the power source.
• Make sure that the charger cable is positioned where
it will not be stepped on, tripped over or otherwise
subjected to damage or stress.
• Do not use an extension cord unless it is absolutely
necessary. The use of an improper extension cord could
cause the risk of fire, electric shock or electrocution.
• Do not use the charger if it has been subjected to a
heavy knock, dropped or otherwise damaged in any way.
Take the charger to an authorised service centre for a
check or repair.
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• Do not disassemble the charger. Take it to an authorised
service centre when service or repair is required.
Incorrect re-assembly may result in the risk of fire, electric
shock or electrocution.
• To reduce the risk of an electric shock, unplug the
charger from the power supply before attempting to clean
it. Removing the battery alone does not reduce the risk.
• Never attempt to connect two chargers together.
• Do not store or use the tool and battery pack in
locations where the temperature may reach or exceed
104°F (40°C) such as alongside sheds or metal
structures in the summer.
• The charger is designed for use from a standard house-
hold electrical supply (230–240 volts). Do not attempt to
connect the charger to a supply with a different supply.
• If you wish to charge a second battery pack, unplug the
charger from the mains supply and leave it for at least
15 minutes. After this time you can charge a second
battery pack.
Additional safety instructions
for the battery pack
• The battery pack for this tool has been shipped in a low
charge condition. You should charge the battery pack
fully before use.
• To ensure the longest battery life and best battery
performance, always charge the battery when the air
temperature is between 18–24°C. Do not charge the
battery pack when the temperature is below 0°C, or above
40°C. This is important. Failure to observe this safety rule
could cause serious damage to the battery pack.
• Do not incinerate the battery pack even if it is seriously
damaged or can no longer hold a charge. The battery
pack can explode in a fire.
• Never attempt to open the battery pack for any reason.
If the plastic housing of the battery pack breaks open
or cracks, immediately discontinue its use and do not
recharge it.
• The battery pack utilizes nickel-cadmium cells.
Cadmium is considered to be a toxic material. Use an
environmentally safe disposal unit at a municipal
waste disposal centre to dispose of a damaged or worn
out battery.
Unpacking
Due to modern mass production techniques, it is unlikely
that your GMC Power Tool is faulty or that a part is missing.
If you find anything wrong, do not operate the tool until the
parts have been replaced or the fault has been rectified.
Failure to do so could result in serious personal injury.
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Know your product
This drill can be used for drilling in wood, metal, masonry
and screwdriving. Use the tool and accessories only for
intended applications. All other applications are expressly
ruled out.
1. Single sleeve keyless chuck
2. Torque adjustment/
hammer selection collar
3. Trigger with variable
speed control
4. Forward/reverse control
(not shown)
5. Adjustable side handle
6. Battery pack release buttons
7. Rechargeable battery pack
8. Charger
9. 3 Speed gear selector
10. Screw Driver bit storage
11. Spirit level
12. Battery indicator button
13. LED Light switch
14. LED lights (x5)
1
8
2 9 11
4
5
3
13
14
12
7
10
6
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Adjustable side handle
The drill is supplied with a 360º adjustable side handle (5).
Always fit and use the side handle when using the drill, this
increases safety when operating the drill.
To adjust the side handle, rotate the side handle in an anti
clockwise direction approximately 2 full turns. Once the side
handle is loose rotate the collar left or right to the desired
position. You do not need to fully remove the handle.
If you want to remove the side handle, slide the collar
completely forward over the chuck.
To tighten the collar on the housing, rotate the handle in a
clockwise direction firmly.
Ensure the collar is fully located on the aluminium housing.
Inserting and removing bits
The drill is fitted with auto spindle lock which means if
you try and rotate the chuck by hand the spindle of the
drill will automatically lock. This means you only need to
grasp the chuck and rotate the chuck housing to remove
or fit accessories.
This drill has a keyless chuck, hence a chuck key is not
needed to secure a bit in the drill. Always set the forward/
reverse control (4) to the locked ‘OFF’ position when
installing and removing bits. It is also recommended to
remove the battery pack to avoid unintentional starting.
1. Open the chuck jaws by firmly holding the chuck housing
and rotating the housing in an anti clockwise direction.
Open the jaws sufficiently so as to fit the desired
accessory.
2. Ensure the accessory is fully inserted.
3. To firmly clamp the accessory in the chuck, grasp
the chuck housing and rotate the chuck housing in a
clockwise direction. Ensure the bit is retained firmly or
damage to the chuck jaws can result.
4. To remove the accessory, open the chuck jaws by firmly
holding the chuck housing and rotating the housing in an
anti clockwise direction. Open the jaws sufficiently so as
to remove the specific accessory.
Fitting and removing the battery pack
To remove the battery pack from the drill firmly press the
battery release buttons (6) at either side of the battery pack,
and slide the battery backward out of the tool.
To install the battery pack, align
rails, on the tool with the tabs
on the battery pack and slide
the battery pack on to the drill.
Ensure the battery pack is sitting
straight on the foot and correctly
entering the runners. The battery
should slide fully on to the drill
foot until the battery pack “clicks”
into position.
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Battery charging
c
b
To remove the battery pack from the charger depress
the battery pack release buttons (6).
Depending on room temperature, line voltage, and existing
charge level, initial battery charging may take longer than
one hour.
Disconnect charger from power source when not in use.
a
e
Make sure power circuit voltage is the same as that
shown on the charger specification plate. Connect
charger to power source. The yellow light (a), should light
up. This indicates the charger is ready to begin charging.
Position battery pack on charger; align rails (d), on battery
charger with (e) on battery pack. Slide battery forward onto
charger until it clicks into position.
The red light (b), should begin to glow continuously,
indicating that the battery pack is receiving a “Fast Charge”.
Note. If the red light does not glow continuously, but the
yellow light is flashing and the green light (c), begins
to glow, remove battery and re-insert when battery
temperature is between 0°C and 40°C.
After approximately one hour, the “Fast Charge” indicator
red light (b) should go out indicating that the battery pack is
fully charged and that the charger is now in a “Maintenance
Charge” mode, this is confirmed by the green light (c)
coming on. The battery pack can be left on “Maintenance
Charge” until you are ready to use it.
d
To obtain the best life for the battery
Never allow the drill to come to a complete stand still
before recharging. The battery should be placed on charge
whenever the battery is noticeably running down or the drill
no longer performs a task it previously performed.
Avoid conducting short charges. Make sure that the
battery is fully charged every time by allowing the charger
to complete its full charging cycle.
Avoid allowing lose items like screws or nails etc to be
stored with battery packs as these or similar items can
short battery packs and cause a fire or explosion.
Always unplug the charger when not in use and store in
a dry secure place.
Avoid charging or storing your battery in temperatures
below 0ºC and above 40ºC.
Battery indicator
Press the battery indicator button (12), this will display the
level of charge remaining in the
battery. The LED’s lighting up
indicate the charge remaining
in the battery, the higher the
number of LED’s the more
charge remaining in the battery.
When the battery indicator
is showing only one LED the
battery should be removed and
put on the charger.
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LED Work area light
The drill has five LED lights (14) to illuminate the work
area and improve vision when drilling in areas with
insufficient light.
To turn the LED lights on depress the LED light switch (13).
To turn the LED lights off repress the LED light switch (13).
Trigger Switch
To start the drill, depress
the trigger switch.
Use the forward/reverse
control (4) to select the
direction of rotation, then
squeeze the trigger switch
(3). This trigger switch
is an electronic variable
speed control which enables the user to vary the speed
continuously. The speed varies according to how far the
trigger switch is depressed, the further it is depressed the
faster the chuck will rotate and the lighter it is depressed,
the slower it will rotate. The switch is equipped with a
brake, the chuck will stop as soon as the trigger switch is
fully released.
To stop the drill, release the trigger switch.
Forward/Reverse control
The forward/reverse control
(4) allows you to change the
direction of the tool while the
variable speed trigger is not
depressed.
To select forward rotation
depress the control (4) toward
the left side of the tool. To
select reverse depress the
control (4) to the right side of
the tool.
Drilling uses the forward mode.
The reverse mode is intended for the removal of screws.
The centre position of the control button locks the tool in the
off position.
Variable speed
The variable speed feature is particularly useful when
driving screws.
It also enables you to select the best speed for a particular
application. The farther you squeeze the trigger, the faster
the tool will operate.
Use lower speeds for starting holes without a centre
punch, drilling metals or plastic, driving screws and drilling
ceramics, or in any application requiring high torque. Higher
speeds are better drilling in wood, wood compositions and
for using abrasive and polishing accessories. For maximum
tool life, use variable speed only for starting holes or
fasteners.
Note. It is best to use the variable speed feature for a short
time only. Do not continuously operate the drill in variable
speed mode this may damage the switch.
Drilling Positions
This symbol indicates the DRILL POSITION. Use this
mode for high speed drilling (Wood, Aluminium, and
Steel) and the clutch will be locked.
This symbol indicates the HAMMER POSITION. Use
this mode to select hammer action. For best results
in hammer mode, use set the gear selector (9) to
Position 3 (high speed).
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Torque adjustment/hammer selection collar
By rotating the torque adjustment/hammer selection collar
(2) behind the chuck, it is possible to adjust the torque to
each of twenty settings, or select hammer action or the
drill setting.
The range of twenty torque settings allows better control
when using the drill as a screwdriver as it prevents overtightening of the screws.
The numbers circling the collar are used to indicate the
level of torque. The higher number on the collar, the
higher torque and the larger the fastener which can be
driven. To select any of the numbers, rotate the collar
(2) until the desired number aligns with the arrow head
indicator on the housing.
3 Speed gearbox
The 3 Speed Gearbox allows
you to select a gear with the
optimum speed and torque to
suit the application.
To select the first gear (low
speed, high torque setting), turn
the tool off and wait until it stops.
Push the gear selector (9) back,
away from the chuck, so the number 1 is displayed.
To select the second gear (medium speed, medium torque
setting), turn the tool off and wait till it stops. Slide the
gear selector forward towards the chuck, so the number 2
is displayed.
To select the third gear (high speed, low torque setting),
turn the tool off and wait until it stops. Slide the gear
selector (9) to the middle position, so the number 3
is displayed.
Note. Do not change gears when the tool is running.
Screw driver bit storage
A convenient storage area (10) with retaining clip, for
screwdriver bits is provided on the left side of the tool.
Chuck replacement
Chuck removal
Always wear eye protection.
Turn the torque adjustment collar (2) to the “drill” position
and first gear, on the gear shift (9). Tighten the chuck
around the shorter end of a hex key (not supplied) of 5mm
or greater size. Using a wooden mallet or similar object,
strike the longer end in the clockwise direction. This will
loosen the screw inside the chuck.
1. Open chuck jaws fully.
2. Insert a 5mm hex key into front of chuck between jaws to
engage screw head. Remove screw by turning clockwise.
3. Place the hex key in chuck and
tighten. Using a wooden mallet or
similar object, strike key sharply
in the anti-clockwise direction.
This will loosen the chuck so that
it can be unscrewed by hand.
Chuck installation
1. Screw the chuck on
by hand as far as
it will go and insert
screw (LH thread).
2. Tighten the chuck
around the shorter
end of hex key (not
supplied) strike the
longer end in the
clockwise direction with
a wooden mallet.
3. Remove the hex key and open the jaws fully. Tighten the
screw in the centre of the chuck firmly, with the hex key in
an anti-clockwise direction.
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Drilling metals
• For maximum performance, use high speed steel bits for
metal or steel drilling.
• Ensure that the torque adjustment / hammer selection
collar (2) is in normal drilling mode.
• Begin drilling at a very low speed to prevent the bit from
slipping off the starting point.
• Always clamp sheet metal.
• Support thin metal with a block of wood to avoid
distorting it.
• Use a punch to mark the centre of the hole.
• Use a suitable lubricant for the material you are
working on.
Use: for:
Oil Steel
Turpentine or paraffin Aluminium
Do not lubricate Brass, copper or cast iron
Drilling plastics and plastic coated chipboard
• Use high speed drill bits
• See drilling wood below
Drilling masonry
• For maximum performance use carbide-tipped masonry
impact bits when drilling holes in brick, tile, concrete etc.
• Turn the mode selector to hammer mode, then rotate the
torque collar to the drill position.
• Apply light pressure and medium speed for best results
in brick.
• Apply additional pressure and high speed for hard
materials such as concrete.
• When drilling holes in tile, practice on a scrap piece to
determine the best speed and pressure.
Drilling wood
• For maximum performance, use high speed steel bits for
wood drilling.
• Ensure that the mode selector is in normal drilling mode.
• Begin drilling at a very low speed to prevent the bit from
slipping off the starting point. Increase the speed as the
drill bites into the material.
• When drilling through holes, place a block of wood behind
the work piece to prevent ragged or splintered edges on
the back side of the hole.
• WARNING. Never attempt to lock the trigger switch in the
on position, do not lock the trigger on jobs where your
hammer drill may need to be stopped suddenly.
All drilling operations
• Mark off the centre of the hole using a centre punch
or nail.
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Care
• Don’t force the drill, let it work at its own pace
• Keep the drill bit sharp.
• Reduce pressure, as the drill is about to break through
the item being drilled.
Maintenance
• Store the tools, instruction manual and where necessary
the accessories in the original packaging. In this way
you will always have all the information and parts ready
to hand.
• Do not throw used batteries into fire or water. There
is a danger of explosion! Please hand in non-working
or used batteries, or tools with built-in batteries, to the
environmentally-safe disposal unit at a municipal wastedisposal centre, or to your dealer.
Power cord maintenance
If the supply cord needs replacing, the task must be carried
out by the manufacturer, the manufacturer’s agent, or an
authorised service centre in order to avoid a safety hazard.
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GMC customer assist
If your product needs repairing, replacing,
technical service or you simply need help or advice,
please contact us on our Customer Assist Line
1300 880 001 (Australia) or 0800 445 721 (New Zealand).
For prompt service we suggest you log your service request
online at www.gmcservice.com.au. Should you not have
access to the Internet, please contact our service department
on 1300 880 001 (Australia) or 0800 445 721 (New Zealand).
7am –7pm, 7days a week (AEST).
Please note that if repair or replacement is required,
you must provide a valid original purchase receipt.
You will need the following details at hand to log your service request;
Personal details: First & Last name, address, pick up address,
contact phone numbers, email address
Product details: Product number, date of purchase, retailer bought from,
State & postcode, receipt number, reason for the request,
copy of official purchase receipt
Attach your purchase receipt and save with this Manual for future reference
Please refer to our website www.gmcompany.com for full GMC warranty Terms and Conditions.
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