INSTRUCTION MANUAL
1200W
184mm (7-1/4”)
Circular Saw
MX1275
• London • Melbourne • Perth • Shanghai • Taipei
050805 ED6 PW
• Verona • Hong Kong • New York • Auckland •
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Dear Customer
Description of symbols
If you require any help with your product, whether it is a
Warranty claim, spare part or user information:
The rating plate on your tool may show symbols. These
represent important information about the product or
instructions on its use.
Please phone our Help Line for an immediate response.
The appropriate number is given on the rear page of this
manual.
Wear hearing protection.
Wear eye protection.
Wear breathing protection.
Introduction
Double insulated
for additional protection.
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.
Conforms to relevant standards for
electromagnetic compatibility.
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 to the
development of this tool, making it easy to maintain and
operate.
Specifications
Voltage:
230–240V ~ 50 Hz
1200W
5000 RPM
Double insulated
Ø184mm
24 TCT
Input power:
No load speed:
Insulation:
Blade diameter:
Blade teeth:
Blade arbour:
Blade kerf:
16mm
2.4mm
Bevel angle range:
Depth of cut at 90°:
Depth of cut at 45°:
Weight:
Note. The manufacturer may fit a different blade.
Warnings.
0° to 45°
65mm
43mm
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.
4.6kg
1. Never use a blade thinner than 1.2mm or thicker
than 2.5mm
2. Do not use High Speed Steel (HSS) blades.
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Personal safety
General safety instructions
• Stay alert, watch what you are doing and use
common sense when operating a power tool. Do
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.
WARNING. Read and understand 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 below refers to your
mains-operated (corded) power tool or battery-operated
(cordless) power tool.
• Use safety equipment. Always wear eye protection.
Safety equipment such as a dust mask, non-skid
safety shoes, hard hat, or hearing protection used for
appropriate conditions will reduce personal injuries.
• 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.
• Remove any adjusting key or wrench before
turning the tool on. A wrench or a key that is left
attached to a rotating part of the power tool may
result in personal injury.
• Do not overreach. Keep proper footing and balance at
all times. This enables better control of the power tool
in unexpected situations.
• Dress properly. Do not wear loose clothing or jewellery.
Keep your hair, clothing and gloves away from moving
parts. Loose clothes, jewellery or long hair can be
caught in moving parts.
• If devices are provided for the connection of dust
extraction and collection facilities ensure that these
are connected and properly used. Use of these devices
can reduce dust-related hazards.
Save these instructions
Work area
• Keep work area clean and well lit. Cluttered and dark
areas invite accidents.
• 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.
• Keep children and bystanders away while operating a
power tool. Distractions can cause you to lose control.
Electrical safety
• Power tool plugs must match the outlet. Never modify
the plug in any way. Do not use any adapter plugs with
earthed (grounded) power tools. Unmodified plugs and
matching outlets will reduce risk of electric shock.
• 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.
• Do not expose power tools to rain or wet conditions.
Water entering a power tool will increase the risk of
electric shock.
Power tool use and care
• 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.
• When operating a power tool outdoors, use an
outdoor extension cord suitable for outdoor use. Use
of a cord suitable for outdoor use reduces the risk of
electric shock.
• Do not force the power tool. Use the correct power
tool for your application. The correct power tool will
do the job better and safer at the rate for which it
was designed.
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the nameplate of the tool. A power source with a voltage
greater than that specified for the tool can result in
serious injury to the user, as well as damage to the tool.
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.
Always remove the plug from the mains socket before
making any adjustments or maintenance, including
changing the blade.
• When operating the saw, use safety equipment including
safety goggles or shield, ear protection, dust mask and
protective clothing including safety gloves.
• Do not use this saw to cut firewood.
• Ensure that the lighting is adequate.
• Keep the area free of tripping hazards.
• Do not use the power tool if the switch does not
turn it on and off. Any power tool that cannot be
controlled with the switch is dangerous and must be
repaired.
• Disconnect the plug from the power source before
making any adjustments, changing accessories, or
storing power tools. Such preventive safety measures
reduce the risk of starting the power tool accidentally.
• 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.
• Maintain power tools. Check for misalignment or
binding of moving parts, breakage of parts and any
other condition that may affect the power tool’s
operation. If damaged, have the power tool repaired
before use. Many accidents are caused by poorly
maintained power tools.
• Do not let anyone under the age of 18 years operate
this saw.
• Always stand to one side when operating the saw.
• Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges are
less likely to bind and are easier to control.
• 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. Use of the power tool
for operations different from intended could result in a
hazardous situation.
• Never use a cracked or distorted saw blade. Only use
sharp blades.
• When cutting round wood, use clamps that prevent the
work piece from turning on both sides of the blade.
• Never use your hands to remove sawdust, chips or waste
close to the blade.
• Use only blades as recommended.
• Do not use blades of High Speed Steel (HSS blades)
• Do not use a blade unless the rated blade speed exceeds
the saw no-load speed.
Service
• Rags, cloths, cord and string and the like should never
be left around the work area.
• Avoid cutting nails. Inspect the work piece and remove
all nails and other foreign objects before beginning
sawing.
• Support the work properly.
• Never reach over the blade to remove waste or off cuts.
• Have your power tool serviced by a qualified repair
personnel using only identical replacement parts.
This will ensure that the safety of the power tool
is maintained.
Additional safety rules for circular saws.
Warnings. Before connecting a tool to a power source
(mains switch power point receptacle, outlet, etc.) be sure
that the voltage supply is the same as that specified on
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• Do not attempt to free a jammed blade before first
switching off the machine.
• Do not slow or stop a blade with a piece of wood. Let
the blade come to rest naturally.
• If you are interrupted when operating the saw, complete
the process and switch off before looking up.
• Periodically check that all nuts, bolts and other fixings
are properly tightened.
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:
• Contact with the blade.
• Kickback of work piece and parts of work piece.
• Blade fracture
• Do not store materials or equipment above a machine
in such a way that they could fall into it.
• Always hold the saw on parts that are insulated. If you
accidentally cut into hidden wiring or the saw’s own
cable, the metal parts of the saw will become “live”.
• Never saw near combustible liquids or gases.
• Note the direction of rotation of the motor and the
blade.
• Catapulting of blade pieces.
• Damage to hearing if effective earmuffs are not worn.
• Harmful emissions of sawdust when the machine is
used in closed rooms. Always use supplementary dust
extraction where possible.
• Do not use blades that are deformed or cracked.
• Do not lock the movable guard in the open position and
always ensure that it is working properly, freely rotating
and returning to fully cover the teeth of the blade.
• Fully unwind cable drum extensions to avoid potential
overheating.
• When an extension cable is required, you must ensure
that it has the correct ampere rating for your power tool
and has a safe electrical condition.
• The base plate must always be held firmly against
the material being cut to reduce saw vibration, blade
jumping and blade breakage.
• Do not cut materials containing asbestos.
• Do not use metal or stone cutting blades. Only use
wood saw blades.
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.
Contents of Carton
The GMC MX1275 Circular Saw is supplied with the
following accessories as standard:
• Hex key (stored in holder on power cable)
• Parallel fence guide
• TCT blade (fitted)
• Instruction Manual
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.
Assembly
The Saw is packed, fully assembled.
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13
Know your product
14
1. Trigger switch
2. Lock-off button
3. Motor housing
5
4. Main handle
5. Front handle
10
6. Bevel adjustment knob
7. Bevel scale
15
16
8. Parallel fence locking knob
9. Parallel fence
10. Blade guard lever
11. Retracting blade guard
12. Base plate
13. Fixed blade guard
14. Dust extraction port
15. Depth locking lever
16. Cut depth indicator
17. Spindle lock button
18. Blade
7
6
12
18
11
8
9
17
21
1
19. Blade key storage area
20. Hex key
21. Sighting notch
2
4
3
20 19
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Overview
Adjusting the depth locking lever
If the locking lever cannot be tightened enough to lock
the pivot point, it is time to adjust it.
1. Ensure the power is
disconnected from the
mains socket.
The saw is capable of ripping and cross cutting
hardwoods, softwoods and man made boards quickly,
accurately and safely.
If the tool becomes too hot, let it run under no load for
2–3 minutes to cool the motor.
The quality of the cut will improve as the number of blade
teeth increases.
The blade cuts on an upward stroke and may chip the
uppermost surface or edges of your work piece. When
cutting, ensure that your uppermost surface is a non-
visible surface when your work is finished.
2. With a pair of circlip pliers
or a flat screwdriver blade,
carefully remove the circlip
from the pivot point nut.
3. Take off the lever and move
it back one section.
By slackening the bevel adjustment knob (6), the body
and the blade of the saw can be tilted to any angle up to
45° for making angle cuts. Please note that the maximum
depth of cut is reduced when cutting at an angle.
4. Replace lever and carefully re-fit the circlip.
5. Check the pivot point now locks tight when the lever is
pushed over to tighten.
Adjusting the bevel angle
A fixed guard (13) encloses the upper part of the
blade. As the saw advances through the work piece, the
retracting blade guard (11) is pushed back by the edge
of the wood to expose only that part of the blade which
is needed. When the blade clears the work, the retracting
blade guard snaps back to completely enclose the blade.
Caution. Always ensure that the saw is switched off and
unplugged from the power supply before making any
adjustments.
1. Loosen the bevel
adjustment knob (6).
Adjusting the cutting depth
Caution. Always ensure that the saw is switched off and
unplugged from the power supply before making any
adjustments.
2. Tilt the body of the saw
until the required angle is
reached, using the bevel
scale (7) as a guide.
3. For accurate work it is
1. Ensure that the saw is facing away from you.
2. Loosen the depth locking lever (15).
necessary to make a trial
cut, measure the work and
reset the angle until the correct setting is achieved.
4. Tighten the bevel adjustment knob (6) to secure the
base plate.
3. Hold the base plate flat
against the edge of the
work piece and lift the
body of the saw until the
blade is at the right depth
- as shown on the indicator
(16).
4. Tighten the depth locking
lever (15).
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Under bench use
Making a cut
1. Set the saw into the bench as required, ensuring the
saw is secured adequately.
1. Adjust the depth and angle of cut as required.
2. Plug in the machine and start the motor.
3. Line up your pencil line with the correct sighting notch
2. Attach a vacuum adapter to the saw.
3. Ensure the retracting blade guard can retract and
return freely, operating as designed, before plugging
cordset in the mains socket.
- for 90° cuts use the right hand (when viewed from
the operators perspective) sighting notch (a) and for
45°
cuts use the left hand sighting notch (b).
4. Run saw up to ensure it is running smoothly before
attempting any cutting.
a
b
5. Make sure guarding is suitable so that the operator
cannot touch the saw blade when the blade is
spinning.
6. Make sure an anti-kickback device is fitted to your saw
bench.
7. Make sure a suitable safety off switch is fitted to the
saw bench. The saw switch may then be locked on
using a spring clamp, cable tie or similar and then
plugged into the safety socket on the saw bench. This
clamp MUST be taken off when the saw is removed
from the saw bench.
8. Using all safety equipment make a test cut in an off
cut piece of material making sure all guarding is set up
correctly before continuing with your bench sawing.
90˚ Cuts
45˚ Cuts
4. When the blade is at its maximum speed
(approximately 2 seconds), slowly push the saw
forward using both hands.
Note. Use only enough pressure to keep the saw cutting.
Do not force the saw so that there is an appreciable
slowing of the motor. Allow the blade and the saw to do
the work.
Switching on and off
1. Connect the plug to the power supply.
2. To switch on the saw, press
the lock-off button (2)
and squeeze the trigger
switch (1).
3. When you release the
trigger, the machine turns
off and re-engages the
safety lock-off switch to
help prevent accidental
operation.
Caution. Allow the blade to come to a complete standstill
before setting the saw down.
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Using the parallel fence guide
The parallel fence allows you to make parallel cuts in a
sheet of wood, all at the same width.
Caution. Always ensure that the saw is switched off and
unplugged from the power supply before making any
adjustments.
1. Slide the parallel fence (9) through the slots in the
base plate.
2. Turn the blade bolt anti-clockwise using the hex key
(20) provided.
3. Remove the outer blade flange and the blade bolt.
4. Retract the lower blade guard (11) using
the lever (10).
5. Remove the saw blade from
the inner flange and pull it out.
6. Clean the saw blade flanges
thoroughly before mounting the
new saw blade.
7. Mount the new saw blade in
reverse order and tighten the
blade bolt.
2. Adjust the guide to the required width and secure it in
position with the locking knob (8).
3. Ensure that the guide rests against the wood along its
entire length to give a consistent parallel cut.
Warning. The direction in
which the blade rotates has to be the same as the
direction of the arrow marked on the housing.
8. Ensure that the spindle lock button (17) is released.
9. Before using the saw again, check that the safety
devices are in good working order.
Dust extraction
You can connect the tool to a vacuum system via the dust
extraction port (14).
Changing the blade
Caution. Always ensure that the saw is switched off and
unplugged from the power supply before making any
adjustments.
1. Rotate the saw blade by
hand whilst depressing the
spindle lock button (17)
until the blade locks.
Important. After replacing the saw blade, make sure that
the saw blade runs freely by turning the blade by hand.
WARNING: Plug the machine in to a power socket and
run the saw under no load to check that it runs smoothly
before using it to cut any material.
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Maintenance
1. Keep the tool’s air vents unclogged and clean at
all times.
2. Remove dust and dirt regularly. Cleaning is best done
with a soft rag or a soft brush. Wear safety glasses to
protect your eyes while cleaning.
3. Re-lubricate all moving parts at regular intervals.
4. If the body of the saw needs cleaning, wipe it with
a soft damp cloth. A mild detergent can be used but
nothing like alcohol, petrol or other cleaning agent.
5. Never use caustic agents to clean plastic parts.
Caution. Water must never come into contact with
the saw.
General inspection
Regularly check that all the fixing screws are tight.
They may vibrate loose over time.
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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Carefully read the entire Instruction Manual
before using this product.
With continuing product development changes may
have occurred which render the product received
slightly different to that shown in this instruction
manual. The manufacturer reserves the right to
Before returning this product for a
Warranty Claim or any other reason
Please Call 1300 880 001 (Australia)
or 0800 445 721 (New Zealand)
change specifications without notice. Note:
Specifications may differ from country to country.
When you make your call, please have
the following information at hand:
• GMC Product Type • GMC Product Code
A GMC Service Engineer will take your call and, in
most cases, will be able to solve your problem over
the phone.
The GMC 777 Helpline operates from 7am to
7pm, 7 days a week (EST). This allows you
to contact GMC directly with any queries and
technical questions you have regarding
our products.
You are welcome to use this phone-in service to
make suggestions or give comments about any
GMC product.
45–55 South Centre Road
Melbourne Airport
Victoria, Australia 3045
Tel: (03) 8346 1100 Fax: (03) 8346 1200
Save this Manual for future reference.
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