GP13 - Sander HiKOKI - Free user manual and instructions

Product Type	1/4 Sheet Palm Sander
Brand	HiKOKI
Model	GP13
Power Source	Corded Electric
Input Power	152 W
No-Load Speed	10,000 OPM
Orbit Diameter	1.0 mm
Sanding Pad Size	1/4 Sheet (115 x 140 mm)
Paper Attachment	Clamp
Dust Collection	Internal Dust Bag and Vacuum Adapter
Weight	1.2 kg
Dimensions (L x W x H)	120 x 70 x 140 mm
Cable Length	2.0 m
Vibration Level	7.5 m/s²
Noise Level	80 dB(A)
Soft Grip	Yes
Variable Speed	No
Maintenance	Clean dust filter and vent regularly; replace carbon brushes when worn
Safety Features	Lock-On Button, Double Insulation
Spare Parts Available	Carbon Brushes, Pad, Dust Bag

Frequently Asked Questions - GP13 HiKOKI

How do I change the sanding paper on the HiKOKI GP13?

To change the sanding paper, loosen the two clamps on the front and rear of the pad by pulling them outwards. Insert the new 1/4 sheet paper under the clamps, then push the clamps back to secure.

What type of sanding paper does the GP13 use?

The GP13 uses 1/4 sheet sanding paper, approximately 115 x 140 mm. Use standard hole-punched paper for dust extraction.

How do I attach the dust bag?

Slide the dust bag adapter onto the dust port at the back of the sander, then attach the bag. For vacuum extraction, connect a vacuum hose directly to the adapter.

Is the HiKOKI GP13 variable speed?

No, the GP13 operates at a fixed speed of 10,000 OPM. It does not have variable speed control.

How do I clean the dust filter?

Remove the dust bag and tap the filter gently. For deep cleaning, use a soft brush or compressed air. Do not wash the filter if it's non-washable; replace if damaged.

Why is my sander vibrating excessively?

Excessive vibration may be due to worn sanding paper, a damaged pad, or debris in the mechanism. Check the pad for wear and tighten the paper properly. If persists, inspect the bearing or motor mount.

How do I replace the carbon brushes?

Unplug the sander. Remove the brush caps on both sides using a screwdriver. Pull out the worn brushes and insert new ones (same size). Tighten the caps securely. Run the sander for a few minutes to seat the brushes.

Can I use the GP13 for paint removal?

Yes, but use a coarse grit sanding paper (e.g., 40-60 grit) and ensure proper dust extraction. The 1.0 mm orbit is suitable for light to medium removal.

What is the warranty period for the HiKOKI GP13?

The standard warranty is 2 years for non-professional use. Check your local dealer for details, as warranty may vary.

Where can I buy spare parts for the GP13?

Spare parts such as carbon brushes, pads, and dust bags are available at HiKOKI authorized service centers and online retailers. Use the part numbers listed in the manual.

USER MANUAL GP13 HiKOKI

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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.

Cluttered and dark areas invite accidents.

b) Do not operate power tools in explosive atmospheres, such as in the presence of fl ammable liquids, gases or dust.

Power tools create sparks which may ignite the dust of fumes.

c) Keep children and bystanders away while operating a power tool.

Distractions can cause you to lose control.

2) Electrical safety

a) 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.

Unmodifi ed 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.

Use of a cord suitable for outdoor use reduces the risk of electric shock.

3) Personal safety

a) 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.

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.

A wrench or a key left 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. Keep your hair, clothing and gloves away from 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.

Use of these devices can reduce dust related hazards.

4) Power tool use and care

a) 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.

b) 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.

c) 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.

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.

Use of the power tool for operations different from intended could result in a hazardous situation.

5) Service

a) Have your power tool serviced by a qualified repair person using only identical replacement parts.

This will ensure that the safety of the power tool is maintained.

PRECAUTION

Keep children and infi rm persons away.

When not in use, tools should be stored out of reach of children and infi rm persons.

PRECAUTIONS ON USING GRINDER

1. Never operate these power tools without Wheel Guards.
2. Use only grinding wheels with a "Safe Speed" at least as high as the "No-Load RPM" indicated on the power tool nameplate.

SPECIFICATIONS

Voltage (by areas)*	(110 V, 115 V, 120 V, 127 V, 220 V, 230 V, 240 V)
Power Input* 570 W
No-Load Speed* 4800/min
Wheel sizeexternal dia. 125 mmthickness 19 mmhole dia. 12.7 mm
Weight (without cord) 5.5 kg

* Be sure to check the nameplate on product as it is subject to change by areas.

STANDARD ACCESSORIES

(1) Wrench ....1

Standard accessories are subject to change without notice.

APPLICATIONS

○ Removal of casting fin and finishing of various types of steel, bronze and aluminum materials and castings.
○ Grinding of welded sections or sections cut by means of a cutting torch.
○ Grinding of synthetic resins, slate, brick, marble, etc.

PRIOR TO OPERATION

1. Power source

Ensure that the power source to be utilized conforms to the power requirements specified on the product nameplate.

2. Power switch

Ensure that the power switch is in the OFF position. If the plug is connected to a receptacle while the power switch is in the ON position, the power tool will start operating immediately, inviting serious accident.

3. Extension cord

When the work area is removed from the power source. Use an extension cord of sufficient thickness and rated capacity. The extension cord should be kept as short as practicable.

4. Confirming condition of the environment

Confir rm that the work site is placed under appropriate conditions conforming to prescribed precautions.

When grinding a thin steel plate, depending upon the state of the workbench, a loud noise will be created due to resounding noise from the steel plate being ground. To eliminate unwanted noise in this instance, place a rubber mat beneath the material to be ground.

5. Fitting the wheel guard

The wheel guard is a protective device to prevent injury should the grinding wheel shatter during operation. Ensure that the guard is properly fitted and fastened before commencing grinding operation.

6. Grinding wheel

Ensure that the grinding wheel to be utilized is the correct type and free of cracks or surface defects. Also ensure that the grinding wheel is properly mounted and the wheel nut is securely tightened. Refer to the section on "MOUNTING AND DISMOUNTING THE GRINDING WHEEL."

7. Conducting a trial run

Before commencing grinding operation, the machine should be given a trial run in a safe area to ensure that it is properly assembled and that the grinding wheel is free from obvious defects. Recommended trial run durations are as follows:

After replacing grinding wheel 3 minutes or more

Prior to starting routine work .... 1 minute or more

HOW TO USE

1. To prolong the life of the machine and ensure a first class finish, it is important that the machine should not be overloaded by applying too much pressure. In most applications, the weight of the machine alone is sufficient for effective grinding. Too much pressure will result in reduced rotational speed, inferior surface finish, and overloading which could reduce the life of the machine.

2. Operating the switch

When the trigger is pulled, the switch is turned ON; when the trigger is released, the switch is turned OFF. After pulling the trigger, when the stopper is pushed, the switch remains in the ON position even when releasing the finger from the trigger, rendering the stopper very convenient when using the grinder continuously over an extended period. When the trigger is pulled again, the stopper is released.

3. Convenient hanger

When using the grinder over a long period, utilize the provided hanger to reduce operator fatigue.

CAUTION

When the grinder starts up, be sure to step away for a moment from the grinding wheel's plane of revolution.

○ After switching off the machine, do not put it down until the grinding wheel has come to a complete stop. Apart from avoiding serious accidents, this precaution will reduce the amount of dust and swarf sucked into the machine.

○ By all means avoid using grinding wheels with overstandard dimensions. If grinding wheels which are too large are used, the peripheral velocity of the grinding wheel will exceed the safety limits, and breakage may result.

KINDS OF GRINDING WHEELS AND THEIR APPLICATIONS

☐ In grinding operation, the most important matter to ensure effective operation is to select a grinding wheel which conforms to the material to be ground. Provided for the HiKOKI Electric Grinder are grinding wheels appropriate for steel material grinding, material discrimination testing by sparks of steel material, finishing of welded portions, and so on.

When using the Grinder on nonferrous metals, cast iron, stone and so on, select a grinding wheel according to the following standards. Many grinding wheels conforming to these materials to be ground are sold on the market, allowing customers to purchase the grinding wheel fitted to the application.

Material to be ground	Grain Grading		Bonding (Hardness)	Binding material	Remarks
Welded portion of general steel materials	A 36 P V		Standard accessory
Cast iron C 16 P B
Bronze and brass C	24 P V
Aluminum C 30 Q B
Marble C 36 M V
Granite C 16 K V

MOUNTING AND DISMOUNTING THE GRINDING WHEEL

CAUTION

To avoid serious accident, ensure the switch is in the OFF position, and the power source is disconnected.

When attaching or removing the grinding wheel, proceed as shown in Fig. 2. On the wheel shaft there is a hole for locking the shaft in position. A rod is inserted into this hole to keep the shaft from rotating. Then turn the nut holding the grinding wheel in place.

CAUTION

Do not fasten too tightly the nut holding the grinding wheel in place. If this nut is excessively tightened, the grinding wheel may split. The nut's screws are threaded in the directions in which they will be tightened by rotation: therefore, there is no possibility of their loosening during operation.

MAINTENANCE AND INSPECTION

1. Inspecting the wheel

Ensure that the wheel is free of cracks and surface defects.

2. Inspecting the mounting screws

Regularly inspect all mounting screws and ensure that they are properly tightened. Should any of the screws be loose, retighten them immediately. Failure to do so could result in serious hazard.

3. Maintenance of the motor

The motor unit winding is the very "heart" of the power tool.

Exercise due care to ensure the winding does not become damaged and/or wet with oil or water.

4. Inspecting the carbon brushes (Fig. 3)

The motor employs carbon brushes which are consumable parts. Since an excessively worn carbon brush can result in motor trouble, replace the carbon brushes with new ones having the same carbon brush No. shown in the figure when it becomes worn to or near the “wear limit”. In addition, always keep carbon brushes clean and ensure that they slide freely within the brush holders.

5. Replacing carbon brushes

Disassemble the brush caps with a slotted-head screwdriver. The carbon brushes can then be easily removed.

6. Service parts list

CAUTION

Repair, modification and inspection of HiKOKI Power Tools must be carried out by a HiKOKI Authorized Service Center.

This Parts List will be helpful if presented with the tool to the HiKOKI Authorized Service Center when requesting repair or other maintenance.

In the operation and maintenance of power tools, the safety regulations and standards prescribed in each country must be observed.

MODIFICATIONS

HiKOKI Power Tools are constantly being improved and modified to incorporate the latest technological advancements.

Accordingly, some parts may be changed without prior notice.

NOTE

Due to HiKOKI's continuing program of research and development, the specifications herein are subject to change without prior notice.

一般安全規則

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Koki Holdings Co., Ltd.

806

Code No. C99035233 N

Printed in Japan