Nitto Kohki Myton MYS-40 User manual

Professional tool Pneumatic sander
Model: MYS-40
 The end tool in the drawing is not included with the tool.
[Specifications]
Model MYS-40
Maximum operating pressure MPa 0.6
Air consumption (No load) m3/min 0.45
Rated speed (No load) min-1 13700
Abrasive Disc (paper) diameter mm 100
Mass (weight) kg 1.1
Sound pressure level *1 dB (A) 82
Sound power level *1 dB (A) 93
Vibration level *2 m/s2≤2.5
Thread size of Air Inlet Rc 1/4
*1 Based on the ISO15744 measurement standard.
*2 Based on the 3 axes combined value measurement standard of the
ISO28927-3 of the hand-held tool frequency correction vibration
acceleration effective value.
 Please read manual carefully before you attempt to use your tool so that you may use it properly
and safety.
 Keep the manual handy - so you can use it whenever necessary.
• Due to continuous product development/improvement, the specifications and configurations in this
document are subject to change without prior notice.
INSTRUCTION
MANUAL
Manufactured by.
NITTO KOHKI CO., LTD. 9-4, Nakaikegami 2-chome, Ohta-ku, Tokyo, 146-8555, Japan
Tel : [phone] Fax : [phone]
TQ15292-0 06/2017
(Original Instructions)
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Contents
Precautions on Use (Make sure to follow the
instructions given)................................................. 1
General Power Tool Safety Warnings ...................1
General Pneumatic Tool Safety Warnings ............4
Safety Warnings for PNEUMATIC SANDER.........4
Product Specific Safety Rules...............................8
1 Application ......................................................... 9
2 Checking Inside the Package............................ 9
3 Part Names........................................................ 9
4 Air Supply ........................................................ 10
5 Preparation...................................................... 11
Replacing the Abrasive Disc ...............................11
Start and stop......................................................12
Adjusting the rotation speed ...............................12
6 How to Use...................................................... 13
Grinding work......................................................13
7 Maintenance and Inspection............................ 14
Storing the tool....................................................14
Maintenance and Inspection...............................14
Disposal ..............................................................15
8 Exploded View/Parts List................................. 16
MYS-40 Exploded View/Parts List ......................16
Instructions
Thank you very much for your purchase of this NITTO KOHKI product.
Before using your tool, please read this manual carefully so that you may use it properly to get the most out of it.
Please keep the manual handy - so you can use it whenever necessary.
 English : Please ask your dealer or distributor for instruction manual in local language(s).
 German : Bitte fragen Sie lhren Händler nach eine Betriebsanleitung in Landessprache.
 French : S'il vous plait, veuillez demandez á votre foumisseur de manuel instruction en langue locale.
 Spanish : Por favor, cantacte con su distribuidor para el manual de instrucciones en español.
 Portuguese : Por favor pessa ao seo agente ou distribuidor o manual de instrucces ih linguagen local.
 Italian : Per Manuale Istruzioni in lingua locale Vi preghiamo di rivolgervi al rivenditore o distributore.
 Dutch : Vraag uw handelaar om een nederladstalige gebruiksaanwijzing.
 Swedish : Be er lokala Åtreförsäljare eller distributör om manualer pá svenska.
 Danish : Venligst henvend Dem til den danske distributør for instructions manualer.
 Polish : Prosze pytac swojego dealera lub dystrybutora o instrukcje obslugi w jezyku localnym.
 中文 : 請向當地供應商或經銷商詢問中文使用說明書
The following Safety notations are used throughout the manual to highlight safety precautions for the user and for the
tool.
WARNING: Indicates a potentially hazardous situation which, if not avoided by following the
instructions given, could result in death or serious injury.
CAUTION: Indicates a potentially hazardous situation which, if not avoided by following the
instructions given, could result in injury or material damage.
* Please note, however, that failure to observe safety precautions under the “ CAUTION” category could result in
a serious occurrence depending on the situation.
Please observe all safety precautions in the manual.
CAUTION: Important precautions for tool setup, operation and maintenance.
About pictograms
WARNING: It might be dangerous to operate the tool if the instructions supplied are not followed.
Using this tool improperly could result in serious injury. Read the instruction manual before
use.
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California Proposition 65
WARNING
Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains
chemicals known [to the State of California] to cause cancer birth defects or other reproductive harm.
Some examples of these chemicals are:
 Lead from lead-based paints,
 Crystalline silica from bricks and cement and other masonry products, and
 Arsenic and chromium from chemically-treated lumber.
Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure
to these chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust
masks that are specially designed to filter out microscopic particles.
Precautions on Use (Make sure to follow the instructions given)
Before using your tool, to avoid personal injury always take the basic precautions explained in later sections.
General Power Tool Safety Warnings
Personal safety
WARNING
 Dress properly.
Do not wear loose clothing or jewelry. There is a
danger of being caught in moving parts. Wear a
pair of non-slip shoes. If your hair is long, wear a
protective hair covering to contain your hair.
 Always wear eye protection.
Corrective glasses are not considered eye
protection. Always wear appropriate eye
protection.
 Wear a dust mask.
When dust is generated in the workplace, wear a
dust mask.
 Use a dust collector or dust collection
equipment correctly.
If a dust collector or dust collection equipment
are being used, check that these are connected
and used properly. Use of a dust collector can
reduce risk caused by dust.
 When loud noise is generated in the workplace,
wear a hearing protection.
 Do not overreach.
Keep proper footing and balance at all times.
 Be on your guard when working.
Do not use the tool when you are tired.
When you use the tool, be sure about the handling method, how to work, and pay sufficient attention to the
surrounding environment.
 Never touch the tip of moving parts when the tool is running.
Also, do not direct the tip of moving parts toward people or animals.
 Be aware of tool vibration and recoil. Some tools can cause a considerable amount of vibration.
Depending on how the product is operated, the type of tool setting, and the length of operation, it could place a
tremendous burden on your hands, arms and body.
The tool could cause a vibration injury or tendonitis. Avoid long-term use and take appropriate breaks.
Consult a doctor if you experience any discomfort or pain while operating the tool.
Protective hair
covering
Dust mask
Work clothes
Safety shoes
Protective
goggles
Earplugs
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Work area safety
WARNING
 Do not use the tool at home.
This is a professional tool (industrial or work tool for business). Do not bring the tool home and use it there.
 Keep the work area clean.
Working in a messy work area or work table could cause an accident.
 Be cautious about the work area.
Do not expose the tool to rain.
Do not use the tool in a damp or wet place.
Keep the work area well lit.
 Do not operate the tool in an explosive atmosphere, such as in the
presence of flammable liquids (thinner, lacquer, gasoline, etc.) or
gas.
 Do not let children come close to the work area.
Keep children and bystanders away while operating tool.
 Some tools generate loud noise.
Check that the noise regulations of each area are complied with.
 When work has to be done in high locations, make sure there is
nobody underneath the work area.
If the tool or material is dropped, it could cause an accident or
injury.
 Before starting operation, make sure that there is no conduit,
water pipe or gas pipe by your work area.
If a tool touches a buried object, it could cause electrical shock or leakage, which could cause an accident.
Before starting to work
WARNING
 Perform inspection before using the tool.
Before using the tool, check for loose screws on the tool and for damage on the protective cover or other parts,
and make sure that the tool operates normally and demonstrates prescribed functions.
Check the position adjustment and tightening status of moving parts, parts damage, attachment status, and all
other locations for issues that could affect operation.
For parts replacement and repair, follow the instructions indicated in the instruction manual.
If there are no instructions in the instruction manual, contact the retailer where you purchased the tool or the
nearest NITTO service member store.
Do not use the power tool if the switch does not turn it ON and OFF.
 Make sure to properly attach the tip tool.
If the tip tool is not attached properly, there is a risk of jumping out or damage, which could result in injury.
 After adjustment, be sure to remove tools such as spanners, wrenches, etc.
 Use appropriate tools.
Do not force small tools to do the job of a heavy duty tool. Do not use tools for purposes not intended.
 Do not use tools in an unreasonable manner.
When the specifications are followed, tools can be used efficiently and safely.
 Secure workpieces.
Where possible use clamps or a vise to hold the work. It is safe to hold the workpieces by hand and both hands
can be used for operation.
Precautions on Use
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Handling tools
WARNING
 Storing the tool
When the tool is not used, store the tool in a dry location. Also, store the tool out of the reach of children.
For some tools, the storage temperature and humidity are specified. Store the tool in an appropriate location.
 Be cautious about how the tool is carried.
Do not carry the tool with your hand touching the operation switch.
 Do not leave the tool while the tool is still running.
Do not leave the work area until you turn off the operating switch, remove the power source and the tool
completely stops.
 Do not allow the following chemicals to come into contact with the tool, as parts could deteriorate.
Acetone, benzine, thinner, ketone, ether, trichlorethylene and other similar chemicals
Maintenance and Inspection
WARNING
 Do not disassemble or alter the tool.
Using the tool after disassembling or remodeling it could cause an accident or injury.
 Inspect tip tools and accessories.
Always inspect tip tools and accessories for damage or deterioration before attaching them to the tool.
If damage or deterioration is found, request repair from the retailer where you purchased the tool or the nearest
NITTO service member store.
 Inspect for damaged sections.
Sufficiently check for damage on accessories or other parts, that the tool operates normally, and that work can
be performed appropriately.
If there are accessories or parts that have been damaged or could hinder work, request repair from the retailer
where you purchased the tool or the nearest NITTO service member store.
 Request repair from a dedicated store.
For repair or replacement of parts, request service from the retailer where you purchased the tool or the nearest
NITTO service member store.
Repair requires special knowledge and skills. If repair is performed at a place other than a specialty store, the
tool may not demonstrate its full performance or it could lead to an accident or injury.
Request repair with the failed status kept intact. When requesting a repair, do not throw away damaged parts. It
could be important information for investigating the failure cause so do not change the status.
 Use genuine parts.
If inappropriate parts are used, it could cause accident or injury.
Genuine parts are listed in the instruction manual or brochure. Inquire at the retailer where you purchased the
tool or the nearest NITTO service member store.
 Do not remove the labels or plates on the tools.
If labels or plates are broken or peeling, for a replacement label or plate contact the retailer where you purchased
the tool or the nearest NITTO service member store.
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General Pneumatic Tool Safety Warnings
WARNING
 Use the tool with proper air pressure.
If the air pressure is high, the rotation speed and reciprocation frequency become faster, causing damage such
as damage or accelerated wear. Also, unexpected accidents could occur.
 Connect the tool to air piping.
In some factories, other than air piping, there may be other piping such as oxygen, nitrogen, gas, etc. Before
connecting to piping, make sure it is the correct piping.
 Do not start the tool carelessly.
Turn off the operation switch, then attach the Connecting Hose to the tool.
 When attaching, removing, and maintaining accessories, make sure to detach the Connecting Hose from the
tool.
 Be cautious about exhaust.
Pneumatic tool exhaust contains oil and drainage, etc. Be careful about the exhaust direction so that the exhaust
does not directly hit people nearby.
 Do not allow sources of electricity to touch the tool.
The pneumatic tool is not insulated against contact by electric sources. Because there is a risk of electric shock,
do not allow sources of electricity to touch the tool.
CAUTION
 Handle the tool with care.
Rough handling could cause accidents or malfunctions. Do not exert an impact on the tool by throwing or
dropping it.
 Handle the Connecting Hose with care.
Do not carry the tool by holding the Connecting Hose, and do not pull the Connecting Hose to remove it.
Safety Warnings for PNEUMATIC SANDER
The following warnings are those required to be displayed as instructed by ISO11148-8.
General Safety Rules
WARNING
 For multiple hazards, read and understand this instruction manual before installing, operating, repairing,
maintaining, changing accessories on, or working near this tool. Failure to do so can result in serious bodily
injury.
 Only qualified and trained operators should install, adjust or use this tool.
 Do not modify this tool. Modifications can reduce the effectiveness of safety measures and increase the risks
to the operator.
 Do not discard this instruction manual; hand it to the operator.
 Do not use this tool if the tool has been damaged.
 This tool shall be inspected periodically to verify the ratings and markings. When a label/nameplate is
damaged, worn or missing, contact the sales agent through which you have purchased your tool or NITTO
KOHKI Co. Ltd. directly for a replacement.
Precautions on Use
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Projectile Hazards
WARNING
 Be aware that failure of the workpiece or accessories, or even of the inserted tool itself can generate high-
velocity projectiles.
 Always wear impact-resistant eye protection while operating this tool. The grade of protection required should
be assessed for each operation.
 For overhead work, wear a safety helmet.
 The risks to others should also be assessed at this time.
 Ensure that the workpiece is securely fixed.
Entanglement Hazards
WARNING
 Choking, scalping and/or lacerations can occur if loose clothing, personal jewelry, neckwear, hair or gloves are
not kept away from the tool and its accessories.
Operating Hazards
WARNING
 Use of this tool can expose the operator's hands to hazards, including cuts, abrasions and burns. Wear
suitable gloves to protect hands.
 Operators and maintenance personnel shall be physically able to handle the bulk, weight and power of the tool.
 Hold the tool correctly; be ready to counteract normal or sudden movements and have both hands available.
 Maintain a balanced body position and secure footing.
 Release the start-and-stop device if the energy supply is interrupted.
 Use only lubricants recommended by the manufacturer.
 Personal protective safety glasses shall be used; suitable gloves and protective clothing are recommended.
 Inspect the backing pad before each use. Do not use if cracked or broken or if it has been dropped.
 Avoid direct contact with the moving sanding pad in order to prevent pinching or cutting of hands or other
body parts. Wear suitable gloves to protect hands.
 Never run the tool unless an abrasive is applied to the workpiece.
 There is a risk of electrostatic discharge if used on plastic and other non-conductive materials.
 Potentially explosive atmospheres can be caused by dust and fumes resulting from the use of this tool. Always
use dust extraction or suppression systems which are suitable for the material being processed.
Repetitive Motion Hazards
WARNING
 When using this tool to perform work-related activities, the operator may experience discomfort in the hands,
arms, shoulders, neck or other parts of the body.
 While using this tool, the operator should work in a comfortable posture while maintaining secure footing and
avoiding awkward or off-balance postures. The operator should change posture during extended tasks; this
can help avoid discomfort and fatigue.
 If the operator experiences symptoms such as persistent or recurring discomfort, pain, throbbing, aching,
tingling, numbness, burning sensations or stiffness, these warning signs should not be ignored. The operator
should tell their employer and consult a qualified health professional.
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Accessory Hazards
WARNING
 Disconnect the tool from the energy supply before fitting or changing the inserted tool or accessory.
 Avoid direct contact with the inserted tool during and after use, as it can be hot or sharp.
 Use only accessories and consumables that are the sizes and types recommended by the manufacturer of this
tool; do not use accessories or consumables of other types or sizes.
 Grinding wheels and cutting-off tools shall not be used.
 Check that the maximum operating speed of the inserted tool (flap wheels, abrasive belts, fiber discs, backing
pads, etc.), is higher than the rated speed of the sander or polisher.
 Self-fixing sander discs shall be placed concentrically on the supporting pad.
Workplace Hazards
WARNING
 Slips, trips and falls are major causes of workplace injury. Be aware of slippery surfaces caused by the use of
the tool and also of trip hazards caused by the air line or hydraulic hose.
 This tool is not intended for use in potentially explosive atmospheres and is not insulated against contact with
electric power.
 Ensure that there are no electrical cables, gas pipes, etc., which can cause a hazard if damaged by the use of
the tool.
Dust and Fume Hazards
WARNING
 Dust and fumes generated when using this tool can cause ill health (for example cancer, birth defects, asthma
and/or dermatitis); risk assessment and implementation of appropriate controls for these hazards are essential.
 Risk assessment should include risks such as the dust created by the use of the tool and the potential for
disturbing existing dust.
 Operate and maintain this tool as recommended in these instructions to minimize dust or fume emissions.
 Direct the exhaust so as to minimize disturbance of dust in a dust-filled environment.
 Where dust or fumes are created, the priority shall be to control them at the point of emission.
 All integral features or accessories for the collection, extraction or suppression of airborne dust or fumes
should be correctly used and maintained in accordance with the manufacturer's instructions.
 Select, maintain and replace the consumable or inserted tool as recommended in the instruction handbook to
prevent an unnecessary increase in dust or fumes.
 Use respiratory protection in accordance with the employer's instructions and as required by occupational
health and safety regulations.
Precautions on Use
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Noise Hazards
WARNING
 Exposure to high noise levels can cause permanent, disabling hearing loss and other problems, such as
tinnitus (ringing, buzzing, whistling or humming in the ears). Therefore, risk assessment and implementation of
appropriate controls for these hazards are essential.
 Appropriate controls to reduce the risk can include actions such as damping materials to prevent workpieces
from “ringing”.
 Use hearing protection in accordance with the employer's instructions and as required by occupational health
and safety regulations.
 Operate and maintain this tool as recommended in the instruction handbook to prevent an unnecessary
increase in the noise level.
 Select, maintain and replace the consumable or inserted tool as recommended in the instruction handbook to
prevent an unnecessary increase in noise.
 If this tool has a silencer, always ensure it is in place and in good working order when the tool is being
operated.
 The noise-emission value in this manual is measured in accordance with ISO standards. Since the real value
may change depending on the work condition, please use this tool with measurements in the actual condition.
Please don't operate beyond the time set by the region where the tool is used.
Vibration Hazards
WARNING
 Exposure to vibration can cause disabling damage to the nerves and blood supply of the hands and arms.
 Wear warm clothing when working in cold conditions and keep your hands warm and dry.
 If you experience numbness, tingling, pain or whitening of the skin in your fingers or hands, stop using this
tool, tell your employer and consult a physician.
 Operate and maintain this tool as recommended in the instruction handbook to prevent an unnecessary
increase in vibration levels.
 Hold the tool with a light but safe grip, taking account of the required hand reaction forces, because the risk
from vibration is generally greater when the grip force is higher.
 The vibration-emission value in this manual is measured in accordance with ISO standards. Since the real
value may change depending on the work condition, please use this tool with measurements in the actual
condition. Please don't operate beyond the time set by the region where the tool is used.
Additional Safety Instructions
WARNING
 Air under pressure can cause severe injury:
—always shut off air supply, drain hose of air pressure and disconnect tool from air supply when not in use,
before changing accessories or when making repairs;
—never direct air at yourself or anyone else.
 Whipping hoses can cause severe injury. Always check for damaged or loose hoses and fittings.
 Whenever universal twist couplings (claw couplings) are used, lock pins shall be installed and whip check
safety cables shall be used to safeguard against possible hose-to-tool or hose-to-hose connection failure.
 Do not exceed the maximum air pressure stated on the tool.
 Never carry an air tool by the hose.
 When a tool is taken permanently out of service, it is advised that the tool be disassembled and degreased, and
parts be separated by material and recycled locally in the appropriate manner.
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Product Specific Safety Rules
WARNING
 Use an Abrasive Disc having the mounting hole diameter of 16 mm and external dimension of 100 mm (4").
 Do not use Abrasive Discs with the allowable rotation speed (written on the Abrasive Disk, Pad, or package
box) lower than the actual rotation speed of the tool.
 When mounting the Abrasive Disc or Pad, carefully check for cracks and chips.
Do not use Abrasive Discs or Pads that are damaged such as cracks or chips. Also, do not use Abrasive Discs
soaked in liquid such as water.
 When mounting a new Abrasive Disc, place this tool under an iron workbench or in a cast and operate it for 1
minute or more.
At this time, make sure there are no people above the rotating surface of the Abrasive Disc.
If the Abrasive Disc is defective, or in case of improper mounting or wrong dimensions or rotation speed, the
Abrasive Disc may come off and it is extremely dangerous.
 When starting to use this tool, make sure that the rotation speed at 0.6 MPa (6 kgf/cm2) does not exceed the
rotation speed indicated on the label or the tool.
 This tool is dedicated to Abrasive Disc.
Never use Grinding Wheel.
 Always work at the correct angle of 15 to 30 degrees.
15 to 30°
Use surface
Precautions on Use
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1 Application
This tool is a pneumatic hand-held sander for polishing/grinding steel materials, etc. using the Abrasive Disc.
2 Checking Inside the Package
When you open the package box, check the contents of the package and also check for any damage that may have
occurred during transportation.
If an abnormality is found, request service from the retailer where you purchased the tool or the nearest NITTO service
member store.
Package content and accessories Quantity Check
1MYS-40 (main unit) 1
2Back-up Pad 1
35 mm Hex. Socket Screw Key 1
46 mm Hex. Socket Screw Key 1
Package content and accessories Quantity Check
5Bushing R 1/4×NPT 1/4 1
6Instruction Manual (this document) 1
7Caution for Use 1
12 534
3 Part Names
1
2
3
6
7
4
5
8
1Spindle Lock Button
2Grip Tube
3Adjust Valve
4Lock Lever
5Throttle Lever
6Wheel Guard
7Driving Flange
8Outer Flange Ø16

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4 Air Supply
CAUTION
 Remove drainage before stating work.
When drainage enters the tool, the vicinity of the exhaust port freezes, which could cause a loss of power.
1
2
3
4
5
6
7
8
1Compressor
2Air Filter
3Air Regulator
4Lubricator
5Connecting Hose
6Machine Oil
7Coupler
8Tool
Air pressure used
Use the tool with air pressure at 0.6 MPa. If the pressure is too low, the tool cannot demonstrate the required
performance. If it is too high, it could damage parts of the tool. Use an Air Regulator (3) to adjust the pressure to the
appropriate level.
Air line
Use a Connecting Hose (5) with an internal diameter of 9.5 mm (3/8”) between the Compressor (1) and the tool
(8). Compressed air exits the Compressor and cools and moisture condenses. Some moisture could condense
inside the Connecting Hose and get inside the tool, causing a malfunction. Install the Air Filter (2) and Lubricator (4)
between the Compressor and the tool.
Machine oil
Install a Lubricator between the Compressor and the tool, and be sure to use machine oil (ISO VG-10).
Failure to do so could cause damage to the tool. Also, if lubricating oil with high viscosity is used, it could cause
performance degradation.
Refueling
Each day before starting work detach the Connecting Hose and refill a few drops of machine oil (ISO VG-10) (6) from
the Coupler (7) to the tool.
After refueling, connect the Connecting Hose and perform idle operation for a few seconds to allow the oil to blend in
the entire tool.
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5 Preparation
WARNING
 During work, be sure to wear eye protection, earplugs, a dust mask, and gloves (other than knitted gloves).
 When replacing or adjusting the Abrasive Disc or parts, be sure to detach the Connecting Hose from the tool.
 Never touch moving parts while the tool is running.
 After stopping work, the tip of the grinding tool will continue to rotate for a while.
Never touch moving parts until the tool completely stops.
Replacing the Abrasive Disc
WARNING
 Before replacing the Abrasive Disc, always turn OFF the Valve Ring or Throttle Lever and detach the
Connecting Hose from the tool.
Attaching
1 Insert the Outer Flange (6) to the Back-up Pad
(4) and Abrasive Disc (5)
2 While holding the Spindle Lock Button (1),
turn the Driving Flange (3) by hand, and push
the Button at the position where rotation stops
3 Align the notched part of the Disc Lock (6)
with the key, and attach the Back-up Pad (4)
and the Abrasive Disc (5) together
4 Using a 6 mm Hex Socket Screw Key (8),
tighten the Outer Flange Bolt (7) to the
Spindle (2)
When you release your hand from the Spindle Lock
Button (1), the lock is released automatically.
1
2
3
4
5
6
7
8
Removing
1 While holding the Spindle Lock Button (1),
turn the Abrasive Disc (5) by hand, and push
the Button at the position where rotation stops
2 Using a 6 mm Hex Socket Screw Key (8),
loosen the Outer Flange bolt (7)
Now the Abrasive Disc can be removed.
3 Remove the Back-up Pad (4) and Abrasive
Disc (5)
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12
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Start and stop
Start
1 Check that the Throttle Lever is in the OFF status
and insert the Connecting Hose into the Coupler of
this tool
2 Hold the tool by hand and while pulling the Lock
Lever (1) toward you, press the Throttle Lever
The tool starts. 1
Throttle Lever
Lock Lever
Stop
1 Release your hand from the Throttle Lever
The Throttle Lever automatically returns to the OFF status.
Adjusting the rotation speed
WARNING
 Never touch the tip of moving parts.
1 Use a flathead screwdriver to turn the Adjust Valve
The air flow rate changed that allows the rotation speed to
be adjusted.
The maximum rotational position is when the screwdriver
groove of the Valve coincides with the axis center of the
main unit. Adjust the position according to the purpose of
use.
Close
Full open
Preparation
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13
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6 How to Use
Grinding work
CAUTION
 Do not press the Abrasive Disc strongly against the working surface.
Doing so could damage parts or damage the Abrasive Disc. Strongly pressing the tool against the working
surface does not change work efficiency.
1 Hold the tool with your hand to start
2 Lightly touch the Abrasive Disc at an angle of 15 to 30
degrees against the working surface
15 to 30°
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14
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7 Maintenance and Inspection
Storing the tool
Store the tool according to the following warnings and cautions.
WARNING
 When the tool is not in use, store out of the reach of children.
CAUTION
 When the tool is not in use, store in a place with little humidity.
 After completing work, lubricate with machine oil (ISO VG-10) from the coupler of the tool and operate a little
before storing.
If the tool is left as is after use, moisture in the air could remain inside the main unit, likely causing rust to occur.
Maintenance and Inspection
WARNING
 For maintenance and inspection, be sure to detach the connecting hose from the tool.
 Use genuine parts.
 Never touch moving parts while the tool is running.
Replenishing grease
Apply grease (Sumitec 305) as needed to the inside of the main unit about once a month according to the following
procedure.
At that time, use an air blower or the like to remove dirt adhering to the muffler. Also, depending on dirt conditions,
replace the muffler as needed. If dirt adheres to the muffler, it could cause a loss of power.
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15
EN
1 Loosen the + countersunk head screw
(1) of the exhaust cover and remove the
exhaust cover (2), muffler (4), spacer (3),
and packing cover (5)5
4
3
2
1
4
1+ Countersunk Head Screw 4×14
2Exhaust Cover
3Spacer
4Muffler
5Packing Cover
2 Use a grease gun to inject grease (Sumitec
305) into the grease inlet (6)
Use a grease gun nozzle with a tip outer diameter
of less than 3 mm.
The nozzle for a grease nipple cannot be used for
injection.
6
3 Perform a trial run and wipe off extra grease that seeps out
Attach a connecting hose to the coupler of the tool and operate the tool.
At that time, grease may scatter from the exhaust part and grease inlet, so operate the tool after confirming that
there are no objects around the tool.
Stop the tool in a few seconds and always detach the tool from the connecting hose, then wipe off any grease
that seeps from the periphery of the spindle.
4 Assembling the exhaust cover
Assemble the exhaust cover by performing the disassembly procedure in reverse.
Insert the muffler under the packing cover so that there is no clearance in the housing.
Disposal
 Separate the tool, accessories, and packing materials for environmentally-friendly recycling.
 When disposing of the tool, follow the rules of each municipality.
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16
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8 Exploded View/Parts List
MYS-40 Exploded View/Parts List
CAUTION
 Users should never perform disassembly of the tool.
This illustration is for reference only.
For repair or replacement of the tool, request service from the retailer where you purchased the tool or the
nearest NITTO service member store.
1
2
3
4
5
6
8
7
11
12
13
14
15
16
17
16
18
19
20
21
22
23
24
25
27
(26)
28
29 30 31 32
32
33
34
35
36
37
(9)
10
39
38 40
41
42
49
47
46
45
44
43
50
51
(52)
53
*1 indicates a consumable item, *2 indicates a commercial item. Parts inside ( ) are components of the above
assembly
.
No. Part no. Part name Quantity
*2 1 TQ00893 Needle Bearing BK0810 1
*1 2 TQ14867 Spiral Bevel Gear 1.25×25 1
*1 *2 3 TP01609 Ball Bearing 6202ZZ 1
4 TQ14868 Spindle 1
5 TP00502 Parallel Key 4×4×9.5 Both Ends Round 1
6 TQ14906 Parallel Key 4×4×13.3 One End Round 1
7 TQ14977 Stop Ring I-0.8×15.4 1
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17
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No. Part no. Part name Quantity
8 TB08883 Bearing Set Screw Ass'y 1 set
10 TB10499 Wheel Guard Ass'y 1 set
(9) (TQ15325) Label Warning Wheel Guard 1
11 TQ14885 Driving Flange 1
12 TQ14991 Outer Flange Ø16 1
13 TP09932 Outer Flange Bolt 1
*1 *2 14 TP03933 Ball Bearing 606ZZ 1
15 TQ14869 End Plate A 1
16 TP00496 Spring Pin 2.5×6 AW 2
17 TQ15014 Cylinder 1
*1 18 TB10330 Blade Ass'y 1 set
19 TP10130 Parallel Key 3×3×10 Both Ends Round 1
20 TQ14940 Rotor 1
21 TP06322 Spacer 8×11×3 1
22 TP14931 End Plate B 1
*1 *2 23 TP00468 Ball Bearing 608ZZ 1
*1 24 TQ14873 Spiral Bevel Gear L1.25×13 1
25 TP10101 Spacer 19×28×2 1
27 TB10425 Housing Sub Ass'y 1 set
(26) (TQ15291) Label Warning 1
28 TQ15005 Plug 40S 1
29 TQ14946 + Countersunk Head Screw 4×14 1
30 TQ14878 Exhaust Cover 1
31 TQ14880 Spacer 1
*1 32 TQ14881 Muffler 1
33 TQ14879 Packing Cover 1
34 TQ14863 Lock Pin 1
35 TQ14865 Pin Guide 1
36 TQ14864 Spring 0.6×6.9×8 1
37 TQ14866 Lock Button 1
38 TP10110 Cap 1
39 TP14948 Back-up Pad 1
40 TP10098 Lock Nut 1
41 TP03468 Lock Ring 1
42 TP15211 Valve Main Unit 1
43 TP03695 Internal Retaining Ring C-12 1
44 TP06326 Spacer 6×12×1.2 1
45 TP11997 O-Ring KS-7 1
46 TP06325 Adjust Valve 1
47 TA99300 Valve Stem Ass'y 1 set
49 TP14340 Torsion Spring 1
50 TP14339 Lock Lever 1
51 TP09434 Spring Pin 2×12 1
53 TA96253 Throttle Lever Ass'y 1 set
(52) (TP01921) Spring Pin 3×18 1
Accessories
No. Part no. Part name Quantity
TP04004 5 mm Hex. Socket Screw Key 1
TP00170 6 mm Hex. Socket Screw Key 1
TP02236 Bushing R 1/4×NPT 1/4 1
TQ15292 Instruction Manual (this document) 1
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Overseas Affiliates / Offices
NITTO KOHKI U.S.A., INC.
46 Chancellor Drive, Roselle, IL 60172, U.S.A.
Tel: [phone] Fax: [phone]
NITTO KOHKI AUSTRALIA PTY.LTD.
77 Brandl Street, Eight Mile Plains, Queensland 4113, Australia
Tel: [phone] Fax: [phone]
NITTO KOHKI (SHANGHAI) CO., LTD.
Room1506, Suite C, Orient International Plaza, No.85
Loushanguan Road, Shanghai 200336, China
Tel: [phone] Fax: [phone]
NITTO KOHKI (SHANGHAI) CO.,LTD. Shenzhen Branch
2005C Shenzhen ICC Tower, Fuhuasanlu 168, Futian District,
Shenzhen, Guangdong 518048, China
Tel: [phone] Fax: [phone]
NITTTO KOHKI CO., LTD., Singapore Branch
10 Ubi Crescent #01-62, Ubi Techpark Lobby D, Singapore
408564
Tel: [phone] Fax: [phone]
NITTO KOHKI CO., LTD., Bangkok Representative
Office
M&A Business Center, Q-House Convent Bldg., 38 Convent
Rd., Silom, Bangrak, Bangkok 10500, Thailand
Tel: [phone] Fax: [phone]
NITTO KOHKI CO.,LTD. India Liaison Office
3rd Floor, Building No.9-A DLF Cyber City, Phase-III,
Gurgaon, Haryana 122002, India
Tel: [phone] Fax: [phone]
NITTO KOHKI CO.,LTD. Mexico Representative Office
OF1109 Torre Corporativo 1 Piso 11 Central Park Armando
Birlain Shaffler #2001 Col Centro Sur, Queretaro, Qro,
C.P.76090, Mexico
Tel: [phone]
NITTO KOHKI EUROPE GMBH
Gottlieb-Daimler-Str. 10, 71144 Steinenbronn, Germany
Tel: [phone] Fax: [phone]
NITTO KOHKI EUROPE GMBH UK BRANCH
Unit A5, Langham Park Industrial Estate, Maple Road, Castle
Donington, Derbyshire DE74 2UT, U.K.
Tel: [phone] Fax: [phone]
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