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Working safely with cut-off machines
Warning!
Read and follow all safety precautions in Instruction Manual – improper use can cause serious or fatal injury.
Contents
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Safety Precautions and Working |
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Techniques |
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Sample applications |
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Manual |
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Cutting wheels |
18 |
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Composite resin cutting wheels |
18 |
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Instruction |
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Maintenance and Care |
22 |
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Diamond cutting wheels |
18 |
Original |
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Main Parts |
24 |
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on chlorine-free paper |
inks contain vegetable oils, paper can be recycled. |
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Printed |
Printing |
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© ANDREAS STIHL AG & Co. KG, 2010 |
0457-186-3021. M0.B10.xxx. 0000000552_001_GB |
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English
This manual contains the safety precautions and recommended cutting techniques outlined in STIHL instruction manuals for gasoline-powered cut-off machines. Even if you are an experienced cut-off machine user, it is in your own interest to familiarize yourself with the latest instructions and safety precautions regarding your cut-off machine.
Please note that the illustrations in the chapter "Main Parts of the Machine" in this manual show the cut-off machine STIHL Cutquik® TS 420.
Other cut-off machine models may have different parts and controls. You should therefore always refer to the instruction manual of your particular cut-off machine model.
Contact your STIHL dealer or the STIHL distributor for your area if you do not understand any of the instructions in this manual.
Working safely with cut-off machines |
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Safety Precautions and
Working Techniques
The use of any cut-off machine may be hazardous. Because a cut-off machine is a high-speed, fast-cutting power tool, special safety precautions must be observed to reduce the risk of personal injury and fire.
It is important that you read, fully understand and observe the following safety precautions and warnings. Read the instruction manual and the safety precautions periodically.
Warning!
Careless or improper use of any cut-off machine may cause serious or fatal injury.
Have your STIHL dealer show you how to operate your cut-off machine. Observe all applicable national, state and local safety regulations, standards and ordinances.
Warning!
Your cut-off machine is for professional use only. Do not lend or rent your cut-off machine without the instruction manual. Be sure that anyone using it understands the information contained in this manual.
A first-time operator should obtain practical instruction before using the machine. Employers should establish a training program for operators of gasoline-powered, hand-held portable cut-off machines to assure safe operation of these machines. These safety precautions and warnings apply to the use of all current STIHL Cutquiks.
Warning!
Use your cut-off machine only for authorized uses. For instance, it is not suitable for cutting wood or wooden objects. Misuse may result in personal injury or property damage, including damage to the machine.
Warning!
Minors should never be allowed to use a cut-off machine. Bystanders, especially children, and animals should not be allowed in the area where a cut-off machine is in use. Never let the cut-off machine run unattended.
Different models may have different parts and controls. See the appropriate section of your instruction manual for a description of the controls and function of the parts of your model cut-off machine.
Safe use of a cut-off machine involves
1.the operator
2.the power tool
3.the use of the power tool.
THE OPERATOR
Physical Condition
You must be in good physical condition and mental health and not under the influence of any substance (drugs, alcohol, etc.) which might impair vision, dexterity or judgment. Do not operate a cut-off machine when you are fatigued. Be alert – if you get tired while operating your cut-off machine, take a break; tiredness may result in loss of control. Working with any cut-off machine can be strenuous. If you have any condition that might be aggravated by strenuous work, check with your doctor before operating a cut-off machine.
Warning!
Prolonged use of cut-off machines (or other machines) exposing the operator to vibrations may produce whitefinger disease (Raynaud's phenomenon) or carpal tunnel syndrome. These conditions reduce the hand's ability to feel and regulate temperature, produce numbness and burning sensations and cause nerve and circulation damage and tissue necrosis. All factors which contribute to whitefinger disease are not known, but cold weather, smoking and diseases or physical conditions that affect blood vessels and blood transport, as well as high vibration levels and long periods of exposure to vibration are mentioned as factors in the development of whitefinger disease. In order to reduce the risk of whitefinger disease and carpal tunnel syndrome, please note the following:
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Working safely with cut-off machines |
–STIHL cut-off machines are equipped with an anti-vibration ("AV") system designed to reduce the transmission of vibrations created by the machine to the operator's hands. An AV system is recommended for those persons using cut-off machines on a regular or sustained basis.
–Wear gloves and keep your hands warm.
–Keep the AV system well maintained. A cut-off machine with loose components or with damaged or worn AV elements will tend to have higher vibration levels.
–Maintain a firm grip at all times, but do not squeeze the handles with constant, excessive pressure. Take frequent breaks.
All the above-mentioned precautions do not guarantee that you will not sustain whitefinger disease or carpal tunnel syndrome. Therefore, continual and regular users should monitor closely the condition of their hands and fingers. If any of the above symptoms appear, seek medical advice immediately.
Warning!
The ignition system of your unit produces an electromagnetic field of a very low intensity. This field may interfere with some pacemakers. To reduce the risk of serious or fatal injury, persons with a pacemaker should consult their physician and the pacemaker manufacturer before operating this tool.
Proper Clothing
Warning!
To reduce the risk of injury, the operator should wear proper protective apparel.
Clothing must be sturdy and snug-fitting, but allow complete freedom of movement. Avoid loose-fitting jackets, scarfs, neckties, jewelry, flared or cuffed pants, unconfined long hair or anything that could become caught on any obstacles or moving parts of the unit. Wear overalls or long pants to protect your legs. Do not wear shorts.
Warning!
When cutting metal, a cut-off machine generates sparks that can ignite clothing. Most fabrics used in clothing are flammable – even flame-retardant fabrics will ignite at higher temperatures. To reduce the risk of burn injury STIHL recommends wearing clothing made of leather, wool, flame-retardant-treated cotton or a tightly woven, heavier cotton such as denim. Some flame-retardant synthetic fabrics are also suitable, but others such as polyester, nylon, rayon and acetate can melt during a fire into a tar-like matter that burns into the skin. Check the clothing manufacturer's instructions. Keep clothing free of oil, fuel, grease and other flammable substances.
English
Always wear gloves when handling the cut-off machine. Heavy-duty, nonslip gloves improve your grip and help to protect your hands.
Good footing is important in cut-off machine work. Wear sturdy boots with nonslip soles. Steel-toed safety boots are recommended.
Warning!
Loose objects may be thrown toward the operator by the cutting tool.
To reduce the risk of injury to your eyes never operate a cut-off machine unless wearing goggles
or properly fitted safety glasses with adequate top and side protection complying with
ANSI Z 87.1. Proper eye protection is a must.
Wear an approved safety hard hat to protect your head. Cut-off machine noise may damage your hearing. Always wear sound barriers (ear plugs or ear mufflers) to help protect your hearing. Regular users should have their hearing checked regularly.
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Warning!
When wet cutting at the recommended flow rate is not utilized, the oper-
ator should always wear a respirator approved by NIOSH / MSHA for
the material being cut to reduce the risk of serious or fatal respiratory illness. For additional details and warnings on this subject, see information under "Working Conditions" in this instruction manual.
THE POWER TOOL
For illustrations and definitions of the parts of the cut-off machine, see the chapter "Main Parts."
Warning!
Never modify a cut-off machine in any way. Only attachments supplied by STIHL or expressly approved by STIHL for use with the specific STIHL cut-off machine models are authorized. Although certain unauthorized attachments are useable with the STIHL powerhead, their use may, in fact, be extremely dangerous.
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Abrasive Wheels
Warning!
Before mounting the cutting wheel, make sure that the maximum operating wheel speed is above or equal to the spindle speed of your cut-off machine as provided in the specifications of this manual. A wheel that is not so rated may shatter or break and poses a threat of serious or fatal injury to the operator and other nearby persons.
Abrasive wheels for free-hand cutting are subjected to particularly high bending and compression stresses.
Warning!
Unauthorized wheels may be more likely to shatter or break. Use only STIHL wheels or other authorized wheels with approved RPM ratings. Read and follow any addional safety precautions that accompany the wheel.
Warning!
Inspect the abrasive wheel frequently and replace immediately if the abrasive wheel is cracked or warped.
Cracked or warped wheels may shatter or break and cause serious or fatal personal injury. Out-of- round or unbalanced abrasive wheels increase vibration and reduce the service life of the cut-off machine.
Unauthorized diamond abrasive wheels that utilize poor quality steel cores, that are not properly tensioned, or that have other design or manufacturing defects
may begin to wobble during use, which can cause wheel breakage. Such wobbling can also lead to a severe binding of the wheel in the kerf, that, under certain circumstances, can then result in serious or fatal injury from reactive forces. See the section entitled "Reactive Forces including Kickback." Never use a wheel that wobbles or that has ever wobbled. Even though such a wheel may temporarily cease to wobble, e.g., if run without load, it will always be prone to wobble again under certain conditions. Replace it immediately before further use.
Composite abrasive wheels are heat sensitive. Always store your cut-off machine in a place where a composite wheel is not exposed to direct sunlight or other sources of heat. Store spare composite wheels in a dry place where there is no risk of frost damage. Failure to follow these directions may cause the wheel to shatter or crack in use causing serious or fatal injury.
Warning!
Never use circular saw blades, carbide tipped blades, rescue blades, wood-cutting blades or
toothed blades of any nature. They can cause
severe personal injury from blade contact, thrown objects and / or reactive forces, including kickback. See section on "Reactive Forces." Your STIHL dealer stocks a range of special abrasive wheels for the many applications of the cut-off machine.
Working safely with cut-off machines
Warning!
Use of the wrong abrasive wheel or the cutting of material for which the wheel was not designed may cause the wheel to shatter causing serious or fatal injury.
Only use the abrasive wheel approved for the type of material to be cut. There are different types of abrasive wheels, each specially marked. With respect to composite wheels, for example:
1.Stone
Also can be used for concrete, masonry, reinforced concrete and brick cutting.
2.Steel
Can be used for all ferrous metal cutting.
3.Asphalt
Also can be used for aggregate concrete cutting.
4.Ductile iron
Also can be used for certain grades of cast iron (SG 17-24), bronze and copper cutting.
For cutting composite materials please ask your STIHL dealer.
Diamond Abrasive Wheels
Diamond abrasive wheels have a much better cutting performance than composite abrasive wheels. The diamond wheels are steel centered, and diamond particles are imbedded in their cutting edges.
They can be used for concrete, asphalt, natural stone, clay pipe, brick and the like.
They are not normally suitable for cutting metal or other materials.
Wet or dry cutting is possible. Water attachments are included with your STIHL cut-off machine. See the appropriate section of your instruction manual.
Warning!
Do not remount a used diamond abrasive wheel without first inspecting for under-cutting, flatness, core fatigue, segment damage or loss, signs of overheating (discoloration) and possible arbor hole damage. See the chapter "Diamond Cutting Wheels." Check the wheel for cracks and make sure that no pieces have broken off the wheel before use.
Always fit the wheel so that the arrow on the wheel points in the direction of the rotation of the spindle.
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THE USE OF THE POWER TOOL
Transporting the STIHL Cutquik
Warning!
To reduce the risk of injury from unintended activation and / or contact with a moving wheel, always stop the engine before putting a cut-off machine down or carrying it. The abrasive wheel continues to rotate (coast down) for a short while after the throttle trigger is released (flywheel effect). Bring the wheel to a stop by lightly contacting the bottom of the wheel with a hard surface or wait until the wheel comes to a complete stop on its own. Carrying a cut-off machine with the engine running is extremely dangerous. Accidental acceleration of the engine can cause the wheel to rotate. Avoid touching the hot muffler.
By hand: When carrying your cut-off machine by hand, the engine must be stopped and the cut-off machine must be in the proper position. Grip the front handle and place the muffler at the side away from the body.
Warning!
Always protect the cutting wheel from hitting the ground or any other objects. Damaged wheels may shatter and cause serious or fatal injury.
By vehicle: Properly secure your cut-off machine to prevent turnover, fuel spillage and damage to the cut-off machine. Never transport with cutting wheel mounted. A wheel damaged
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during transportation may shatter during operation and cause serious personal injury.
Fuel
Your STIHL power tool uses an oilgasoline mixture for fuel (see the chapter on "Fuel" of your instruction manual.)
Warning!
Gasoline is an extremely flammable fuel. If spilled and ignited by a spark or
other ignition source, it can cause fire and serious burn injury or
property damage. Use extreme caution when handling gasoline or fuel mix. Do not smoke or bring any fire or flame near the fuel or the power tool. Note that combustible fuel vapor may escape from the fuel system.
Warning!
Dust may collect on the powerhead, especially around the carburetor, and may absorb gasoline resulting in danger of fire. Clean dust from the powerhead regularly.
Fueling Instructions
Warning!
Fuel your power tool in well-ventilated areas, outdoors. Always shut off the engine and allow it to cool before refueling. Gasoline vapor pressure may build up inside the fuel tank depending on the fuel used, the weather conditions and the tank venting system.
In order to reduce the risk of burns and other personal injury from escaping gas vapor and fumes, remove the fuel filler cap on your power tool carefully so as to allow any pressure build-up in the tank to release slowly. Never remove the fuel filler cap while the engine is running.
Select bare ground for fueling and move at least 10 feet (3 m) from the fueling spot before starting the engine. Wipe off any spilled fuel before starting your machine.
Warning!
Check for fuel leakage while refueling and dur-
ing operation. If fuel leakage is found, do not start or run the engine until the leak is fixed and
any spilled fuel has been wiped away. Take care not to get fuel on your clothing. If this happens, change your clothing immediately.
Warning!
If fuel gets spilled on clothes, especially trousers, it is very important to change clothes immediately. Do not rely upon evaporation. Flammable quantities of fuel may remain on clothes after a spill for longer than expected. Cutting metal with a cut-off machine when clothes are wet or damp from gasoline is extremely dangerous, as the operator's clothes might catch fire and cause serious or fatal injury.
Warning!
An improperly tightened fuel cap can loosen or come off and spill quantities of fuel.
Different cut-off machines may be equipped with different fuel filler caps:
Bayonet Fuel Filler Cap
Never use a tool to open or close the bayonet fuel filler cap, as this could damage the cap and cause fuel to leak out.
The bayonet fuel filler cap must be closed with care after refuelling.
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Fuel Filler Cap with Screw Thread
Tighten the fuel filler cap as securely as possible 
after refuelling.
This reduces the risk of the cap working loose due to engine vibrations and fuel leaking out.
Warning!
Never attempt to force the cap open by using a tool. It may damage the cap and allow fuel to leak.
Before use, make sure that the fuel cap has been properly tightened and any spilled fuel wiped away. Check for fuel leakage while refueling and during operation. If a fuel leak is suspected, do not start or run the engine until the leak is fixed and spilled fuel has been wiped away.
Before Starting
For assembly, follow the procedure described in the appropriate section of your instruction manual.
Never operate a cut-off machine that is damaged, improperly adjusted or not completely and securely assembled. Check machine that it is ready for proper operation.
Keep the handles dry, clean and free of oil and fuel.
Warning!
Before operation of your cut-off machine, be sure the controls (e.g. throttle trigger, throttle trigger lockout, stop switch) and the safety devices are working properly, the carburetor idle and maximum speed are correctly adjusted, the wheel is properly mounted, and the wheel guard is in place and securely fastened to your unit. All wheels should be carefully inspected for good condition before mounting.
Adjust the wheel guard so that sparks, dust and cut material are deflected away from the operator, and cannot reach flammable surroundings. See section "Operating Instructions" of your instruction manual.
Warning!
Check that the spark plug boot is securely mounted on the spark plug – a loose boot may cause arcing that could ignite combustible fumes and cause a fire.
Proper tensioning of the ribbed V-belt is important. In order to avoid an incorrect setting, the tensioning procedure must be followed as described in your manual. Always make sure the hexagonal collar nuts for the cast arm are tightened securely.
Check ribbed belt tension after one hour of operation and correct if necessary.
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Starting
002BA058 KN
Warning!
Your cut-off machine is a one-person tool. Do not allow other persons to be near a running cut-off machine. Start and operate your cut-off machine without assistance. For specific starting instructions, see the appropriate section of your instruction manual.
Do not drop start. This method is very dangerous because you may lose control of the cut-off machine. Place the cut-off machine on firm ground or other solid surface in an open area. Maintain good balance and secure footing. Be absolutely sure that the cutting wheel is clear of you and all other obstructions and objects, including the ground. When the engine starts at starting-throttle, engine speed will be fast enough for the clutch to engage the belt pulley and turn
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