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Working safely with cut-off machines

English

6

Deflector

The adjusting range of the deflector is 
determined by a stop pin. Never attempt 
to push the deflector over the stop pin.

Set the deflector correctly for the cutting 
wheel: so that particles of material are 
guided away from the user and machine.

Note the direction in which the cut 
particles are ejected.

During work

In the event of impending danger or in 
an emergency, switch off the engine 
immediately by moving the slide control 
/ master control / stop switch to 

STOP

or

0

.

Check for correct idling, so that the 
cutting wheel is no longer driven when 
the throttle trigger is released and 
comes to a complete halt.

Check and/or correct the idle setting 
regularly.  Have the machine repaired by 
a STIHL servicing dealer if the cutting 
wheel continues to turn nevertheless.

Ensure that the working area is clear – 
watch out for obstacles, holes and pits.

Beware of 

slipping

 on ice, water, snow 

or uneven ground!

Never work on a ladder or on any other 
unsteady support.  Do not work above 
shoulder height and never operate the 
machine with one hand - 

risk of 

accidents!

Ensure you always have a firm and safe 
footing.

Do not work alone – keep within calling 
distance of others in case help is 
needed.

Never allow anyone in the working area 
and keep well away from other people to 
protect them from noise and flying 
objects.

More care and attention than usual are 
required when wearing ear protection, 
as sounds warning you of impending 
danger (shouts, beeps, etc.) cannot be 
heard properly.

If you get tired, take a break in good 
time.

Work calmly and methodically – only 
with good lighting and visibility. Take 
care not to endanger other people!

Ensure proper ventilation when working 
in trenches, hollows or other confined 
locations – 

risk of serious or fatal 

injury from breathing toxic fumes!

If you feel sick, if you have a headache, 
vision problems (e.g., your field of vision 
gets smaller), hearing problems, 
dizziness or inability to concentrate, stop 
work immediately.  Such symptoms may 
be caused by an excessively high 
concentration of exhaust emissions – 

risk of accident!

No smoking

 when working with or near 

the machine - 

risk of fire!

If the machine is subjected to unusually 
high loads for which it was not designed 
(e.g., heavy impact or a fall), always 
check that it is in good condition before 
continuing work - refer also to the 
section "Before starting". Check the fuel 
system for leaks and make sure the 
safety devices are working properly. 
Never use the machine if it is not in good 
condition. Consult a servicing dealer if in 
doubt.

Do not work in the starting throttle 
position, as the engine speed cannot be 
controlled in this position.

Never touch a rotating cutting wheel with 
your hand or any other part of the body.

Examine the workplace. Avoid all 
danger due to damaged piping or 
electrical wiring.

The machine must not be used near 
inflammable substances or gases.

Never use the machine to cut inside 
pipes, metal troughs or other containers 
unless you are absolutely sure that they 
do not contain any volatile or 
inflammable substances.

002BA223 KN

Your power tool produces 
toxic exhaust fumes as 
soon as the engine is 
running. These gases 
may be colorless and 
odorless and may contain 
unburnt hydrocarbons 
and benzene. Never run 
the engine indoors or in 
poorly ventilated areas, 
even if your model is 
equipped with a catalytic 
converter.

Summary of Contents for TS 420

Page 1: ... Working safely with cut off machines ...

Page 2: ......

Page 3: ... shows the TS 420 cut off machine as an example Other cut off machines may have different controls This brochure contains references to chapters in the Instruction Manuals for the specific machines Thus the Instruction Manual for the respective cut off machine and the information sheets enclosed with the cut off wheel must be observed If you still have questions after reading this brochure please ...

Page 4: ...recommends that you consult your doctor and the manufacturer of your pacemaker in order to avoid health hazards Anyone who has consumed alcohol medicines affecting their ability to react or drugs must not operate the machine Postpone the work if the weather is bad snow ice wind higher risk of accidents The machine may only be used for cutting It is not suitable for cutting wood or wooden objects A...

Page 5: ...utting wheel fitted it may break In vehicles Properly secure your machine to prevent turnover damage and fuel spillage Refueling Switch off the engine before refueling Never refuel the machine while the engine is still hot the fuel may spill over risk of fire Open the fuel filler cap carefully so that any excess pressure is relieved gradually and fuel does not splash out The machine may only be re...

Page 6: ... display any signs of core fatigue or overheating discoloration check also that there are no damaged or missing segments and that the spindle bore is not damaged Never use a chipped cracked or warped cutting wheel Substandard and or unapproved diamond cutting wheels can shimmy during cutting This shimmying can cause such diamond cutting wheels to be abruptly braked or become stuck in the cut Dange...

Page 7: ...if it is in good working order risk of accident Starting the engine Move at least 3 meters away from the place at which the machine was refueled and never start the machine in enclosed spaces The machine may only be used on level ground Ensure a firm and secure footing and hold the machine firmly The cutting wheel must not touch any objects or the ground and must not be in the cut The cutting whee...

Page 8: ...ethodically only with good lighting and visibility Take care not to endanger other people Ensure proper ventilation when working in trenches hollows or other confined locations risk of serious or fatal injury from breathing toxic fumes If you feel sick if you have a headache vision problems e g your field of vision gets smaller hearing problems dizziness or inability to concentrate stop work immed...

Page 9: ...ntact with a solid object Reduce the risk of kickback Work cautiously and methodically Hold the cut off machine firmly with both hands and maintain a secure grip Do not use the upper quarter of the cutting wheel for cutting The cutting wheel must be introduced into the cut with extreme care without twisting and without pushing Always be aware that the object to be cut may move and other factors ma...

Page 10: ...s are suitable for dry cutting or wet cutting only Work with water and wet cutting when using composite resin cutting wheels that are suitable only for wet cutting e g use STIHL water attachment Use dry cutting when using composite resin cutting wheels that are suitable only for dry cutting If composite resin cutting wheels of this type become wet their cutting performance is reduced and they beco...

Page 11: ...to ignition outside the cylinder move the slide control stop switch to STOP or 0 before turning the engine over on the starter with the spark plug boot removed or the spark plug unscrewed Do not service or store the machine near a naked flame risk of fire due to the fuel Check fuel cap regularly for tightness Use only spark plugs that are in perfect condition and have been approved by STIHL see Sp...

Page 12: ...k 10 l for binding dust water tank usable on the cut off machine cart for binding dust Observe with diamond and composite resin cutting wheels Object to be cut Must be fully supported Must be secured so it cannot roll or slip off Must be prevented from vibrating Severed parts With openings recesses etc the sequence of the cuts is important Always make the last cut so that the cutting wheel does no...

Page 13: ... feed with full cutting depth along the guide groove for small corrections of direction do not tilt the cutting wheel but always position it anew instead if necessary leave small ridges that hold the part that is to be separated in position Break these ridges later Shaping pipe N Mark a cutting line N Grind a guide groove along the marked cutting line do this by starting at the apex and cut outwar...

Page 14: ...esses during transport and storage Avoid jolting and impacts Stack cutting wheels flat on a level surface in the original packaging in a dry place where the temperature is as constant as possible Do not store cutting wheels in the vicinity of aggressive fluids Store cutting wheels in a frost free place The proper selection and use of composite resin cutting wheels ensures economical use and avoids...

Page 15: ...f application of the cutting wheel the numbers denote the performance class of the STIHL diamond cutting wheel Axial and radial run out A faultless spindle bearing of the cut off machine is necessary for a long service life and efficient functioning of the diamond cutting wheel Using the cutting wheel on a cut off machine with a faulty spindle bearing can lead to deviations in radial and axial run...

Page 16: ... is dull built up edges with cut ting wheels for stone Sharpen cutting wheels for stone by briefly cutting through abrasive materials replace cutting wheel for asphalt with a new one poor cutting performance high segment wear Cutting wheel is turning in the wrong direction Mount cutting wheel so that it turns in the right direction Breakdowns or tears in the parent wheel and segment Overloading us...

Page 17: ...dling e g excessive feed effort if excessively large cross sections are cut without pendulum cutting movement back and forth in the cutting plane Built up edges increase vibration reduce cutting performance and cause formation of sparks At the first signs of built up edges immediately sharpen the diamond cutting wheel to do this briefly cut through abrasive material such as sandstone aerated concr...

Page 18: ...ts Check operation X X Fuel pick up body in fuel tank test check X Replace X X X Fuel tank Clean X Ribbed V belt Clean retension X X Replace X X Air filter all filter components Replace Only if there is a noticeable loss of engine power Cooling air intake slits Clean X Cylinder fins Have them cleaned by a specialist dealer 1 X Spark arresting screen2 in muffler test check X Clean or replace X Wate...

Page 19: ...formation sticker Replace X 1 STIHL recommends STIHL servicing dealers 2 present only in some countries The following maintenance intervals apply in normal operating conditions The specified intervals must be shortened accordingly when working for longer than normal or under difficult cutting conditions extensive dust etc before starting work at the end of work and or daily Whenever tank is refill...

Page 20: ...ler cap 8 Water attachment 9 Tensioning nut 10 Adjusting lever 11 Cutting wheel 12 Front thrust washer 13 Deflector 14 Muffler 15 Spark arresting screen present only in some countries 16 Handlebar 17 Decompression valve 18 Cap for spark plug boot 19 Choke lever 20 Fuel pump 21 Filter cover Serial number Main Parts 7 6 3 2 5 8 10 9 11 4 1 19 15 16 13 20 21 17 18 14 370BA046 KN ...

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Page 24: ...www stihl com 04571860121 0457 186 0121 0457 186 0121 englisch G ...

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