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MS 461

English

Locking the chain

–

in an emergency

–

when starting

–

at idling speed

The chain brake is activated by pushing

the hand guard toward the bar nose with

your left hand – or by inertia in certain

kickback situations: The chain is

stopped and locked.

Releasing the chain brake

Pull the hand guard back toward the

front handle,

NOTICE

Always disengage chain brake before

accelerating the engine (except when

checking its operation) and before

starting cutting work.
High revs with the chain brake engaged

(chain locked) will quickly damage the

powerhead and chain drive (clutch,

chain brake).
The chain brake is also activated by the

inertia of the front hand guard if the

kickback force of the saw is high

enough: The hand guard is accelerated

toward the bar nose – even if your left

hand is not behind the hand guard, e.g.

during felling cut.

The chain brake will operate only if the

hand guard has not been modified in any

way.

Check operation of the chain brake

Before starting work: Run engine at idle

speed, engage the chain brake (push

hand guard toward bar nose) and open

the throttle wide for no more than

3 seconds – the chain must not rotate.

The hand guard must be free from dirt

and move freely.

Chain brake maintenance

The chain brake is subject to normal

wear. It is necessary to have it serviced

and maintained regularly by trained

personnel. STIHL recommends that you

have servicing and repair work carried

out exclusively by an authorized STIHL

servicing dealer. Maintain the following

servicing intervals:

Chain Brake

143BA011 KN

143BA012 KN

Full-time usage:

every 3

months

Part-time usage:

every 6

months

Occasional usage:

every 12

months

Содержание MS 461 Rescue

Страница 1: ...STIHL MS 461 Instruction Manual...

Страница 2: ......

Страница 3: ...Nikolas Stihl Guide to Using this Manual 2 Safety Precautions 3 Reactive Forces 8 Working Techniques 9 Cutting Attachment 18 Mounting the Bar and Chain 19 Tensioning the Chain 20 Checking Chain Tensio...

Страница 4: ...achine or its individual components Engineering improvements STIHL s philosophy is to continually improve all of its products For this reason we may modify the design engineering and appearance of our...

Страница 5: ...nufacturer before operating this power tool Intended use The machine may only be used to saw wood and wooden objects Do not use the machine for any other purpose risk of accidents Do not modify the ma...

Страница 6: ...s chains chain sprockets and accessories They are specifically designed to match your model and meet your performance requirements Refuelling Switch off the engine before refuelling Never refuel the m...

Страница 7: ...tart the engine start as described in the Instruction Manual During operation Ensure you always have a firm and safe footing Take special care when the bark is wet danger of slipping Always hold the c...

Страница 8: ...ed by a STIHL servicing dealer if the saw chain still continues to move during idling Ensure proper ventilation when working in trenches hollows or other confined locations risk of fatal injury from b...

Страница 9: ...e fuel Check fuel cap regularly for tightness Use only spark plugs that are in perfect condition and have been approved by STIHL see Specifications Check ignition lead insulation in good condition sec...

Страница 10: ...firmly with both hands and maintain a secure grip Always cut at full throttle Be aware of the location of the guide bar nose Do not cut with the guide bar nose Be especially careful with small tough l...

Страница 11: ...recognise the danger Use aids such as winches or draglines When felling close to roads rail lines power lines etc work with particular care If necessary notify police power companies or railway autho...

Страница 12: ...rmation on a possible fire risk If on a slope stand on the uphill side of the log Watch out for rolling logs When working at heights Always use a lift bucket Never work on a ladder or in a tree Never...

Страница 13: ...ck that there are no other persons in the felling area other than helpers Make sure no one is endangered by the falling tree the noise of your engine may drown any warning calls Maintain a distance of...

Страница 14: ...atch out for falling limbs and watch the top of the tree Preparing work area at base of tree First clear the tree base and work area from interfering limbs and brush to provide a secure footing Clean...

Страница 15: ...the planned direction of fall if necessary correct direction of fall by re cutting the felling notch Sapwood cuts Sapwood cuts in long fibered softwood help prevent sapwood splintering when the tree f...

Страница 16: ...e cut the sight helps keep the hinge horizontal i e the same thickness all round To do this hold the plunge cutting sight parallel to the chord of the felling notch Felling wedges Make use of wedges a...

Страница 17: ...lly at the same level as the felling cut B Large diameter trees Perform this felling cut when the tree diameter is greater than the length of the guide bar Shout a warning before starting the felling...

Страница 18: ...cut Felling Cut with Holding Strap Leaner A Small diameter trees Perform this felling cut when the tree diameter is smaller than the length of the guide bar N Plunge the guide bar into the trunk unti...

Страница 19: ...p 3 Do not cut into the holding strap Continue the felling cut on the other side of the trunk Make sure the second cut is at the same height as the first cut N Engage the spiked bumper behind the hing...

Страница 20: ...ard with a chain scabbard that matches the cutting attachment If guide bars of different lengths are mounted to the saw always use a chain scabbard of the correct length which covers the complete guid...

Страница 21: ...arp cutters N Fit the chain start at the bar nose N Fit the guide bar over the studs 1 the cutting edges on the top of the bar must point to the right N Engage the peg of the tensioner slide in the lo...

Страница 22: ...has been in use for some time N Check chain tension frequently see chapter on Operating Instructions Your engine requires a mixture of gasoline and engine oil WARNING For health reasons avoid direct s...

Страница 23: ...converter Mix Ratio STIHL 50 1 two stroke engine oil 50 parts gasoline to 1 part oil Examples N Use a canister approved for storing fuel Pour oil into canister first then add gasoline and mix thoroug...

Страница 24: ...ap Filling up with fuel Take care not to spill fuel while fueling and do not overfill the tank STIHL recommends you use the STIHL filler nozzle for fuel special accessory N Fill up with fuel Closing G...

Страница 25: ...BioPlus is recommended NOTICE Biological chain oil must be resistant to aging e g STIHL BioPlus since it will otherwise quickly turn to resin This results in hard deposits that are difficult to remov...

Страница 26: ...e option N Close the filler cap There must still be a small amount of oil in the oil tank when the fuel tank is empty If the oil tank is still partly full the reason may be a problem in the oil supply...

Страница 27: ...d guard is accelerated toward the bar nose even if your left hand is not behind the hand guard e g during felling cut The chain brake will operate only if the hand guard has not been modified in any w...

Страница 28: ...powdered or drifting snow In case of erratic idling behavior or poor acceleration N Turn the low speed screw L 1 4 turn counterclockwise Whenever the low speed screw L has been adjusted it is usually...

Страница 29: ...and squeeze the throttle trigger at the same time To select warm start n move the Master Control lever to cold start l first then push it into the warm start position n The change to warm start n is...

Страница 30: ...legs just above the knees N Hold the front handle firmly with your left hand your thumb should be under the handle Cranking N Pull the starter grip slowly with your right hand until you feel it engag...

Страница 31: ...ter Control lever to Choke shutter closed l if the engine is cold also use this position if the engine stopped when you opened the throttle after starting Starting throttle position n if the engine is...

Страница 32: ...n chamber N Install the spark plug see Spark Plug N Set Master Control lever to n even if the engine is cold N Now start the engine During the break in period A factory new machine should not be run a...

Страница 33: ...m thermal overload After finishing work N Slacken off the chain if you have retensioned it at operating temperature during work NOTICE Always slacken off the chain again after finishing work The chain...

Страница 34: ...hain is changed to avoid uneven wear especially at the sprocket nose and on the bottom N Periodically clean the oil inlet hole 1 oil outlet channel 2 and bar groove 3 N Measure groove depth using the...

Страница 35: ...extra ordinary conditions e g extremely wintry conditions of use such as powder snow or drift snow Rather unsuitable in very dusty conditions When dry STIHL filters attain a long service life N Always...

Страница 36: ...peed It is therefore not possible to increase the maximum speed by further turning the high speed screw H in the clockwise direction making the mix leaner Standard setting N Switch off the engine N Ch...

Страница 37: ...standard setting N Let the engine warm up N Turn the high speed adjusting screw H slightly clockwise leaner max up to the stop NOTICE After descending from a high altitude restore the carburetor setti...

Страница 38: ...plug N Check electrode gap A and readjust if necessary see Specifications N Rectify the problems which have caused fouling of the spark plug Possible causes are Too much oil in fuel mix Dirty air filt...

Страница 39: ...cket after use of two saw chains or earlier if the wear marks arrows are deeper than 0 5 mm otherwise the service life of the saw chain is reduced use check gauge special accessory to test Using two s...

Страница 40: ...hain components and adapt these parts to the remaining parts in terms of shape and level of wear rework accordingly Carbide tipped Duro saw chains are especially wear resistant For an optimal sharpeni...

Страница 41: ...TIHL filing gauge special accessory see table Sharpening tools a universal tool for checking sharpening and side plate angles depth gauge setting and tooth length as well as cleaning grooves and oil i...

Страница 42: ...tance can be increased by up to 0 2 mm 0 008 Lowering the depth gauges The depth gauge setting is lowered when the cutter is sharpened N Check the depth gauge setting after each sharpening N Lay the a...

Страница 43: ...uge Taper square file Sharpening set1 Inches mm mm Inches Part number Part number Part number Part number Part number 1 4P 6 35 3 2 1 8 5605 771 3206 5605 750 4300 0000 893 4005 0814 252 3356 5605 007...

Страница 44: ...damaged as required Complete machine Visual inspection condition leaks X X Clean X Throttle trigger trigger lockout choke lever stop switch Master Control lever depending on version Check operation X...

Страница 45: ...peration then every 150 hours of operation X Safety labels Replace X 1 STIHL recommends a STIHL servicing dealer 2 Firmly tighten down the cylinder base screws of professional saws 3 4 kW or more afte...

Страница 46: ...STIHL recommends that you have servicing and repair work carried out exclusively by an authorized STIHL servicing dealer STIHL dealers are regularly given the opportunity to attend training courses a...

Страница 47: ...catcher 9 Chain tensioner 10 Bumper spike 11 Guide bar 12 Oilomatic saw chain 13 Oil filler cap 14 Muffler 15 Front hand guard 16 Front handle handlebar 17 Decompression valve 18 Starter grip 19 Fuel...

Страница 48: ...ersonal protective equipment Noise and Vibration Data For further details on compliance with Vibration Directive 2002 44 EC see www stihl com vib Sound pressure level Lpeq to ISO 22868 Specifications...

Страница 49: ...is machine may only carry out the maintenance and service work described in this user manual All other repairs must be carried out by a servicing dealer STIHL recommends that you have servicing and re...

Страница 50: ...N ISO 11681 1 EN 55012 EN 61000 6 1 The measured and guaranteed sound power levels were determined according to Directive 2000 14 EC Annex V using the ISO 9207 standard Measured sound power level Guar...

Страница 51: ......

Страница 52: ...www stihl com 04587730121A 0458 773 0121 A 0458 773 0121 A englisch G...

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