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11 Checking the Spark Plug

► If the engine is down on power, difficult to start

or runs poorly at idle speed, first check the

spark plug.

► Fit a new spark plug after about 100 operating

hours – or sooner if the electrodes are badly

eroded. Install only suppressed spark plugs of

the type approved by STIHL – see "Specifica‐

tions".

11.1

Removing the Spark Plug

► Stopping the Engine

0008BA017 KN

► Carefully pry open the flap (1) with a suitable

tool (e.g. combination wrench).

0008BA018 KN

► Remove the spark plug boot (2) using a suita‐

ble tool (e.g. combination wrench).

► Unscrew the spark plug.

11.2

Checking the Spark Plug

000BA039 KN

► Clean dirty spark plug.

► Check electrode gap (A) and readjust if neces‐

sary – see "Specifications".

► Rectify the problems which have caused foul‐

ing of the spark plug.

Possible causes are:

–

Too much oil in fuel mix.

–

Dirty air filter.

–

Unfavorable running conditions.

000BA045 KN

WARNING

Arcing may occur if the adapter nut (1) is loose

or missing. Working in an easily combustible or

explosive atmosphere may cause a fire or an

explosion. This can result result in serious inju‐

ries or damage to property.
► Use resistor type spark plugs with a properly

tightened adapter nut.

11.3

Installing the Spark Plug

► Insert and screw home the spark plug by

hand.

► Tighten down the spark plug.

► Press the spark plug boot firmly onto the spark

plug.

0008BA019 KN

► Close the flap (1), top first, then the bottom,

tabs (arrows) must snap into position.

11 Checking the Spark Plug

English

0458-447-8321-D

Содержание HS 56

Страница 1: ...HS 46 56 2 21 Instruction Manual ...

Страница 2: ...arance of our products periodically Therefore some changes modifications and improvements may not be covered in this man ual 2 Safety Precautions and Working Techniques Special safety precautions must be observed when working with this power tool because it has very sharp high speed cutting blades It is important you read and under stand the User Manual before com missioning and keep it in a safe ...

Страница 3: ...HL tools and accessories They are specifically designed to match the product and meet your performance requirements Never attempt to modify your power tool in any way since this may increase the risk of personal injury STIHL excludes all liability for personal injury and damage to property caused while using unauthorized attachments Do not use a high pressure washer to clean the power tool The sol...

Страница 4: ...m the l and n positions to the operating position F while the Throttle Trigger Lockout and Throttle Trigger are simultaneously squeezed Check that the spark plug boot is secure a loose boot may cause sparking that could ignite combustible fumes and cause a fire Cutting blades must be properly tightened and in safe operating condition clean sharp not bent or warped correctly mounted and thor oughly...

Страница 5: ...roots risk of tripping or stumbling Make sure you always have good balance and secure footing 2 7 1 When working at heights Always use a lift bucket Never use the machine while standing on a ladder or in a tree Never work on an insecure support Never use the machine with just one hand Be particularly alert and cautious when wearing hearing protection because your ability to hear warnings shouts al...

Страница 6: ...sap and the build up of dirt particles The dust which is generated during operation may be harmful to health Wear a dust mask in case of dust formation Before you leave the machine Shut the engine off Check the cutting blades at regular short inter vals during operation or immediately if there is a noticeable change in cutting behavior Shut off the engine Wait for cutting blades to come to a stand...

Страница 7: ... good condition see Specifications Inspect the ignition lead insulation in good con dition secure connection Check the condition of the muffler To reduce the risk of fire and damage to hearing do not operate your machine if the muffler is damaged or missing Do not touch a hot muffler since burn injury will result Vibration behavior is influenced by the condition of the AV elements check the AV ele...

Страница 8: ...specification can lead to severe engine damage The engine seals fuel lines and fuel tank may be damaged if low quality gasoline or engine oil is used 4 2 1 Gasoline Use only high quality gasoline with an octane rat ing of at least 90 ROC leaded or unleaded Gasoline with an alcohol component exceeding 10 can cause impaired engine performance in engines with manually adjustable carburetors and thus ...

Страница 9: ...res STIHL MotoMix however can be stored for up to 5 years without any problems Shake the canister containing the fuel mixture thoroughly before refueling WARNING Pressure may have built up in the canister open it carefully The fuel tank and the canister in which fuel mixture is stored should be cleaned thoroughly from time to time Residual fuel and the liquid used for cleaning must be disposed of ...

Страница 10: ...uel special accessory Fill the fuel tank 5 4 Closing 001BA234 KN Grip must be vertical Fit the cap marks on tank cap and fuel tank must line up Press the cap down as far as stop 001BA233 KN While holding the cap depressed turn it clock wise until it engages in position 001BA231 KN The marks on the tank cap and fuel tank are then in alignment 001BA235 KN Fold the grip down 001BA241 KN Tank cap is l...

Страница 11: ... Lever 0 0008BA007 KN STOP STOP or Master Control lever must be pushed in direction of STOP or to switch off the ignition When released the Master Control lever springs back to the normal run position F and the ignition is switched on again Normal run position F engine runs or can fire Starting throttle n this position is used to start a warm engine The Master Control lever moves to the normal run...

Страница 12: ...throttle trigger lockout 1 throttle trigger 2 and Master Control lever 6 3 2 Warm engine warm start 3 0008BA010 KN 1 2 Depress the throttle trigger lockout 1 and the throttle trigger 2 at the same time hold both levers in that position Move the Master Control lever 3 to n Release the throttle trigger lockout 1 throttle trigger 2 and Master Control lever Also use this setting if the engine has been...

Страница 13: ...ug boot is properly con nected Repeat the starting procedure 6 7 4 Fuel tank run until completely dry After refueling press the manual fuel pump bulb at least five times even if the bulb is fil led with fuel Set the Master Control lever to suit the engine temperature Start the engine 7 Operating Instructions 7 1 During break in period A factory new machine should not be run at high revs full throt...

Страница 14: ...ng blades stop moving then turn it about another full turn in the same direction WARNING If the cutting blades continue to run while the engine is idling have your power tool checked and repaired by your servicing dealer 10 Spark Arresting Screen in Muffler WARNUNG To reduce the risk of fire caused by hot particles escaping from the machine never operate the machine without a spark arresting scree...

Страница 15: ...Check electrode gap A and readjust if neces sary see Specifications Rectify the problems which have caused foul ing of the spark plug Possible causes are Too much oil in fuel mix Dirty air filter Unfavorable running conditions 1 000BA045 KN WARNING Arcing may occur if the adapter nut 1 is loose or missing Working in an easily combustible or explosive atmosphere may cause a fire or an explosion Thi...

Страница 16: ... 3 1 1 1 Fit the retaining plate 2 so that it is flush with the gearbox housing Fit the gearbox cover 3 insert the screws 1 and tighten them down firmly 12 1 2 HS 56 Use STIHL gear lubricant for hedge trimmers special accessory to lubricate the blade drive gear 0000 GXX 3952 A0 1 2 Unscrew the filler plug 1 If no grease can be seen on the inside of the filler plug screw the tube 2 of STIHL gear lu...

Страница 17: ...rds the cutting edge The file only sharpens on the forward stroke lift it off the blade on the backstroke Use a whetstone to remove burr from cutting edge Remove as little material as possible After sharpening clean away filing or grinding dust and then spray the cutting blades with STIHL resin solvent NOTICE Do not operate your machine with dull or dam aged cutting blades This may cause overload ...

Страница 18: ...let Visual inspection X Clean X Spark arresting screen in muffler Check if installed X Check or replace1 X All accessible screws and nuts not adjusting screws Retighten X Antivibration elements Visual inspection X Have replaced by serv icing dealer1 X X Cutting blades Clean X Sharpen1 X Visual inspection X Have replaced by serv icing dealer1 X Gearbox lubrication commercial use only check every 25...

Страница 19: ...50 rpm Cut off speed 9 300 rpm 17 2 Ignition System Electronic magneto ignition Spark plug resistor type NGK CMR6H BOSCH USR4AC Electrode gap 0 5 mm 17 3 Fuel system All position diaphragm carburetor with integral fuel pump Fuel tank capacity 280 cc 0 28 l 17 4 Cutting blades 17 4 1 HS 46 Bidirectional ground on one side Sharpening angle to horizontal 35 Tooth spacing 30 mm Stroke rate 3 600 min C...

Страница 20: ...engine in accordance with a standardized test procedure under laboratory conditions and does not represent either an explicit or implied guarantee of the performance of a specific engine The applicable exhaust emission requirements are fulfilled by the intended usage and mainte nance described in this User Manual The oper ating license shall be void if the engine is modi fied in any way 18 Mainten...

Страница 21: ...00 14 EC and has been developed and manu factured in compliance with the following stand ards in the versions valid on the date of produc tion EN ISO 10517 EN 55012 EN 61000 6 1 The measured and the guaranteed sound power level have been determined in accordance with Directive 2000 14 EC Annex V and standard ISO 11094 Measured sound power level 105 dB A Guaranteed sound power level 107 dB A Techni...

Страница 22: ...English 20 EC Declaration of Conformity 22 0458 447 8321 D ...

Страница 23: ...20 EC Declaration of Conformity English 0458 447 8321 D 23 ...

Страница 24: ...www stihl com 04584478321D 04584478321D 0458 447 8321 D 0458 447 8321 D ...

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