STIHL HS 45
Contents
1. Poor quality gasoline or engine oil may damage the engine sealing rings hoses and the fuel tank HS 45 Gasoline Use only high quality brand name gasoline with a minimum octane rating of 90 leaded or unleaded If your machine is equipped with a catalytic converter you must use unleaded gasoline x few tankfuls of leaded gasoline will greatly reduce the efficiency of the catalytic converter Engine Oil Use only quality two stroke engine oil We recommend STIHL two stroke engine oil since it is specially formulated for use in STIHL engines and guarantees a long engine life If STIHL two stroke engine oil is not available use only quality two stroke oil designed for use in air cooled engines Do not use oils designed for water cooled engines or engines with a separate lubricating system e g conventional four stroke engines Use only STIHL 50 1 two stroke engine oil for the fuel mix in models with a catalytic converter HS 45 Mix Ratio STIHL 50 1 two stroke engine oil 50 parts gasoline to 1 part oil Other high quality two stroke engine oils 25 parts gasoline to 1 part oil Examples Gaso STIHL Other high line engine oil quality two 50 1 stroke engine oils 25 1 Liters Liters cc Liters cc 1 002 20 0 04 40 5 0 10 100 0 20 200 10 0 20 200 0 40 400 15 0 30 300 0 60 600 20 0 40 400 0 80 800 25 0 50 500 1 00 1000 e Use a canister approved for storin2. look for cracks Check sharpness To reduce the risk of fire always clean plant residue chips leaves and excess lubricant off the engine and muffler After Finishing Work Always clean dust and dirt off the machine do not use any grease solvents for this purpose Spray the blades with STIHL resin solvent Start and run the engine briefly so that the solvent is evenly distributed Vibrations Prolonged use of the unit may result in vibration induced circulation problems in the hands whitefinger disease No general recommendation can be given for the length of usage because it depends on several factors The period of usage is prolonged by Hand protection wearing warm gloves breaks The period of usage is shortened by Any personal tendency to suffer from poor circulation symptoms frequently cold fingers itching Low outside temperatures Gripping force a tight grip hinders circulation Continual and regular users should monitor closely the condition of their hands and fingers If any of the above symptoms appear seek medical advice HS 45 Maintenance and repairs The machine must be serviced regularly Do not attempt any maintenance or repair work not described in your Owner s Manual All other work should be carried out by a servicing dealer STIHL recommends that maintenance and repair work be carried out only by authorized STIHL dealers STIHL dealers
3. a STIHL servicing dealer 20 HS 45 Minimize Wear and Avoid Damage Observing the instructions in this manual helps reduce the risk of unnecessary wear and damage to the power tool The power tool must be operated maintained and stored with the due care and attention described in this owner s manual The user is responsible for all damage caused by non observance of the safety precautions operating and maintenance instructions in this manual This includes in particular Alterations or modifications to the product not approved by STIHL Using tools or accessories which are neither approved or suitable for the product or are of a poor quality Using the product for purposes for which it was not designed Using the product for sports or competitive events Consequential damage caused by continuing to use the product with defective components HS 45 Maintenance Work All the operations described in the Maintenance Chart must be performed on a regular basis If these maintenance operations cannot be performed by the owner they should be performed by a servicing dealer STIHL recommends that you have maintenance and repair work carried out only by an authorized STIHL servicing dealer STIHL servicing dealers are able to attend regular training courses and receive technical information bulletins on the latest engineering changes If these operations are not carried out as specif
4. e Turn the high speed screw H clockwise leaner no further than stop At sea level e Turn the high speed screw H counterclockwise richer no further than stop 16 Checking the Spark Plug z x a Q O lt a Q Q oO If engine is down on power difficult to start or runs poorly at idle speed first check the spark plug Remove the spark plug see Starting Stopping the Engine e Clean dirty spark plug Check electrode gap A and readjust if necessary see Specifications e Rectify the problems which have caused fouling of spark plug To much oil in fuel mix Dirty air filter Unfavorable running conditions e Fit anew 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 Specifications To reduce the risk of arcing and fire z x re lt ao Ifthe spark plug comes with a detachable adapter nut 1 screw it on firmly HS 45 ra x o irs gt lt a On all spark plugs e Always press the boot 2 firmly on to the spark plug 3 HS 45 Engine Running Behavior If engine running behavior is unsatisfactory even though the air filter is clean and the carburetor properly adjusted the cause may be in the muffler Have the muffler checked for contamination coking S
5. injury avoid contact with the cutting blades Do not drop start the power tool The correct starting procedure is described in your instruction manual Note that the cutting blades continue to run for a short period after you let go of the throttle trigger flywheel effect Check the idle speed setting The cutting blades must not move when the engine is idling with the throttle trigger released Holding and Controlling the Machine Always hold the unit firmly with both hands on the handles Wrap your fingers and thumbs around the handles Make sure you always have good balance and secure footing Right handers 442BA000 KN Right hand on the control handle and left handle on the front handle Left handers zZ x N lt je N x Left hand on the control handle and right hand on the front handle During Operation In the event of imminent danger or in an emergency switch off the engine immediately move the slide control stop switch to 0 or STOP Check that there are no bystanders in the general work area Observe the cutting blades at all times do not cut any areas of the hedge that you cannot see When cutting the top of a taller hedge check the other side of the hedge frequently for bystanders animals and obstructions Make sure the idle speed setting is correct The cutting blades must not run when the engine is idling with the throttle trigger released
6. the tank changed once every year Stop switch 2 tol e Press down the throttle trigger interlock lever 3 squeeze the throttle trigger 4 and hold in that position e Press in the starting throttle lock 5 Release the throttle trigger interlock lever and starting throttle lock this is the starting throttle position 12 253BA004 KN Set the choke lever 6 For cold start to Fer For warm start to Press fuel pump bulb 7 at least five times Place the machine on the ground Remove the blade scabbard Make sure that cutting blades are not touching the ground or any other obstacles Make sure you have a firm footing Hold the machine firmly on the ground with your left hand on the front handle and press down HS 45 e Pull the starter grip slowly with your right hand until you feel it engage and then give it a brisk strong pull Do not pull out the starter rope all the way it might otherwise break e Donotletthe starter grip snap back Guide it slowly back into the housing so that it can rewind properly If the engine is cold choke position e Pull the starter rope five times Move the choke lever 6 to e Continue cranking until engine runs Note If the engine does not start after 10 pulls with the choke lever setto Set choke to pull the starter rope five times move choke to and continue cranking If eng
7. times even when bulb is filled with fuel e Now start the engine 14 Cleaning the Air Filter Dirty air filters reduce engine power increase fuel consumption and make starting more difficult If there is a noticeable loss of engine power Move the choke lever to 4 Press down the tab 1 and swing the filter cover 2 open 253BA008 KN Clean away loose dirt from around the filter Zz x for i lt a oO wo N Remove the foam element 3 and the felt element 4 Wash the foam element in a clean non flammable solution e g warm soapy water and then dry Install a new felt filter element Asa temporary measure you can knock it out on the palm of you hand or blow it out with compressed air do not wash Replace any damaged parts Fit foam element 3 in the filter cover 2 and felt element 4 in the filter housing 5 Close the filter cover so that it snaps into position HS 45 Adjusting the Carburetor General Information 253BA000 KN The carburetor comes from the factory with a standard setting This setting provides an optimum fuel air mixture under most operating conditions With this carburetor it is only possible to adjust the high speed screw within fine limits HS 45 Standard Setting e Shut off the engine Inspect cutting blades and clean if necessary clean move freely not warped Check the air fil
8. Check and correct the idle speed setting at regular intervals If the cutting blades still run have your dealer check your machine and make proper adjustments or repairs HS 45 Note that the cutting blades continue to run for a short period after you let go of the throttle trigger flywheel effect Take special care in slippery conditions damp snow ice on slopes uneven ground etc Clear away fallen branches scrub and cuttings Watch out for obstacles such as tree stumps and roots which could cause you to trip or stumble Make sure you always have firm and secure footing When working at a height that exceeds the unit s reach Use a lift bucket Never work on a ladder Never work on an insecure support Never operate your unit with one hand Be particularly alert and cautious when wearing hearing protection because your ability to hear warnings shouts alarms etc is restricted To reduce the risk of accidents take a break in good time to avoid tiredness or exhaustion HS 45 Work calmly and carefully in daylight conditions and only when visibility is good Stay alert at all times so as not to endanger others Your power tool produces toxic exhaust fumes as soon as the engine is running These fumes may be colorless and odorless Never run the engine indoors or in poorly ventilated locations even if your model is equipped with a catalytic converter To reduce th
9. STIHL STIHL HS 45 Instruction Manual BA_SE_040_002_01_10 fm Printed on chlorine free paper ANDREAS STIHL AG amp Co KG 2006 Printing inks contain vegetable oils paper can be recycled 0458 253 0121 M7 E6 Fi Printed in Germany Contents Guide to Using this Manual 2 Safety Precautions and Working Techniques 3 Using the Unit csee 9 F el nalen 10 Fueling iarrar eee 12 Starting Stopping the Engine 12 Cleaning the Air Filter 14 Adjusting the Carburetor 15 Checking the Spark Plug 16 Engine Running Behavior 17 Lubricating the Gearbox 17 Rewind Starter icce 18 Storing the Machine 18 Sharpening Instructions 18 Inspections and Maintenance by Dealef tvs eke ee 19 Maintenance Chart 20 Minimize Wear and Avoid Damage ne 21 Parts and Controls 22 Specifications o 23 Special Accessories cece 23 Maintenance and Repairs 24 Certificate of Conformity 24 STIHL HS 45 English Dear Customer Thank you for choosing a quality engineered STIHL product This machine has been built using modern production techniques and comprehensive quality assurance Every effort has been made to ensure your Satisfaction and troublefree use of the machine Please contact yo
10. Single cylinder two stroke engine Displacement Bore Stroke Engine power to ISO 8893 Idle speed Fuel System Carburetor Fuel tank capacity Fuel mix Ignition System Type Spark plug suppressed Electrode gap 27 2 cm 34 mm 30 mm 0 75 kW 1 HP 2 800 rpm All position diaphragm carburetor with integral fuel pump 0 225 225 cm See Fuel Electronic magneto ignition Bosch WSR 6 F or NGK BPMR7A 0 5 mm Cutting blade sharpening angle 35 to horizontal HS 45 Noise and Vibration Data Measurement of noise and vibration data includes idling and rated maximum RPM in a ratio of 1 4 Sound pressure level Lpeq to ISO 6081 HS 45 450 98 dB A HS 45 600 98 dB A Sound power level Lweq to ISO 3744 HS 45 450 104 dB A HS 45 600 104 dB A Vibration measurement apy eq to ISO 8662 Handle left HS 45 450 6 1 m s HS 45 600 5 6 m s Handle right HS 45 450 10 0 m s HS 45 600 9 7 mis For further details concerning compliance with the employers Directive on vibrations 2002 44 EEC see www stihl com vib Weight HS 45 450 4 6 kg HS 45 600 4 9 kg Blade length in mm English Special Accessories STIHL resin solvent for cleaning cutting blades STIHL gear lubricant 80 g tube 225 g tube Contact your STIHL dealer for the latest information on these and other special accessories 23 English Maintenance and Repairs Users of
11. TIHL recommends that all maintenance and repair work be carried out by an authorized STIHL dealer English Lubricating the Gearbox 253BA012 KN Lubricate the blade drive gear with STIHL gear lubricant for hedge trimmers After about 50 hours of operation Remove the screw plug 1 from the gearbox Screw the tube of grease 2 into the filler hole Squeeze up to 5 g 1 4 oz grease into the gearbox Do not completely fill the gearbox with grease Refit the filler plug and tighten it down firmly 17 English Rewind Starter To help prolong the wear life of the starter rope observe the following points e Pull the starter rope only in the direction specified e Donotpull the rope over the edge of the guide bushing e Do not pull out the rope more than specified since it might break e Donotlet the starter grip snap back guide it slowly into the housing See also chapter Starting Stopping the Engine Replace a damaged starter rope in good time or have it replaced by your STIHL dealer 18 Storing the Machine For periods of about 3 months or longer e Drain and clean the fuel tank in a well ventilated area e Dispose of fuel properly in accordance with local environmental requirements e Run engine until carburetor is dry this helps prevent carburetor diaphragms sticking together e Clean the cutting blades check condition and spray wit
12. als should not be allowed in the area where a power tool is in use When the machine is not in use work break shut it off so that it does not endanger others and secure it against unauthorized use The power tool user is responsible for avoiding injury to third parties or damage to their property Do not lend or rent your power tool without the instruction manual Be sure that anyone using your power tool understands the information contained in this manual To operate the power tool you must be rested in good physical condition and mental health If you have any condition that might be aggravated by strenuous work check with your doctor before operating a power tool English Persons with pacemakers only The ignition system of your unit produces an electromagnetic field of a very low intensity This field may interfere with some pacemakers To reduce health risks STIHL recommends that persons with pacemaker consult their physician and the pacemaker manufacturer before operating this tool Do not operate the power tool if you are under the influence of any substance drugs alcohol which might impair vision dexterity or judgment Use your power tool only for cutting hedges shrubs scrub bushes and similar material It must not be used for any other purpose since this may result in accidents or damage to the machine Never attempt to modify your power tool in any way since this can be extremely dangerous
13. and also result in accidents or damage to the machine English Only mount cutting blades and accessories that are explicitly approved for this power tool model by STIHL or are technically identical If you have any questions in this respect consult a servicing dealer To reduce the risk of accidents or damage to the machine use only high quality tools and replacement parts STIHL recommends the use of STIHL original tools and accessories The characteristics of these components are specifically designed to match your machine and meet your performance requirements Clothing and Equipment Wear proper protective clothing and equipment Clothing must be sturdy but allow complete freedom of movement Wear snug fitting clothing e g an overall and jacket combination do not wear a work coat Avoid loose fitting jackets scarves neckties jewellery or anything that could get caught on moving parts of the machine Tie up and confine long hair e g with a hair net cap hard hat etc Wear sturdy footwear with non slip soles gt Wear safety glasses Wear hearing protection e g earplugs or ear muffs Wear heavy duty gloves preferably made of leather STIHL offers a comprehensive range of safety clothing and equipment Transporting the Machine Always turn off the engine and always fit the blade scabbard over the cutting blades even when you carry the machine for short distances Carry t
14. bjects When working close to the ground make sure that no sand grit or stones get between the blades Take particular care when cutting hedges next to or against wire fences Do not touch wire with the cutting blades To avoid the risk of electrocution do not touch electric power lines never cut through electric power lines Do not touch the cutting blades while the engine is running If the cutting blades become jammed by thick branches or other obstructions switch off the engine immediately before attempting to free the blades Opening the throttle while the blades are blocked increases the load and reduces engine speed The clutch then slips continuously and this causes overheating and damage to important components e g clutch polymer housing components and this can increase the risk of injury from the blades moving while the engine is idling If the hedge is very dusty or dirty spray the blades with STIHL resin solvent from time to time during cutting This helps reduce blade friction as well as the aggressive effects of sap and the build up of dirt particles Always shut off the engine before leaving the unit unattended Check the cutting blades at regular short intervals during operation or immediately if there is a noticeable change in cutting bahvior Shut off the engine Wait until the cutting blades have come to a complete standstill Check condition and tightness
15. e risk of serious of fatal injury from breathing toxic fumes ensure proper ventilation when working in trenches hollows or other confined locations Operate your power tool so that it produces a minimum of noise and emissions do not run engine unnecessarily accelerate the engine only for cutting To reduce risk of fire do not smoke while operating or standing near your power tool Note that combustible fuel vapor may escape from the fuel system English The dust vapor and smoke created during operation may be damaging to health Wear a suitable respirator in very dusty or smoky conditions The gearbox becomes hot during operation To reduce the risk of burn injury do not touch the gear housing If your power tool 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 see also Before Starting Check in particular that the fuel system is tight no leaks and the safety devices are working properly Do not continue operating your power tool if it is damaged In case of doubt have the machine checked by your servicing dealer Do not operate your power tool with the starting throttle lock engaged as you do not have control of the engine speed in this position English Inspect hedge and work area to avoid damaging the cutting blades Remove stones rocks pieces of metal and other solid o
16. g fuel Pour oil into the canister first then add gasoline and mix thoroughly English Storing Fuel Store fuel only in approved safety type fuel canisters in a dry cool and safe location protected from light and the sun Fuel mix ages Only mix sufficient fuel for a few weeks work Do not store fuel mix for longer than 3 months Exposure to light the sun low or high temperatures can quickly make the fuel mix unusable Thoroughly shake the mixture in the canister before fueling your machine Pressure may build up in the canister open it carefully Clean the fuel tank and canister from time to time N Dispose of remaining fuel and cleaning fluid properly in accordance with local regulations and environment requirements 11 English Fueling Starting Stopping the Engine 253BA002 KN e Before fueling clean the filler cap and the area around it to ensure that no dirt falls into the tank Observe safety precautions Start as follows Move the blade lock lever 1 forwards against stop in direction of front handle e Position the unit so that the filler cap is facing up Take care not to spill fuel while fueling and do not overfill the tank STIHL recommends use of the STIHL filling system special accessory Important After fueling tighten down the filler cap by hand as securely as possible Zz x oO oO So lt a an wo N Have the fuel pickup body in
17. g the Unit Cutting season Observe all country specific and local regulations and ordinances regarding hedge trimming Do not use your hedge trimmer during other people s rest periods Cutting sequence Use lopping shears or a chainsaw to cut out thick branches first Cut both sides of the hedge first then the top English Cutting techniques 442BA013 KN Vertical cut Swing the cutting blade from the bottom upwards in an arc lower the nose of the blade move along the hedge and then swing the blade up again in an arc 10 N A y WG 442BA014 KN Horizontal cut Hold the cutting blade at an angle of 0 to 10 as you swing the hedge trimmer horizontally Swing the blade in an arc towards the outside of the hedge so that the cuttings fall to the ground Fuel Your engine requires a mixture of gasoline and engine oil For health reasons avoid direct skin contact with gasoline and avoid inhaling gasoline vapor STIHL MotoMix STIHL recommends the use of STIHL MotoMix This ready to use fuel mix contains no benzol or lead has a high octane rating and ensures that you always use the right mix ratio STIHL MotoMix is specially formulated for use in STIHL engines and guarantees a long engine life MotoMix is not available in all markets Mixing Fuel fo Unsuitable fuels or lubricants or mix ratios other than those specified may result in serious damage to the engine
18. h STIHL resin solvent e Fit the blade scabbard Thoroughly clean the machine pay special attention to the cylinder fins and air filter Store the machine in a dry high or locked location out of the reach of children and other unauthorized persons Sharpening Instructions The blades must be resharpened if cutting performance and behavior begin to deteriorate i e if blades frequently snag on branches It is best to have the cutting blades resharpened by a specialist on a workshop sharpener STIHL recommends you have this work performed by a STIHL servicing dealer It is also possible to use a flat crosscut sharpening file See Specifications for prescribed sharpening angle e Always file towards 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 e After sharpening clean filing or grinding dust off the cutting blades and lubricate with grease Do not operate your machine with dull or damaged cutting blades This may cause overload and will give unsatisfactory cutting results HS 45 Inspections and Maintenance by Dealer Fuel pickup body in tank Have the pickup body in the fuel tank replaced every year Spark arresting screen in the muffler If the engine is low on power have the spark arresting screen in the muffler c
19. hat are not installed on all models and related applications are marked with an asterisk Such components may be available as special accessories from your STIHL dealer Engineering improvements STIHL s philosophy is to continually improve all of its products As a result engineering changes and improvements are made from time to time If the operating characteristics or the appearance of your machine differ from those described in this manual please contact your STIHL dealer for assistance Therefore some changes modifications and improvements may not be covered in this manual HS 45 Safety Precautions and Working Techniques Because this is a high speed fast cutting power tool with sharp cutting blades special safety precautions must be observed during operation It is important that you read and understand the instruction manual before using the unit for the first time Keep the manual in a safe place for future reference Non observance of the safety precautions in the instruction manual may cause serious or even fatal injury Always observe local safety regulations standards and ordinances If you have not used this type of power tool before Have your dealer or other experienced user show you how to operate your power tool or attend a special course of training in power tool operation HS 45 Minors should never be allowed to use a power tool Bystanders especially children and anim
20. he power tool by the handle cutting blades behind you Avoid touching hot parts of the machine especially the muffler and gear housing you could suffer serious burns Transporting in a vehicle Properly secure your unit to prevent turnover fuel spillage and damage Fueling Gasoline is an extremely flammable fuel Keep clear of naked flames and fire Do not spill any fuel do not smoke Always shut off the engine before refueling Do not fuel a hot engine fuel may spill and cause a fire Open the fuel cap carefully to allow any pressure build up in the tank to release slowly and avoid fuel spillage HS 45 Fuel your power tool in a well ventilated area outdoors only If you spill fuel wipe the machine immediately if fuel gets on your clothing change immediately Your power tool comes standard with either a screw type or bayonet type fuel cap After fueling tighten down the screw type fuel cap as on securely as possible 5 Insert the fuel cap with hinged grip bayonet type cap correctly in the opening turn it clockwise as far as stop and fold the grip down This reduces the risk of unit vibrations causing the fuel cap to loosen or come off and spill quantities of fuel To reduce the risk of serious or fatal burn injuries check for fuel leakage If fuel leakage is found do not start or run the engine until leak is fixed HS 45 Before Starting Check that your power to
21. hecked STIHL recommends that maintenance and repair work be carried out only by authorized STIHL dealers see Guide to Using this Manual HS 45 English 19 English Maintenance Chart The following maintenance intervals apply to normal operating conditions only 2 If your daily working time is longer than normal or operating conditions are 1 Dy 5 difficult very dusty work area etc shorten the specified intervals accordingly o E T 5 D GV Sop a 5 gt 3 D ce Oe w 2 ge eo 2 2 gt 3 E 3 3 a g u u Su ur Zu u amp u Zu u 2 cS 2 E 3 Visual inspection conditon leaks x x Complete machine Clean x Control handle Check operation x x Clean x x Air filter Replace x Have checked by servicing dealer x Filter in fuel tank 7 Have replaced by servicing dealer x x X Fuel tank Clean x x Check idle setting x x Carburetor Readjust idle x Readjust electrode gap x Spark plug Replace after about 100 operating hours Visual inspection x Cooling air intake Clean x Have checked by servicing dealer x Spark arresting screen in muffler Have cleaned or replaced by servicing X dealer All accessible screws and nuts Tighten x not adjusting screws Clean x Cutting blades Sharpen x Check x Gear lubrication Top up x Safety label Replace x 1 STIHL recommends that this work be done by
22. ied the user assumes responsibility for any damage that may occur Among other things this includes Damage to the engine due to neglect or deficient maintenance e g of air and fuel filters incorrect carburetor adjustment or inadequate cleaning of cooling air inlets intake ports cylinder fins Corrosion and other consequential damage resulting from improper storage Damage to the product resulting from the use of poor quality replacement parts English Parts Subject to Wear and Tear Some parts of the power tool are subject to normal wear and tear even during regular operation in accordance with instructions and depending on the type and duration of use have to be replaced in good time Among other parts this includes Cutting blades Clutch Filters air fuel Starter mechanism Spark plug Components of anti vibration system 21 English Parts and Controls ZLLLTT E g 1 Handle rear 9 Stop switch 17 Cutter guard 2 Throttle trigger interlock 10 Starting throttle lock 18 Cutting blades 3 Throttle trigger 11 Starter grip 19 Cutter blade guard 4 Fueltank 12 Fuel filler cap 5 Filter housing 13 Muffler 6 Carburetor adjusting screw 14 Spark plug boot 7 Starting lock 15 Fuel pump 8 Handle front 16 Choke lever 22 HS 45 Specifications Engine
23. ine is warm Continue cranking until engine runs choke lever to As soon as the engine runs Blip the throttle trigger so that the engine settles down to idle speed HS 45 If the engine stops during warm up or acceleration e Repeat starting procedure as described under If engine is cold Move the blade lock lever back against stop in direction of rear handle Make sure the carburetor is correctly adjusted cutting blades must not run when engine is idling Your unit is now ready for operation To stop the engine e Move stop switch to 0 Additional hints on starting If the engine does not start Make sure all settings are correct choke shutter throttle trigger in starting throttle position stop switch to I Repeat the starting procedure English Zz x o gt lt a 52 ite N If the engine still does not start Move stop switch to 0 Pull off the spark plug boot 8 Unscrew and dry off the spark plug Open the throttle wide Crank the engine several times with the starter to clear the combustion chamber Refit the spark plug and connect the spark plug boot push it down firmly Move stop switch to I Set choke lever to even if the engine is cold e Now start the engine 13 English 253BA007 KN Fuel tank run until dry and then refueled e Press the fuel pump bulb 7 at least five
24. ol is properly assembled and in good condition refer to appropriate chapters in the instruction manual Engage the blade lock if fitted Slide control stop switch must move easily to STOP or 0 Smooth action of throttle trigger and throttle trigger interlock if fitted throttle trigger must return automatically to idle position Check that spark plug boot is secure a loose boot may cause arcing that could ignite combustible fumes and cause a fire Cutting blades securely mounted and in good condition clean move freely not warped properly sharpened and sprayed with STIHL resin solvent lubricant Check cutting blade guard for damage if fitted English Never attempt to modify the controls or safety devices Keep the handles dry and clean free from oil and dirt for safe control To reduce the risk of accidents operate your power tool only if it is in good working order Starting the Engine Start the engine at least 3 meters from the fueling spot outdoors only Place the unit on firm ground in an open area Make sure you have good balance and secure footing Hold the unit securely The cutting blades must be clear of the ground and all other obstructions because they may begin to run when the engine starts Your power tool is a one person unit Do not allow other persons in the general work area even when starting English To reduce the risk of
25. r level 107 dB A Guaranteed sound power level 108 dB A Technical documents deposited at Andreas Stihl AG amp Co KG Produktzulassung Product Licensing Done at Waiblingen 01 09 2003 Andreas Stihl AG amp Co KG Pa oe Steinhauser Director Group Product Management Engineering Services HS 45 0458 253 0121 englisch English
26. receive regular training and are supplied with technical information Use only high quality replacement parts in order to avoid the risk of accidents or damage to the machine Contact a dealer if in doubt STIHL recommends the use of genuine STIHL spare parts Such parts have been optimized for the machine and the user s requirements Before starting any maintenance or repair work and before cleaning the machine always stop the engine and disconnect the spark plug boot to avoid all risk of injury if the engine starts up inadvertently Exception adjustment of carburetor and idle speed HS 45 Do not service or store the machine near a naked light risk of fire due to the fuel Check fuel cap regularly for tightness Use only the spark plugs approved by STIHL see Specifications Inspect ignition lead insulation in good condition secure connection To reduce the risk of fire due 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 Check that the muffler is in perfect working condition Do not use the machine if the muffler is damaged or missing risk of fire Hearing damage Do not touch the hot muffler risk of burns The condition of the anti vibration buffers influences the machine s vibrations they must be examined regularly English Usin
27. ter and clean or replace if necessary e Turn high speed screw H counterclockwise max 3 4 turn as far as stop e Carefully screw the low speed screw L down onto its seat Then open it one turn counterclockwise Start and warm up the engine e Adjustidle speed with the idle speed screw LA so that the cutting blades do not run English Adjusting Idle Speed Engine stops while idling Low speed screw L must be one turn open Turn idle speed screw LA slowly clockwise until the engine runs smoothly cutting blades must not run Cutting blades run when engine is idling Turn idle speed screw LA slowly counterclockwise until cutting blades stop running and then turn the screw about another 1 2 to 1 turn in the same direction Erratic idling behavior poor acceleration although low speed screw is one turn open Idle setting too lean Turn low speed screw L counterclockwise until the engine runs and accelerates smoothly It is usually necessary to change the setting of the idle speed screw LA after every correction to the low speed screw L 15 English Fine Tuning for Operation at High Altitude or at Sea Level AY wT 3 4 1 EOK QUA 253BA000 KN A slight correction of the setting of the high speed screw H may be necessary if engine power is not satisfactory when operating at high altitude or at sea level At high altitudes
28. this 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 all maintenance and repair work be carried out by an authorized STIHL dealer STIHL dealers regularly attend training courses and are supplied with the necessary technical information When repairing the machine only use replacement parts which have been approved by STIHL for this power tool or are technically equivalent Only use high quality replacement parts in order to avoid the risk of accidents or damage to the machine STIHL recommends the use of genuine STIHL replacement parts Original STIHL parts can be identified by the STIHL part number the STIHL logo and the STIHL parts symbol amp The symbol may appear alone on small parts 24 Certificate of Conformity Andreas Stihl AG amp Co KG Badstr 115 71336 Waiblingen certify that the new machine described below Category Hedge trimmer Make STIHL Model HS 45 Serial identification 4228 Displacement 27 2 cm conforms to the specifications of Directives 98 37 EC 89 336 EEC and 2000 14 EC The product has been developed and manufactured in compliance with the following standards EN 774 EN 61000 6 1 EN 55012 The measured and guaranteed sound power level was determined according to Directive 2000 14 EEC Annex V using the ISO 11094 standard Measured sound powe
29. ur dealer or our sales company if you have any queries concerning your machine hau Ce Lue Hans Peter Stihl CE English Guide to Using this Manual Pictograms All the pictograms attached to the machine are shown and explained in this manual The operating and handling instructions are supported by illustrations Symbols in text The individual steps or procedures described in the manual may be marked in different ways e A bullet marks a step or procedure without direct reference to an illustration A description of a step or procedure that refers directly to an illustration may contain item numbers that appear in the illustration Example Loosen the screw 1 Lever 2 In addition to the operating instructions this manual may contain paragraphs that require your special attention Such paragraphs are marked with the symbols described below A Warning where there is a risk of an accident or personal injury or serious damage to property fo Caution where there is a risk of damaging the machine or its individual components C Note or hint which is not essential for using the machine but may improve the operator s under standing of the situation and result in better use of the machine Ri Note or hint on correct procedure in order to avoid damage to the environment Equipment and features This instruction manual may refer to several models with different features Components t
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