Dolby Laboratories 737 Stereo Receiver User Manual
Contents
1. zurnnsennnnnnnnernannnnnnennnnannner nenn 5 Working technique 4444424444nan0nnnnnann oaa 6 Transport and storage z 422u44nannnnnnnann en nnnn anne enn nn 6 M intenance cocaina 6 Firsta npa 6 Technical datal iniae 7 Designation of components ee 7 PUTTING INTO OPERATION A a a A Berner 8 The Storage of Fuel uuuuerseenseernsnnsnnnnnnennnnnnnnnnnnenn nn 8 FRROMUSUING iii os 9 Starting position HT 2556 D nerseesseersnnnssnnnnnnennnnn nn 9 Starting position HT 2576 E cnneerseensseensnnnnnennnnnnnnnnnn nn 9 Cold St lle nenne naar 10 Warm start au denen nr deren 10 Stopping theiengine u unnn een ea 10 Adjusting the carburetor idle speed eee 10 Tips on hedge trimming eeen 11 MAINTENANCE A 12 Adjusting the cutter slide play occse 12 Cleaning the air filter insert ooooonnonnninninnicnonacanccnnnnss 12 Replacing the spark plug useernneeneennnennnnnner nennen 13 Checking the ignition Spark ooonnnnicinnnnnnnconccnnmcccnnnos 13 Checking the muffler screws Checking the exhaust outlet uunserseenneenneennennn 13 Replacing the suction head uernneereennnersnenennnnn nennen 14 Lubricating the drive ccccccesseceseceeceseeceeeeeeeeeeceeeeeeees 14 Instructions for periodic maintenance 14 Service spare parts and guarantee erene 15 Trouble shooting 444444 ene2. DOLMAR EEG Pos DOLMAR No Qty Denomination 1 377 601 400 1 Tank cap cpl 2 382 650 390 1 Suction head 3 374 300 401 1 Air filter insert 4 381 014 981 1 Spark plug 944 340 001 1 Screwdriver 944 350 000 1 Grease gun 16 Notes DOLMAR PGA Notes DOLMAR DEE Notes DOLMAR PGA DOLMAR VALLE DOLMAR GmbH Postfach 70 04 20 D 22004 Hamburg Germany http www dolmar com Specifications subject to change without notice Form 995 701 252 3 06 GB
3. Declaration The undersigned Shigeharu Kominami and Rainer Bergfeld as authorized by DOLMAR GmbH declare that the DOLMAR machines Type Hedge trimmer HT 2556 D HT 2576 E manufactured by DOLMAR GmbH Jenfelder Str 38 22045 Hamburg Germany conforms to the basic safety and health requirements of the applicable EU guidelines EU Machine guideline 98 37 EG EU EMC guideline 89 336 EWG modified by 91 263 EWG 92 31 EWG and 93 68 EWG Noise emission 2000 14 EG The most important standards applied to properly meet the requirements of the above EU guidelines were EN 774 The conformity assessment procedure 2000 1 4 EG was perfor med per Annex V HT 2556 The measured noise level Lwa is 107 dB A The guaranteed noise level Ld is 109 dB A HT 2576 The measured noise level Lwa is 110 dB A The guaranteed noise level Ld is 111 dB A Hamburg 1 3 2006 For DOLMAR GmbH Shigeharu Kominami Managing Director 2 AM Rainer Bergfeld Managing Director Table of contents Page Conformity Declaration uernnnernee eerren 2 Packaging isis aaia EiS 2 Delivery inventory 4us44 ernennen nennen nn 3 SVIMDOIS u che eqeteteotees anne ren hen iibe 3 SAFETY PRECAUTIONS General precautions unsssnnsensnnennnnnnnnennnnnnnnnnnnnnnnnnnnn 4 Protective equipment uzssurrnsnnnernannnnnn nen nennen nenn 4 Fuels Refuelling en ea 4 5 Putting into operation
4. cutter which should be undamaged and in proper condition Operate the tool so as to minimize noise and emissions do not operate the trimmer if the muffler is defective and make sure to use the right fuel mixture Regularly clean the trimmer Check the fuel cap for a tight seal at regular intervals Follow the accident prevention instructions and recom mendations of your trade association or insurer Do not make any modificationsto the hedge trimmer Doing so will only endanger your safety Perform only the maintenance and repair works described in the instruction manual All other work must be carried out by DOLMAR Service Use only original spare parts and accessories Using other than original DOLMAR parts or accessories brings a high risk of accidents We cannot accept any responsibility for accidents and damage resulting from non DOLMAR parts and accesories which have not been approved First aid For the event of a possible accident please make sure that a first aid kitis always immediately available close by Immediately replace any items used from the first aid box When calling for help give the following information Place of the accident What happened Number of injured Kind of injuries Your name NOTE Individuals with poor circulation who are exposed to excessive vibration may experience injury to blood vessels or the nervous system Vibration may cause the following symptoms to oc
5. innovations Please bear in mind that if parts other than original DOLMAR spare parts are used this will automatically invalidate the DOLMAR product guarantee Guarantee DOLMAR guarantees the highest quality and will therefore reimburse all costs for repair by replacement of damaged parts resulting from material or production faults occurring within the guarantee period after purchase Please note that in some countries particular guarantee conditions may exist If you have any questions please contact your salesman who is responsible for the guarantee of the product Please note that we cannot accept any responsibility for damage caused by Disregard of the instruction manual Non performance of the required maintenance and cleaning Normal wear and tear Obvious overloading due to permanent exceeding of the upper performance limits Use of force improper use misuse or accidents Damage from overheating due to dirt on the fan housing Work on the hedge trimmer by unskilled persons or inappropriate repairs Use of unsuitable spare parts or parts which are not original DOLMAR parts insofar as they have caused the damage Use of unsuitable or old oil Damage related to conditions arising from lease or rent contracts Cleaning servicing and adjustment work is not covered by the guarantee All repairs covered by the guarantee must be performed by a DOLMAR service centre 15 Trouble shooting onl
6. will endanger themselves as well as others due to improper handling Lend the hedge trimmer only to persons who are experienced in the use of such machines Always give the the instruction manual First time users should ask the salesperson to familiarize them with the characteristics of power trimmers Persons under 18 years of age must not be allowed to operate the hedge trimmer Persons over the age of 16 years may ho wever use the hedge trimmer for instructional purposes as long as they are under the supervision of a qualified individual Always pay the utmost attention when using the hedge trim mer Use the hedge trimmer only if you are in good physical condition If you are tired your attention will be reduced Be especially careful at the end of a working day Perform all work calmly and carefully The user is responsible for all damages to third parties Never use the trimmer when under the influence of alcohol drugs or medication A fire extinguisher must be available in the immediate vicinity when working in easily inflammable vegetation or when it has not rained for a long time danger of fire Protective equipment In order to prevent eye hand and foot injuries as well as hearing loss always wear the protective clothing and gear described in the floowing when working with the hedge trimmer Clothing should be appropriate i e snugly fitting but not so tight as to be a hindrance Do not wear jewellery or cl
7. Instruction Manual Important Read this instruction manual carefully before putting the hedge trimmer into operation and strictly observe the safety regulations Keep this instruction manual HT 2576 E http www dolmar com DOLMAR VGL Thank you for purchasing a DOLMAR product Congratulations on your new DOLMAR power hedge trimmer We hope that you will be satisfied with this modern tool DOLMAR is the world s oldest manufacturer of power chainsaws since 1927 We have the longest experience in the business and every DOLMAR hedge trimmer benefits from that experience The HT 2556 D and HT 2576 E models are especially handy and robust hedge trimmers with plenty of performance and a good power to weight ratio The ergonomic design of the grips and controls make for comfortable and untiring operation during extensive jobs The safety features of the HT 2556 D and HT 2576 E hedge trimmers are the current state ofthe art and comply with all na tional and international safety regulations They comprise hand protection features on the front grips and a safety cutoff In order to ensure the proper functioning and performance of your new hedge trimmer and to safeguard your own per sonal safety it is imperative that you read this instruction manual thoroughly before operation Be especially careful to observe all safety precautions Failure to observe these precautions can lead to severe injury or death EU Conformity
8. TE The play is correct when it is just possible to move the disc under the screw head back and forth by hand Then lubricate the cutter with a few drops of oil Caution If the play is insufficient the cutter will heat up and can become damaged Cleaning the air filter insert Push the tab 3 in the direction of the arrow and lift open the air filter cover Take out the foam filter insert Caution To prevent eye injuries do not blow dirt particles out If the insert is very dirty wash it out with standard dishwas hing liquid Cleanit often if it gets very dirty The engine can only develop its full power with a clean filter insert Before putting the insert back in clean out the interior of the air filter with a brush Do not allow dirt particles to get into the induction opening of the carburetor Let the filter insert dry thoroughly and put it back in the filter Caution If the filter insert is damaged replace it immedia tely Torn bits of fabric and large dirt particles can destry the engine Replacing the spark plug CAUTION Do not touch the spark plug or plug cap if the engine is running high voltage Switch offthe engine before starting any maintenance work A hot engine can cause burns Wear protective gloves The spark plug must be replaced in case of damage to the insulator electrode erosion burn or if the electrodes are very dirty or oily Pull the pl
9. and press in grease SHELL ALVANIA RL3 or equivalent H Instructions for periodic maintenance To ensure long life prevent damage and ensure the full functioning of the safety features the following maintenance must be per formed regularly Guarantee claims can be recognized only if this work is performed regularly and properly Failure to perform the prescribed maintenance work can lead to accidents The user of the hedge trimmer must not perform maintenance work which is not described in the instruction manual All such work must be carried out by a DOLMAR service centre Page General Hedge trimmer Clean exterior check for damage In case of damage have repaired by a qualified service centre immediately cutter If necessary have sharpened by a service centre Guide bar Check for damage If damaged have replaced at service centre Before each start cutter Check for damage and sharpness Check slide play if necessary adjust 12 ON OFF switch Safety locking button Throttle lever Functional check 10 Fuel tank cap Check for tightness Every day Air filter insert Clean more frequently if very dirty 12 Idle speed Check cutter must not move 10 Every week Fan housing Clean to maintain good cooling air flow Spark plug Check and replace if necessary 13 Muffler Check for clogging check bolts 13 Every 3 months Suction head Replace 14 Fuel tank Clean Drive Lubricate every 10 20 hours 14 Annually Hedge t
10. cur in the fingers hands or wrists Falling asleep numbness tingling pain stabbing sensation alteration of skin colour or of the skin If any of these symptoms occur see a physician Technical Data Stroke volume HT 2556 D 24 5 HT 2576 E 24 5 Max power at speed 0 88 7 000 0 88 7 000 Idling speed Max engine speed with cutter 2 600 9 800 2 600 9 800 Clutch engagement speed 3 600 3 600 Sound pressure level at the workplace L pam Per EN 774 A3 1 89 4 95 7 Sound power level Lw a per EN 774 A3 106 9 109 8 Vibration acceleration a per EN 774 A3 h w av Front grip idle full load speed 6 8 11 7 0 13 3 Rear grip idle full load speed 8 6 11 7 6 4 7 7 Carburetor WALBRO WYL WALBRO WYL Ignition system electronic electronic Spark plug NGK BMR7A NGK BMR7A Electrode gap 0 6 0 7 0 6 0 7 Chain oil tank capacity 0 6 0 6 Mixture ratio fuel two stroke oil when using DOLMAR oil 50 1 50 1 when using other oils 40 1 40 1 Cut length 56 75 Stroke rate n 2 365 Stroke length 18 18 Max cut diameter 8 8 Tooth interval 28 28 Weight empty tank blade guard removed 5 1 5 4 Dimensions length width height 1 Specifications apply to idle and full load speed in equal propor
11. de still does not come to a stop in idle even after idle speed adjustment do not work with the trimmer under any circumstances Take it to a DOLMAR service centre Tips on trimming hedges The procedure described here can be used very often and makes working easier If a hedge has to be cut back very substantially it should be trimmed in two passes The trapezoidal form shown prevents the lower portion of the hedge from thinning out due to lack of light First cut the hedge to the desired height 1 With practice itis possible to remove cut material from the hedge with a swinging motion To get a straight cut stretch a string along the hedge at the desired height Trim the hedge to a trapezoidal shape about 10 cm 4 in at the top for every 1 m 3 3 of height cutting from bottom to top 2 In this way you avoid cut material falling down into the area not yet cut Round off the top edges of the hedge 3 and finally trim the bottom edges back somewhat 4 Environmental protection information The best times to trim hedges are Broad leaf hedges June and October Coniferous hedges April and August Fast growing hedges About every 6 weeks starting in May Do not use the hedge trimmer during times when people are likely to be resting Before trimming a hedge check to make sure that no birds are nesting in it If they are wait until the young have l
12. e made sure that a No other persons or animals are within the working area b The trimmer operator can step back unhindered in the event of an emergency c The ground is free of all foreign objects brush and branches The operator must have a sure footing risk of stumbling Transportation and storage Always turn off the trimmer for transportation and when moving from one workplace to another Never carry or transport the trimmer with the cutter running Never touch the cutter without protective gloves Always put the supplied blade guard on the cutter before transporting the trimmer for long distances Carry the trimmer only by the grips The cutter Ta should be pointing backwards SA When carrying the hedge trimmer in a vehicle make sure it is in a secure position It should be transported only in the trunk or in a transport area separate from the driver Store the trimmer with the blade guard on the cutter in a safe place in a dry room Keep it out of reach of children Never store the trimmer outdoors EA i After use clean the trimmer in particular the cutter Oil the cutter lightly and put on the blade guard Emtpy the fual tank completely before long term storage or shipping the trimmer Maintenance Always switch off the trimmer and pull AN off the spark plug cap before doing any maintenance Pay special attention to the proper condi tion of the trimmer in particular the
13. eft the nest before trimming near that part of the hedge Dispose of cut material in an environment friendly way or compost it 11 MAINTENANCE As General CAUTION Never do maintenance work near an open flame FIRE HAZARD CAUTION Before doing any work on the trimmer always switch off the engine pull the spark plug cap see Changing the spark plug and wear protec tive gloves Do not attempt to repair a damaged cutter bent broken Clean the trimmer regularly and make sure all screw fasteners are tight Cleaning and care Caution Be especially careful when cleaning and caring for the cutter injury hazard Never touch the cutter with bare hands Always wear protective gloves Regularly check the cutter for damage and clean it with a sui table brush or cloth If after extended use cutting performance is no longer satis factory the blade needs resharpening Take it to a DOLMAR service centre Adjusting the cutter slide play CAUTION Switch off the engine pull the spark plug cap and wear protective gloves The slide play needs adjustment when cuttings get stuck between the blades or the play becomes excessive after extended use through normal cutter wear Loosen nuts 1 one ortwo turns Tighten screws 2 only slightly if necessary loosen them beforehana Adjust all screws as follows Loosen 1 4 turn and hold in this position with screwdriver Tighten nut 1 NO
14. en refuelling Frequently clean and change protective clothes Do not breathe in fuel vapors Inhalation of fuel vapours can be hazardous to your health Do nat spill fuel or oil When you have spilt fuel or oil immediately clean the hedge trimmer Fuel should not come in contact with clothes If your clothes have come in contact with fuel change them et once Ensure that no fuel or oil oozes into the soil environmental protection Use an appropriate base Refuelling is not allowed in closed rooms Fuel vapors will ac cumulate near the floor explosion hazard Ensure to firmly tighten the screw plugs of the fuel tank Change the place before starting the hedge trimmer at least 3 m from the place of refuelling 6 Fuel cannot be stored for an unlimited period of time Buy only as much as will be consumed in the near future Use only approved and marked containers for the transport and storage of fuel Ensure children have no access to fuel Starting operation Do not work on your own Another person must be nearby in case of emergencies within shouting distance Make sure that there are no children or other persons within the hedge trimmer work zone at least 15 m 50 ft away Look out for animals 7 Before starting work check to make sure that the trimmer is in good and safe working order This is a must Be certain that screws and bolts are tightly seated the cutter is sharp and undamaged the throttle works easily t
15. have a limited storage life Fuel and fuel mixtu res age Therefore fuel and fuel mixtures which have been stored for too long can cause starting problems Purchase only that amount of fuel which will be con sumed over the next few months Store fuel safely in a dry place in approved con tainers only AVOID SKIN AND EYE CONTACT Mineral oil products degrease your skin If your skin comes in contact with these substances repeatedly and for an extended period of time it will desiccate Various skin deseases may result In addition allergic reactions are known to occur Eyes can be irritated by contact with oil If oil comes into your eyes immediately wash them with clear water If your eyes are still irritated see a doctor immedi ately fuel oil mixture Refuelling FOLLOW THE SAFETY PRECAUTIONS Be careful and cautious when handling fuels Refuel only with the engine switched off and cooled down Thoroughly clean the area around the caps to prevent dirt from getting into the fuel tank Unscrew the tank cap and fill the tank with fuel mixture until it reaches the bottom edge of the filler neck Be careful not to spill fuel when pouring Screw the tank cap back on hand tight After refuelling clean the tank cap and area and check for leaks Starting position for the HT 2556 D Start the trimmer only after it has been completely as sembled Move at least 3 meters 10 feet away from w
16. he safety cutoff functions properly the grips are clean and dry and the Start Stop switch works properly The hedge trimmer must not be used unless fully assembled Make sure you have a secure footing before starting operation Start the trimmer only as described in the Instruction Manual 8 or 9 Do not use any other starting methods During starting place the tool on a stable surface and hold it steady The cutter most not be obstructed Always hold the trimmer with both hands when working One hand on the rear grip the other on the front grip Hold each grip with your thumb around it CAUTION The blade will still run for a short time after you release the throttle free running effect Before starting the hedge trimmer ensure that you have a safe footing Use the trimmer in such a way that exhaust cannot be inhaled Do not work in enclosed spaces poisoning hazard Immediately turn off the engine if there is any noticeable change in the way the tool runs Always turn off the engine before checking the condition of the tool taking care of problems or refuelling 10 Always turn off the engine before removing any jammed cuttings from the cutter If the cutter touches rocks nails or other hard objects immedi ately switch off the engine and check the blade When stopping work or leaving the working place switch off the hedge trimmer 10 and put it down such that nobody is endan gered Do not put the overheated power
17. hedge trimmer in dry grass or on any inflammable objects The muffler is very hot danger of fire 3 meters HT 2556 D HT 2576 E 10 O Maintenance O Stopping work O Refuelling O Transport O Putting out of function Working technique Work only in good lighting and visibility Be especially care ful on slippery and wet surfaces ice and snow danger of slipping Neverwork onanunstable surface Pay attention to obstacles in the work area risk of stumbling Pay constant attention to good footing Never cut above your shoulder height Never use the trimmer while standing on a ladder Do not bend too far over while working Always cut away from your body Do not allow the cutter to touch the ground when running Never touch the cutter during operation Donotuse the cutter to lift or push away pieces of wood or other objects Keep the trimming area free of foreign objects such as sand rocks nails etc These and other foreign objects will damage the cutter Be especially careful around wire fences Do not touch the wire with the cutter Always start the cut with the cutter running The trimmer can cut twigs up to 8 mm diameter but this depends on the species age moisture content and hard ness of the wood Cut thick branches to length with pruning shears before trimming the hedge Do not start working until you hav
18. here you fuelled the trimmer Make sure you have a secure footing and place the trimmer on the ground cutter to the left The tip of your right foot should be firmly placed in the rear handguard Grasp the front grip firmly with your left hand and tip the trimmer away from yourself until you feel resistance the cutter will be lifted slightly so that it is not touching the ground Do not use any other starting method Starting position for the HT 2576 E Start the trimmer only after it has been completely as sembled Move at least 3 meters 10 feet away from where you fuelled the trimmer Make sure you have a secure footing and place the trimmer on the ground cutter to the right The tip of your right foot should be firmly placed on the front grip Grasp the rear grip firmly from the top with your left hand and tip the trimmer away from yourself until you feel resistance the cutter will be lifted slightly so that it is not touching the ground Do not use any other starting method C The figure shows HT 2556 D These operations are identical for the HT 2576 E Cold start Move the ON OFF I O switch 2 to position I Turn the starting lever 6 to the START position Press the fuel pump 5 several 7 10 times to supply fuel to the carburetor Assume the starting position see above under Starting posi tion Pull the starter cable by the grip 3 out slowly until you feel resista
19. nce the piston is now before top dead center Pull quickly and powerfully until the engine starts Caution Never pull the starter cable out more than about 50 cm 20 and guide it back slowly by hand As soon asthe engine is running grasp the grip the safety cutoff 1 is actuated by the palm of the hand and tap the throttle 4 The starting lever 6 will move to the RUN position and the engine will run in idle Warm starting Move the ON OFF I O switch 2 to position I and start the engine If necessary push the fuel pump 5 a few times Switching off the engine Move the ON OFF I O switch 2 to position O N Adjusting the carburetor idle The carburetor is an injection model with fixed nozzles This makes adjustment of the idle and main nozzle superfluous and these are impossible on this model If necessary the idle speed can be adjusted with the adjusment screw 8 Idle speed correction is necessary if the blade moves in idle i e when the throttle is not actuated The blade must be completely stationary in idle Use a screwdriver 7 blade width 4 mm part no 944 340 001 for this adjustment Let the engine warm up for 3 5 minutes before adjusting the carburetor Avoid high engine speeds Adjusting the idle speed Turning the adjustment screw 8 counter clockwise Idle speed goes down Turnign the adjustment screw clockwise Idle speed goes up Caution If the bla
20. othing which could get caught on twigs and branches If you have long hair always wear a hairnet Eye protection 1 keeps wood chips out of the eyes It is important to wear protective goggles or face protection whe never working with the hedge trimmer in order to prevent eye injury Wear adequate hearing protection equipment ear muffs 2 ear plugs etc Octave brand analysis upon request The safety jacket 3 is provided with special signal coloured shoulder straps and is comfortable and easy to care for We strongly recommend its use The protective brace and bib overall 4 is made of a nylon fabric with 22 layers and protects against cuts We strongly recommend its use Work gloves 5 of stout leather are part of the basic equipment of the hedge trimmer and must always be worn when working with it During operation of the hedge trimmer safety shoes or safety boots 6 fitted with anti skid sole steel toe caps and protection for the leg must always to be worn Safety shoes equipped with a protective layer provide protection against cuts and ensure a secure footing Fuels Refuelling Stop the engine before refuelling the hedge trimmer Do not smoke or work near open fires 5 Let the engine cool down before refuelling Fuels can contain substances similar to solvents Eyes and skin should notcome in contact with mineral oil products Always wear protective gloves wh
21. r nenn ennn nennen nenn 16 Extract from spare parts list me een nennen 16 Service centres see enclosure Packaging Your DOLMAR hedge trimmer is delivered in a cardboard box to protect it during shipping Cardboard is a basic raw material and is consequently reuseable or suitable for recycling waste paper recycling O TER BR A Delivery inventory DOLMAR RE Hedge trimmer HT 2576 E depending on order Hedge trimmer HT 2556 D depending on order Knife guard Universal wrench Instruction Manual not shown akh ON In case one of the parts listed should not be included in the delivery inventory please consult your sales agent Symbols You will notice the following symbols on the hedge trimmer and in the Instruction Manual Read Instruction Manual and follow all warnings and safety instructions Fuel and oil mixture Particular care and attention a Cold starting lever Choke Forbidden AN Start engine STOP Wear eye and Switch off motor hearing protection J Wear protective gloves On Off switch No smoking First aid GR NE py DAN No open fire e ne pee Recycling Stop engine C CE marking 8808 Pe SAFETY PRECAUTIONS General precautions In order to ensure safe operation the operator must read this instruction manual to familiarize him or herself with the operation of the hedge trimmer Users insufficiently informed
22. rimmer Check at an authorized service centre Storage Hedge trimmer Clean exterior check for damage In case of damage have repaired by a qualified service centre immediately cutter Lightly oil Fuel tank Empty and clean Carburetor Run empty 14 Service spare parts and guarantee Workshop service The maintenance and repair of modern hedge trimmers as well as all safety devices require qualified technical training and a special workshop equipped with special tools and testing devices All work not described in this Instruction Manual must be done only by a DOLMAR service centre The DOLMAR service centres have all the necessary equipment and skilled and experienced personnel who can work out cost effective solutions and advise you in all matters Repair attempts by third parties or unauthorized persons will void the warranty Please contact your nearest service centre list enclosed Spare parts Reliable long term operation as well as the safety of your hedge trimmer depend among other things on the quality of the spare parts used Use only original DOLMAR parts Only original spare parts and accessories guarantee the highest quality in material dimensions function and safety Original spare parts and accessories can be obtained from your local dealer He will also have the spare part lists to determine the required spare part numbers and will be constantly informed about the latest improvements and spare part
23. sured DOLMAR high performance two stroke engine oil is available in the following sizes to suit your individual requirements 11 order number 980 008 107 100 ml order number 980 008 106 In case DOLMAR high performance two stroke engine oil is not available it is urgently recommended to use a mixture ratio of 40 1 with other two stroke engine oils as otherwise optimum operation of the engine cannot be guaranteed Caution Do not use ready mixed fuel from petrol stations The correct mixture ratio 50 1 when using DOLMAR high performance two stroke engine oil i e mix 50 parts gasoline with 1 part oil 40 1 when using other two stroke engine oils i e mix 40 parts gasoline with 1 part oil NOTE For preparing the fuel oil mixture first mix the entire oil quan tity with half of the fuel required then add the remaining fuel Thoroughly shake the mixture before filling it into the hedge trimmer tank AS Gasoline 50 1 40 1 OIL OIL 50 1 amp 1000 cm 1 litre 20 cm 25 cm 5000 cm 5 litres 100 cm 125 cm 10000 cm 10 litres 200 cm 250 cm It is not wise to add more engine oil than specified to ensure safe operation This will only result in a higher production of combus tion residues which will pollute the environment and clog the exhaust channel in the cylinder as well as the muffler In addition fuel consumption will rise and perform ance will decrease The Storage of Fuel Fuels
24. tions Designation of components 840 246 225 1 041 280 258 DOLMAR GRID 13 Spark plug cap 14 Start lever choke 15 Air filter cover 16 Fuel pump primer 17 Serial number 1 Rear grip 7 Muffler 2 Safety cutoff 8 Front grip 3 Throttle lever 9 Hand guard 4 ON OFF I O switch 10 Impact guard 5 Starter grip 11 Cutter 6 Fuel tank cap 12 Blade guard PUTTING INTO OPERATION Fuel CAUTION This trimmer is powered by mineral oil products gasoline petrol and oil Be especially careful when handling gasoline petrol Avoid all flame or fire Do not smoke explosion hazard Fuel mixture The engine of the hedge trimmer is a high efficiency two stroke engine It runs on a mixture of gasoline and two stroke engine oil The engine is designed for unleaded regular gasoline with a min octane value of 91 ROZ In case no such fuel is available you can use fuel with a higher octane value This will not affect the engine In order to obtain an optimum engine output and to protect your health and the environment use unleaded fuel only For lubricating the engine use a two stroke engine oil quality grade JASO FC or ISO EGD which is added to the fuel The engine has been designed for use of DOLMAR high performance two stroke engine oil and a mixture ratio of only 50 1 to protect the environment In addition a long service life and reliable ope ration with a minimum emission of exhaust gases are en
25. ug cap 4 offthe spark plug Use only the combination wrench supplied with the saw to remove the spark plug Electrode gap The electrode gap must be 0 6 0 7 Checking the ignition spark Use insulated pliers to hold the loose spark plug 5 with the spark plug cap firmly attached againstthe engine housing away from the spark plug hole Put the ON OFF I O switch in the I position Pull the starter cable hard If the function is correct an ignition spark must be visible near the electrodes CAUTION Use only the following spark plug NGK BPMR 7A Checking the muffler bolts cleaning the exhaust outlet Caution Do not tighten the muffler bolts when the engine is hot The muffler bolts 6 are directly accessible so they can be checked for tightness If loose hand tighten caution do not over tighten Regularly clean the exhaust outlet 7 with a suitable tool 13 Replacing the suction head The felt filter 8 of the suction head can become clogged It is recommended to replace the suction head once every three months in order to ensure unimpeded fuel flow to the carburetor To remove the suction head for replacement pull it out through the tank filler neck using a piece of wire bent at one end to form a hook Lubricating the drive The drive needs to be lubricated every 10 to 20 operating hours Apply a grease gun at the lubrication opening 9
26. y with difficulty No ignition spark Malfunction System Observation Cause cutter does not move Clutch Engine runs Clutch damaged cutter gets very hot cutter High heating Insufficient cutter slide play Engine does not start or Ignition system Ignition spark Malfunction in fuel supply system com pression system mechanical malfunction Switch on STOP fault or short circuit in the wiring plug cap or spark plug defective may be involved simultaneously Fuel supply Fuel tank is filled Carburetor defective suction head dirty fuel line bent or interrupted Compression Inside Cylinder base packing ring defective radial system shaft packings defective cylinder or piston rings defective Outside Spark plug does not seal Mechanical malfunction Starter does not engage Spring in starter broken broken parts inside the engine Warm start difficulties Carburetor Fuel tank is filled Wrong carburetor adjustment Ignition spark Engine starts but Fuel supply Fuel tank is filled Wrong idling adjustment suction head dies immediately or carburetor dirty Tank venting defective fuel line interrupted cable defective ON OFF switch defective Insufficient power Several systems Engine is idling Air filter dirty Carburetor dirty muffler clogged exhaust channel in cylinder clogged Extract from the spare parts list Use only original DOLMAR parts For repairs and replacement of other parts see your DOLMAR service centre
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