Cobra MT250C Скачать руководство пользователя страница 16 | Manualshive

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Figure 34

Figure 35

Every 10 hours of operation:
(more frequently in dusty or dirty
conditions):
remove the air cleaner element from the
air cleaner housing and clean it
thoroughly with soap and water. Rinse
and dry thoroughly. Add a few drops of
oil and work it in, then reassemble the
element. See Figure 34.

CAUTION!

10-Hour Maintenance

Do not operate the machine if the air
cleaner or element is damaged, or if
the element is wet or water soaked.

CAUTION!

10/15-Hour Maintenance

Before removing the spark plug, clean
the area around the plug to prevent dirt
and dust from getting into the engine's
internal parts.

Every 10 to 15 hours of operation:
remove and clean the spark plug. See
Figure 35. Adjust the spark plug
electrode gap to 0.6~0.7mm
Replace the spark plug as necessary.

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Содержание MT250C

Страница 1: ......

Страница 2: ... or serious injury CAUTION A statement preceded by the word CAUTION contains information that should be acted upon to avoid damage to the machine IMPORTANT NOTE A statement preceded by the word IMPORTANT is one that possesses special significance A statement preceded by the word ONTE contains information that is handy to know and may make your job easier A statement preceded by the triangular atte...

Страница 3: ... intenaded to help you get the most from your machine as well as to protect you and others from harm these procedures are guidelines for safe operation under most conditions and are not intended to replace any safety rules and or laws that may be in force in your area If you have questions regarding your power tool or if you do not understand someting in this manual your local dealer will be glad ...

Страница 4: ...nd follow this manual make sure anyone using the trimmer dose likewise Failure to do so could result in serious personal injury or machine failure Keep this manual for future reference Always wear a hard hat to reduce the risk of head injuries during operation of this machine In addition always wear eye and hearing protection We recommends wearing a face shield as additional face and eye protectio...

Страница 5: ...le and fire could lead to serious personal injury or property damage Never operate this machine or other power equiment if you are tired ill or under the influence of alcohol drugs or any other substance that could affect your ability of judgement Do not operate the articulated hedge trimmer with the muffler removed Make sure there is always good ventilation when operating the articulated hedge tr...

Страница 6: ...of bube Do not force the lower tube info the powerhead Excessive force can damage the components 4 Push the lower tube towards the tube clamp and rotate it by hand to check that the mainshaft splines engage the powerhead See Figure 5 5 Insert the lower tube into the tube clamp until it bottoms and align the positioning holes on the tube and clamp then install the screw 6 Fasten the clamp securely ...

Страница 7: ...leaner cover 2 Connect the end of the throttle cable to the joint on the top of the carburetor See Figure 6 figure 7 Connecting switch wires connect the switch wires between the engine and the main unit Pair the wires of the same color See figure 8 6 ...

Страница 8: ...ee play on the throttle trigger of about 6mm See Figure 10 When 6mm free play is achieved tighten the two 10mm throttle cable nuts When the throttle cable is correctly adjusted and the throttle trigger is fully depressed full throttle the throttle will contact the stop on the throttle body See Figure 11 A dab of Never Seez TM or equivalent eases removal 4 Replace the air cleaner cover 7 ...

Страница 9: ...ss the latch and insert the powerhead lower tube assembly into the coupler until it bottoms Release the latch Rock the upper tube assembly back and forth until you are sure it snaps in place by the coupler lock See Figure 12 4 When the two tube halves are locked together slide the latch protector into groove of latch then tighten the coupler screw See Figure 13 Disassembling The Pole sections 1 Wi...

Страница 10: ...ipe all spilled fuel and move the pruner at lease 3 meters 10 feet from the fueling point before restarting Never smoke or light any fires near the pruner or fuels Never place any flammable material near the engine muffler Never operate the engine without the muffler and spark arrestor in place and properly functioning Never operate this machine if fuel system components are damaged or are leaking...

Страница 11: ...tton While holding down the throttle lock button release the throttle trigger and throttle lockout lever Release the throttle lock button 2 Slide the ignition switch to the I start Position See Figure 25 3 Prime the engine by depressing the carburetor primer bulb four or five times See Figure 26 You should be able to see fuel inside the bulb 4 Choke the engine by moving the choke lever up to the c...

Страница 12: ...e engine Never pull the starter cord to its full length Always rewind the starter cord slowly 1 Place the unit firmly on the ground making sure it is stable and that the cutting attachment is free and clear of any bystanders or objects Hold onto the hand grip on the outer tube with your left hand grasp the starter rope handle with your right hand See Figure 28 2 Pull the starter handle slowly unti...

Страница 13: ...rn counterclockwise to remove See Figure 30 If the spark plug is fouled or soaked with fuel clean the lug as necessary Figure 30 Figure 31 2 Open the choke Figure 31 and fully depress the throttle trigger with your left hand then pull the starter handle rapidly with your right hand to clear excess fuel from the combustion chamber CAUTION The cutting attachment can continue rotating after the engin...

Страница 14: ... unit cannot be adjusted Safety Operation This machine is designed especially for cutting branches Never use this machine for any other purposes Never try to cut stones metals plastics or any other hard objects Using for other purposes than cutting branches may damage the machine or cause serious injury Preparations Wear suitable protective clothing and equipment see section safety Precautions Cho...

Страница 15: ...secured and in good condition A worn or damaged muffler is a fire hazard and may also cause hearing loss SPARK PLUG Keep the spark plug and wire connections tight and clean Daily maintenance Prior to each work day perform the following Remove all dirt and debris from the engine check the cooling fins and air cleaner for clogging and clean as necessary see Figure 33 Carefully remove any accumulatin...

Страница 16: ...ent See Figure 34 CAUTION 10 Hour Maintenance Do not operate the machine if the air cleaner or element is damaged or if the element is wet or water soaked CAUTION 10 15 Hour Maintenance Before removing the spark plug clean the area around the plug to prevent dirt and dust from getting into the engine s internal parts Every 10 to 15 hours of operation remove and clean the spark plug See Figure 35 A...

Страница 17: ...ting Method Recoil Cooling System Forced air Stopping Method Slide swich Transmission Type Automatic centrifugal clutch with bevel gear Oil Tank Capacity 400ml Gearcase Ratio 1 06 1 Standard Equipment tool kit containing a spark plug wrench 4mm allen wrench and 8mm x 10mm spanner strap chain cover phillips screwdriver Sound Pressure Level Sound Power Level Vibration Level 91 dB A 106 dB A 2 2 32 2...

Страница 18: ...TER 1 PARTS LOCATION See figure 1 1 Air cleaner 2 Fuel tank 3 Clutch coupler system 4 Ignition switch 5 Throttle trigger 6 Hanger 7 handle A 8 Handle B 9 Handle C 10 Outer pipe 11Debris shield 12 Gearcase 13 Blade ...

Страница 19: ...h cutter If warning seals peel off or become soiled and impossible to read you should contact the dealer from which you purchased the product to order new seals and offer the new seal in the required location Never remodel your brush cutter We won t warrant the machine If you use the remodeled brush cutter or you don t observe the proper usage written in the manual 3 Symbols on the machine IMPORTA...

Страница 20: ...in harmful carbon monoxide E Never use your brush cutter under circumstance like those described below 1 When the ground is slippery or when other conditions exist which might make it impossible to maintain a steady posture while using the brush cutter 2 At night at times of heavy fog Or at any other time times when your field or vision might be limited and it would be difficult to gain a clear vi...

Страница 21: ...ver use your brush cutter when you wearing pants with loose cuffs when wearing sandals or even barefoot WARNING CONSIDERING HANDLING OF FUEL A The engine of this product is designed to run on a mixed fuel which contains highly flammable gasoline You should never store cams of fuel or refill the fuel tank in any place where there is a boiler stove wood fire electrical sparks welding sparks or any o...

Страница 22: ... G Check the bolt to fasten the blade and be sure the blade turn smoothly without abnormal noise NOTES ON STARTING THE ENGINE 1 Take a careful look around to make sure that obstacles exist within a perimeter of 15m or less around brush cutter 2 Place the brush cutter onto the ground in a flat clear area and hold it firmly in place so as to ensure that neither the blades nor the throttle came into ...

Страница 23: ...ANSPORTATION OPERATION SAFETY PRECAUTIONS 1 Grip the handle on the brush cutter firmly with both hands If you suspend the work place the throttle into the idling position 2 Always be sure to maintain a steady even posture while working 3 Maintain the speed of the engine at the level required to perform cutting work and never raise speed of the engine above the level necessary 4 If the grass get ca...

Страница 24: ...ucts which have been certified by for use with the brush cutter 5 SET UP HANDLE Fix Handle with four bolts see figure 9 INSTALL GEARCASE 1 Loosen two clamp screws and remove one index screw 2 Push the pipe towards gearcase and rotate it by hand to check that the mainshaft splines engage the powerhead 3 Insert the pipe into gear case until it bottoms and align the positioning holes on the pipe and ...

Страница 25: ...ace to the blade 4 Put the attached bolt cover on the outer holder and secure it withthe bolt left screw together with the spring washer and thewasher 1 Nut 2 Outer holder 1 3 Outer holder 2 4 Blade 5 Gear shaft 6 Bar 7 Inner holder 8 Gear case INSTALLING THE NYLON CUTTER OPTION Figure 13 1 Set correctly the inner holder and the outer holder th the gear shaft 2 Screw the attached bold M8 Left into...

Страница 26: ...ip of blade Adjust the engine speed according to the cutting objects Cut the young grass at middle speed and cut shrubs or tough and thick weeds at high speed 1 For branches and trees 2 For grass and weeds 3 Direction of cutting 4 Direction of rotation IMPORTANT Operating at low speed makes it easier for grass weeds or twigs to become caught up in the blades and also it makes the shaft and clutch ...

Страница 27: ...the starter rope 2 3 times set the plug back and stop it at the contraction position 4 Apply snti rust oil to the metal parts such as the throttle wire put the cover on the blade and keep it indoor avoiding dampness 8 MAINTENANCE BLADE Sharpen each culting edge and make sure the bottom comer is rounded figure 24 Do not cool the blade with water in case of using grinder It may cause cracks on blade...

Страница 28: ...Nylon cutter Counterclockwise from operator s view 2040 380 330 6 5 Type Displacement Max output Max engine speed Engine speed at idle Carburetor Starting method Fuel Stopping method Fuel tank capacity Single cylinder air cooling 2 cycle gasoline engine 25 4CC 0 85kw at 8000rpm 11000rpm 3000rpm 200rpm Diaphragm type Recoil Mixture gasoline 2 cycle engine oil 25 1 Slide switch 700CC Engine Name Spe...

Страница 29: ...PM without a load Doing so could damage the engine When transporting the pruner in a vehicle tie it down securely to prevent damage and fuel spillage Always stop the engine and allow it to cool before refueling Avoid overfilling and wipe off any fuel that may have spilled Never place flammable material close to the engine muffler and never run the engine without the spark arrestor screen in place ...

Страница 30: ...ad injuries during operation of this machine Wear nonslip heavy duty work gloves to improve your grip on the pole pruner handle Wear snug fitting clothes that Also permits freedom of movement NEVER wear shorts Wear sturdy footwear with nonslip soles to provide good footing Steel toes safety boots are recommended Never operate the pruner at an angle greater than 60 c in order to reduce the risk of ...

Страница 31: ...components required for a complete unit Powerhead assembly Lower tube assembly Upper tube saw assembly chain and guide bar Kit with this manual and tool kit for routine maintenance Chain cover Carefully inspect all components for damage IMPORTANT The terms left hand and LH right right hand and RH front and rear refer to directions as viewed by the operator during normal operation WARNING Do not ma...

Страница 32: ...m hex Wrench and 8mm 10mm spanner Use unit without upper tube If the lower tube assembly is long enough you can use it only without upper tube according to the working condition Operate as follows 1 Follow disassemblying the pole sections section to remove the upper tube coupler assembly from gearcase 2 Follow assembling the pole sections section to assemble the gearcase onto the lower tube assemb...

Страница 33: ...ain tensioning pin with the hole in the guide bar See Figure 17 3 Install the chain loop over the drive links within the guide bar groove and then align the chain over the drive sprocket Make sure the cutter are properly oriented as shown in Figure 18 If chain installation is difficult or if the chain appears too tight refer to the section Adjusting the China on the next page 4 Install the sprocke...

Страница 34: ...ment procedure 2 Loosen the sprocket cover nut with a Plug wrench Figure 19 IMPORTANT Proper chain adjustment is essential for maximum performance long chain life and operator safety Always inspect chain tension before operating the pole pruner 3 Lift the nose of the guide bar while turning the chain tensioning screw See Figure 20 4 Pull the chain by hand along the top of the guide bar several tim...

Страница 35: ...te WARNING CAUTION An increase in bar oil flow rate will speed oil consumption requiring more frequent checks on the oil reservoir To ensure sufficient lubrication it may be necessary to check the oil level more frequently than at fuel tank refills The guide bar and chain are lubricated automatically by a pump that operates whenever the chain rotates The pump is set at the factory to delivery a me...

Страница 36: ...on the position of the branch Typical applications Standard cut The most convenient working position is a tool angle of 60 but any other angle may be used to suit the situation concerned Cutting above obstacles Thanks to the unit s long reach it is possible to prune branches that are overhanging obstacles such as rivers or lakes The tool angle in this case depends on the position of the branch 35 ...

Страница 37: ...nderside of the branch To do this apply the cutting attachment and pull it across the bottom of the branch as far as the bar nose Perform the cross cut 2 Flush cutting thick branches If branch diameter is more than 10cm 4 first perform undercut 3 and cross cut at a distance A of about 25cm 10 from the final cut Then carry out the flush cut 4 starting with a relieving cut and finishing with a cross...

Страница 38: ...thium base grease about 10 grams into the grease fitting until you see old grease being purged from the gearcase which can be seen in the outer tube cavity Clean up excess grease then reassemble the gearcase onto the outer tube Old grease being purged from the gearcase which can be seen in the outer tube cavity Clean up excess grease then reassemble the gearcase onto the outer tube CAUTION Use a w...

Страница 39: ...e the saw to vibrate or cut erratically 1 Using a 4 5mm round file sharpen all cutters to a 30 angle Make sure that one fifth 20 of the file s diameter is always held above the cutter s top plate For consistent filing angles use a filing guide such as Oregon p n 31692 or equivalent R 2 After all cutters are sharpened use a depth gauge joiner Oregon p n 106738 or equivalent to measure the height of...

Страница 40: ...too low or the file was too small Result Rough cutting Chain grabs cutters dull quickly or won t hold a cutting edge Remedy File cutters at recommended angle Check file size Back slope on side plate cutting edge Cause File held too high or the file was too large Result Cutters won t feed into wood Slow cutting Must force chain to cut causes excessive bottom wear Remedy File cutters at recommended ...

Страница 41: ...ccording to this owner s manual and follow the recommended scheduled maintenance Never modify or disable any of the hedge trimmer s safety devices Always use genuine parts and accessories when repairing or maintaining this machine Do not make unauthorized modifications to the articulated hedge trimmer When transporting the hedge trimmer in a vehicle tie it down securely to prevent fuel spillage or...

Страница 42: ...components required for a complete unit Cutter assembly Cutter blade cover Hand protector clamp screw nut Caution labels Owner s manual Tool kit for routine maintenance IMPORTANT Carefully inspect all components Making sure they are not damaged The terms left left hand and LH right right hand and RH front and rear refer to directions as viewed by the operator during normal operation Do not make un...

Страница 43: ...to the gearbox align the hexagonal screws and then tighten on both sides as shown in the illustration 3 Working head rotation Only change the position of the head when the engine is not operating 1 Pull back the lock collar as shown in the illustration 2 Select the required working angle for the hedge trimmer head rotating the side lever 42 4 Gearbox Grease 1 After 25 hours run time grease the gea...

Страница 44: ...ectly underneath the branch you are cutting be wary of falling branches Note that a branch may spring back at you after it hits the ground Working position Hold the control handle with your right hand and the shaft with your left hand Your left arm should be extended to the most comfortable position Use lopping shears to cut out thick branches first If a radial cut is necessary cut a little at a t...

Страница 45: ...ad cut Hold the shaft upright with a 90 blade angle to cut an upper surface of a hedge Vertical cut Cutting without standing directly next to hedge e g flowerbed between operator and hedge Horizontal cut Cutting without standing directly in front of the hedge e g reaching over a flowerbed ...

Страница 46: ...rip on the trimmer handle Wear snug fitting clothes that also permit freedom of movement NEVER wear shorts Always operate with both hands firmly gripping the machine Keep a proper footing and do not overreach maintain your balance at all times during operation Keep bystanders at least 50feet 15meters away from the operating trimmer to reduce the risk of being cut by the moving blades or struck by ...

Страница 47: ...rass trimmer 420mm Pruner 295mm Hedge trimmer 620mm Measured sound power level 98dB A Guaranteed sound power level 110dB A Notified Body for EC Directive Intertek Testing Services Shanghai Building No 86 1198 Qinzhou Road North Shanghai 200233 China Applicable EC Directives 2006 42 EC 2004 108 EC 2000 14 EC 97 68 EC Applicable Harmonized Standards EN ISO 11680 1 2011 EN ISO 11806 1 2011 EN ISO 105...

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