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OWNER / OPERATOR MANUAL

BRUSHCUTTERS

848-JAC-93A0 (404)

BC250

The engine exhaust from this product
contains chemicals known to the State
of California to cause cancer, birth
defects or other reproductive harm. 

WARNING

Before using our brushcutters,
please read this manual carefully to
understand the proper use of your
unit.

WARNING

DRIVE UNIT  40400101 and up            ENGINE UNIT  KU40001  and up

APPLICABLE  SERIAL  NUMBERS : 

Summary of Contents for BC250

Page 1: ...s chemicals known to the State of California to cause cancer birth defects or other reproductive harm WARNING Before using our brushcutters please read this manual carefully to understand the proper use of your unit WARNING DRIVE UNIT 40400101 and up ENGINE UNIT KU40001 and up APPLICABLE SERIAL NUMBERS ...

Page 2: ......

Page 3: ...s which must be followed in order to prevent accidents which could lead to serious bodily injury or death This mark indicates instructions which must be followed or it leads to mechanical failure breakdown or damage This mark indicates hints or directions useful in the use of the product NOTE IMPORTANT WARNING CONTENTS 1 Parts location 4 2 Specifications 4 3 Warning labels on the machine 5 4 Symbo...

Page 4: ... 22 3 fl oz 0 62 Transmission Centrifugal clutch Rigid driveshaft Reduction ratio 1 462 Cutting head rotating direction Counter clockwise Operator view Durability period 50hrs Standard Accessories 4 in 2 line Head 1 pc Goggle 1 pc Tool Kit 1 pc Specifications are subject to change without notice 1 Parts location 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 Loop handle 2 Ignition switch 3 Throttle cable 4...

Page 5: ...ing label peel off or become soiled and impossible to read you should contact the dealer from which you purchased the product to order new labels and affix them in the required location s Never modify your brushcutter We won t warrant the machine if you use the remodeled brushcutter or you don t observe the proper usage written in the manual WARNING IMPORTANT 3 Warning labels on the machine 5 ...

Page 6: ...en the choke Position AIR CLEANER COVER 4 Symbols on the machine CEMOTEURESTCONFORMEALAREGLEMENTATIONU S EPA2004POURLESPETITS MOTEURSHORS ROUTE DUREEDECONFORMITEDESEMISSIONS CATEGORIEA SEREFERERAUMODED EMPLOIPOURDEPLUSAMPLESINFORMATIONS FAMMILLE DE MO AMMILLE DE MOTEUR TEUR 4HCPS 025AD EM 4HCPS 025AD EM CYLINDREE CYLINDREE 25 4cm3 DATE DE F TE DE FABRICA ABRICATION TION Avril 2004 INFORMA INFORMAT...

Page 7: ...you should wear proper clothing and protective equipment 1 Helmet 2 Ear protectors 3 Protection goggles or face protector 4 Thick work gloves 5 Non slip sole work boots 2 And you should carry with you 1 Attached tools and files 2 Properly reserved fuel 3 Spare blade 4 Things to notify your working area rope warning signs 5 Whistle for collaboration or emergency 6 Hatchet or saw for removal of obst...

Page 8: ...ate the product properly and in a safe manner 2 When planning your work schedule allow plenty of time to rest Limit the amount of time over which the product is to be used continuously to somewhere around 30 40 minutes per session and take 10 20 minutes of rest between work sessions Also try to keep the total amount of work performed in a single day under 2 hours or less 1 If you don t observe the...

Page 9: ... or broken grass Remove any obstacle before beginning work 3 Inspect the entire unit for loose fasteners and fuel leakage Make sure that the cutting attachment is properly installed and securely fastened 4 Be sure the debris guard is firmly attached in place STARTING THE ENGINE 1 Keep bystanders and animals at least 50feet 15m away from the operating point If you are approached immediately stop th...

Page 10: ...part than the width of your shoulders so that your weight is distributed evenly across both legs and always be sure to maintain a steady even posture while working 2 Keep cutting attachment below waist level 3 Maintain the speed of the engine at the level required to perform cutting work and never raise the speed of the engine above the level necessary 4 If the unit start to shake or vibrate turn ...

Page 11: ...ther part or when replacing the oil or any lubricant always be sure to use only RedMax products or products which have been certified by RedMax for use with the RedMax product 4 In the event that any part must be replaced or any maintenance or repair work not described in this manual must be performed please contact a representative from the store nearest RedMax authorized servicing dealer for ass...

Page 12: ...ere nearby before refueling 4 Wipe spilled fuel completely using a dry rag if any fuel spillage occurs during refueling 5 After refueling screw the fuel cap back tightly onto the fuel tank and then carry the unit to a spot 10feet 3m or more away from where it was refueled before turning on the engine TRANSPORTATION 1 When hand carrying the product cover over the cutting part if necessary lift up t...

Page 13: ...be attach it with the 2 screws and clamp provided SE2 INSTALLING CUTTING HEAD SE3 1 While locking the gear shaft by inserting the supplied tool into the upper holder on the gear box loosen and remove the hexagon nut left handed 2 Fit the line head assembly to the gear shaft over the holders Hand tighten it securely Blades should not be used on this model trimmer 6 Set up 1 SE1 SE2 13 SE3 ...

Page 14: ...the engine HOW TO MIX FUEL Pay attention to agitation 1 Measure out the quantities of gasoline and oil to be mixed 2 Put some of the gasoline into a clean approved fuel container 3 Pour in all of the oil and agitate well 4 Pour In the rest of gasoline and agitate IMPORTANT Gasoline is very flammable Avoid smoking or bringing any flame or sparks near fuel Make sure to stop the engine and allow it c...

Page 15: ...OR YOUR ENGINE LIFE AVOID 1 FUEL WITH NO OIL RAW GASOLINE It will cause severe damage to the internal engine parts very quickly 2 GASOHOL It can cause deterioration of rubber and or plastic parts and disruption of engine lubrication 3 OIL FOR 4 CYCLE ENGINE USE It can cause spark plug fouling exhaust port blocking or piston ring sticking 4 Mixed fuels which have been left unused for a period of on...

Page 16: ...r then throttle lever is in to the start position OP3 6 While holding the unit firmly pull out the starter rope quickly until engine fires OP4 Avoid pulling the rope to its end or returning it by releasing the knob Such actions can cause starter failures 7 Move the choke lever to the open position OP2 And pull out the starter rope quickly to restart engine OP4 8 Allow the engine to warm up for sev...

Page 17: ...g the idling speed CUTTING WORK LINE HEAD USAGE 1 Always wear eye protection such as safety goggles Never lean over the rotating cutting head Rocks or other debris could be thrown into eyes and face and cause serious personal injury 2 Keep the debris guard in place at all times when the unit is operated TRIMMING GRASS AND WEEDS Always remember that the TIP of the line does cutting You will achieve...

Page 18: ...m weeds from wrapping around the head shaft Such materials can stall the head and cause the clutch to slip resulting in damage to the clutch system if repeated frequently ADJUSTING THE LINE LENGTH Your brushcutters is equipped with a semi auto type nylon line head that allows the operator to advance the line without stopping the engine When the line becomes short lightly tap the head on the ground...

Page 19: ...e line ends to release them from the slot 7 Line up the slot on the bottom cap with the hook on the housing press the cap against the housing until it clicks WARNING MA1 every every every 25 50 100 system compornent procedure before hours hours hours note use after after after fuel leaks fuel spillage wipe out fuel tank air filter fuel filter inspect clean replace if necessary see ADJUSTING replac...

Page 20: ...1 Fuel filter SPARK PLUG Starting failure and mis firing are often caused by a fouled spark plug Clean the spark plug and check that the plug gap is in the correct range For a replacement plug use the correct type specified by RedMax MA4 When you take off the spark plug twist 1 and pull off the cap 2 MA5 REPLACEMENT PLUG IS A NGK BPMR7A Note that using any spark plug other than those designated ma...

Page 21: ...ASE MA7 The reduction gears are lubricated by multipurpose lithium based grease in the gear case Supply new grease every 25 hours of use or more often depending on the job condition Remove the side bolt in gearcase opposite of grease nipple before installing new grease to arrange for old grease to exit INTAKE AIR COOLING VENT Never touch the cylinder muffler or spark plugs with your bare hands imm...

Page 22: ...g vent or between the cylinder fins it may cause the engine to overheat and that in turn may cause mechanical failure on the part of the brushcutter MA7 1 Cylinder 2 Intake air cooling vent back PROCEDURES TO BE PERFORMED AFTER EVERY 100 HOURS OF USE 1 Remove the muffler insert a screwdriver into the vent and wipe away any carbon buildup Wipe away any carbon buildup on the muffler exhaust vent and...

Page 23: ...ajor causes of engine starting failure Before storing the unit empty the fuel tank and run the engine until it uses all the fuel left in the fuel line and the carburetor Store the unit indoor taking necessary measures for rust prevention ...

Page 24: ... GAP 0 6 0 7mm spark plug disconnected retighten Case 2 Engine starts but does not keep running Hard re starting CHECK PROBABLE CAUSES ACTION fuel tank incorrect fuel or staled fuel drain it and with correct fuel carburetor adjustment screw out of normal range adjust to normal range muffler cylinder exhaust port carbon is built up wipe away air cleaner clogged with dust wash cylinder fin fan cover...

Page 25: ...rts list then use parts number described in the parts list 4 The contents described in the parts list may change due to improvement 5 The parts for the machine shall be supplied seven 7 years after the machine is discontinued It is possible that some specific parts may be subject to change of their delivery term and list price within the limit of seven 7 years after the machine is discontinued It ...

Page 26: ...12 Parts list 26 Fig 1 DRIVE UNIT BC250 S N 40400101 and up ...

Page 27: ...29 6110 14410 04 SCREW 2 30 6110 14410 05 NUT 2 31 6110 14410 06 SHAFT 1 32 6110 14410 07 SPRING 1 33 6110 14410 08 SPRING 1 34 T3030 14410 09 BUTTON 1 35 6110 14410 10 E RING 1 36 T3002 12220 CORD A 1 37 T3002 12230 CORD B 1 38 6420 14511 TUBE 1 39 1855 82100 CABLE COMP 1 40 848 JAC 90R0 LABEL name 1 42 848 JAC 3200 HANDLE ASSY 1 43 848 JAC 32A0 HANDLE 1 44 0263 90530 SCREW 3 45 0280 10504 NUT 3 ...

Page 28: ...Fig 2 ENGINE UNIT BC250 S N KU40001 and up 28 12 Parts list ...

Page 29: ...OKE LEVER PLATE ASSY 1 41 6634501 SCREW TORX 1 42 5994601 CHOKE PLATE 1 43 4315001 CARBURETOR PLATE 1 44 5945801 CHOKE LEVER 1 45 6634601 BOLT CARBURETOR 2 46 5687301 ELEMENT 1 Key Part Number Description Q ty 47 3099904 COVER ASSY 1 48 5946101 KNOB 1 49 9506501 DECAL 1 50 9506009 DECAL To Start 1 51 9506011 DECAL caution 1 52 8714402 SPARK PLUG 1 53 6634201 CAP SCREW 2 54 6635102 SCREW TORX 2 55 ...

Page 30: ...nsibilities As the small off road engine owner you are responsible for the performance of the required maintenance listed in your owner s manual KOMATSU ZENOAH recommends that you retain all receipts covering maintenance on your small off road engine but KOMATSU ZENOAH can not deny warranty solely for the lack of receipts or for your failure to ensure the performance of all scheduled maintenance A...

Page 31: ... EQUIVALENT IN PERFORMANCE AND DULABILITY MAY BE USED IN NON WARRANTY MAINTENANCE OR REPAIRS AND SHALL NOT REDUCE THE WARRANTY OBLIGATION OF THE COMPANY THE COMPANY IS LIABLE FOR DAMAGES TO OTHER ENGINE COMPONENTS CAUSED BY THE FAILURE OF A WARRANTED PARTS STILL UNDER WARRANTY THE WARRANTY DOES NOT APPLY TO THOSE UNITS WHICH HAVE BEEN DAMAGED BY NEGLIGENCE OF INSTRUCTION LISTED IN THE OWNER OPERAT...

Page 32: ...e utilisée pour l entretien hors garantie ou les réparations hors garantie et ce sans réduire l obligation de garantie incombant à la société La société sera tenue responsable des dommages aux autres composants du moteur causés par la défaillance de pièce s garantie s en période de garantie La garantie ne s applique pas aux unités endommagées par suite de négligence dans la mise en oeuvre des inst...

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