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G G
B B
OWNER’S MANUAL
BRUSHCUTTERS
BC2603DL
BC2603DW
GB-1
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EXPLANATION OF SYMBOLS AND SAFETY WARNINGS WARNING!!! RISK OF DAMAGING HEARING IN NORMAL CONDITIONS OF USE, THIS MACHINE MAY INVOLVE A DAILY LEVEL OF PERSONAL EXPOSURE TO NOISE FOR THE OPERATOR EQUAL TO OR GREATER THAN 85 dB(A) MODEL SOUND LEVEL VIBRATION LEVEL ISO 7916 EN27917 ISO 10884 LwA idling racing LpA measured guaranteed 3 2 2 BC2603DL 25.4 cm 2.4 m/s 3.0 m/s 97.3 dB(A) 107.9 dB(A) 110 dB(A) 2 2 3 BC2603DW 97.3 dB(A) 107.9 dB(A) 110 dB(A) 1.7 m/s 4.9 m/s 25.4 cm GB-2
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SAFETY FIRST Contents Instructions contained in warnings within this manual marked with a symbol concern critical points which must be taken into consideration to prevent possible serious bodily injury, and 1. Parts location .................................................. 4 for this reason you are requested to read all such instructions 2. Specifications ................................................. 4 G carefully and follow them without fail. 3. Warning labels on the machine ...........
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2. Specification BC2603DL / BC2603DW Overall size (L W H) ............................ 1800 x 395 x 315 / 1800 x 610 x 520 mm Dry weight .................................................................................................. 5.3 / 6.7 kg Engine Model ............................................................................................... Zenoah G26L 3 Displacement ........................................................................................... 25.4 cm Fuel ......
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5. For safe operation b. At night, at times of heavy fog, 1. Read this manual carefully until or at any other times when you completely understand and your field of vision might be follow all safety and operating limited and it would be diffi- instructions. cult to gain a clear view of the 2. Keep this manual handy so that G working area. you may refer to it later when- B c. During rain storms, during ever any questions arise. Also lightning storms, at times of note, if you have any questions
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5. For safe operation BEFORE STARTING ensure that neither the cutting THE ENGINE part nor the throttle come into 1. The area within a perimeter of contact with any obstacle when 15 m of the person using the the engine starts. product should be considered a hazardous area into which no one WARNING should enter. If necessary, yellow warning rope, warning signs Never place the throttle into the should be placed around the pe- high-speed position when starting rimeter of the area. When work is t
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5. For safe operation could result in serious burns or elec- HANDLING FUEL trical shock. 1. The engine of the KOMATSU ZENOAH product is designed to run on a mixed fuel, which con- • IF SOMEONE COMES tains highly flammable gasoline. G 1. Guard against hazardous situa- Never store cans of fuel or refill B tions at all times. Warn adults to the tank of the unit in any place keep pets and children away from where there is a boiler, stove, the area. Be careful if you are ap- wood fire, electrical
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6. Set up INSTALLING HANDLE (BC2603DL) • Mount the handle to the shaft tube and clamp it at a location that is comfortable to you. INSTALLING LINE HEAD 1. While locking the gear shaft by inserting the supplied tool into the upper holder on the gear box, loosen INSTALLING HANDLE (BC2603DW) and remove the bolt (left-handed). 1. Loosen the 4bolts on the upper cap and insert the 2. Fit the line head assembly to the gear shaft by using handles equally. Retighten the bolts. bolt (A). Hand tighten it
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7. Fuel ■ FUEL least one minute. As some oils may be difficult to agitate depending on oil ingredients, sufficient agi- WARNING tation is necessary for the engine to last long. Be • Gasoline is very flammable. Avoid smoking or careful that, if the agitation is insufficient, there is an bringing any flame or sparks near fuel. Make sure increased danger of early piston seizing due to ab- G to stop the engine and allow it cool before refuel- normally lean mixture. B ing the unit. Select o
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8. Operation STARTING ENGINE gine, place the product onto the ground in a flat clear area and hold it firmly in place so as to ensure that WARNING neither the cutting part nor the throttle come into con- tact with any obstacle when the engine starts. The cutting head will start rotating upon the engine starts. 1. Feed fuel into the fuel tank and tighten the cap se- curely. 2. Rest the unit on a flat, firm place. Keep the cutting head off the ground and clear of surrounding objects, as it will
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8. Operation ADJUSTING THROTTLE CABLE • The normal play is 1 or 2 mm when measured at the carburetor side end. Readjust with the cable adjuster as required. G B .04 in (1) (1 ~ 2 mm) METAL BLADE USAGE 1. Check the bolt to fasten the blade and be sure the bolt has no fault, and no abrasion. 2. Be sure that the blade and the holder have been fas- tened according to instruction and the blade turns smoothly without abnormal noise. (1) Cable adjuster ADJUSTING IDLING SPEED WARNING • The rotating pa
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8. Operation CUTTING METHOD WARNING (a)Use the front left side cutting. (b) Guide the blade from your right to left with it tilted CONTROLLING BLADE BOUNCE slightly to your left. •Kick out can cause serious personal injury. Carefully (c) When mowing a wide area, start working from your study this section. It is important that you understand left end to avoid interference of cut grass. what causes kick out, how you can reduce the chance (d) The blade may be seized by weeds if the engine of kic
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8. Operation CUTTING WORK (LINE HEAD USAGE) 2. You can avoid thrown debris by sweeping from your left to the right. WARNING 3. Use a slow, deliberate action to cut heavy growth. 1. Always wear eye protection such as safety The rate of cutting motion will depend on the material G goggles. Never lean over the rotating cutting head. being cut. Heavy growth will require slower action than B Rocks or other debris could be thrown into eyes will light growth. and face and cause serious personal injur
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9. Maintenance 9. Maintenance Every Every Every 25 50 100 Before System/components Procedure Note hours hours hours use after after after fuel leaks, fuel spillage wipe out ✔ fuel tank, air filter, fuel filter inspect/clean ✔✔ replace, if necessary see adjusting replace carburetor idle adjusting screw ✔ idling speed (p. 22) if necessary clean and readjust GAP: .025 in (0.6 ~ 0.7 mm) spark plug ✔ plug gap replace, if necessary cylinder fins, intake air cooling vent
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9. Maintenance IMPORTANT • Check the intake air cooling vent and the area around the cylinder cooling fins after every 25 • Note that using any spark plug other than those des- hours of use for blockage, and remove any waste ignated may result in the engine failing to operate prop- which has attached itself to the brushcutter. Note erly or in the engine becoming overheated and dam- that it is necessary to remove the engine cover G aged. shown in in order to be able to view the upper part B • T
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11. Troubleshooting guide Case 1. Starting failure CHECK PROBABLE CAUSES ACTION fuel tank → incorrect fuel → drain it and use correct fuel fuel filter → fuel filter is clogged → clean carburetor adjustment screw → out of normal range → adjust to normal range sparking (no spark) → spark plug is fouled/wet → clean/dry → plug gap is incorrect → correct (GAP: 0.6 ~ 0.7 mm) spark plug → disconnected → retighten Case 2. Engine starts but does not keep running/hard re-starting CHECK PROBABLE CAUSES ACT
