BC251 848JBZ93A1 (704) G B OWNER’S MANUAL BRUSHCUTTER BC251 GB-1
BC251 DECLARATION OF COMFORMITY The undersigned manufacturer ZENOAH CO., LTD. 1-9, Minamidai, Kawagoe, Saitama, Japan The products referred to are: CATEGORY : BRUSHCUTTER MAKE : ZENOAH CO., LTD.
BC251 SAFETY FIRST 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 for this reason you are requested to read all such instructions carefully and follow them without fail. Contents 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12.
BC251 2. Specification Model Overall size (LxWxH) mm Dry weight kg Engine Model Displacement cm3 Fuel Carburetor Ignition system Spark plug Fuel tank capacity L Starter Clutch Reduction ratio Cutting head rotating direction BC251 1810 x 330 x 390 5.4 Zenoah GT25N4 25.4 Mixture (Gasoline 50 : Oil 1) (when using ZENOAH genuine oil) Diaphragm type Flywheel magneto (C.D.I.) NGK BPMR7A 0.62 Recoil starter Centrifugal type 1.
BC251 5. For safe operation 1. Read this manual carefully until you completely understand and follow all safety and operating instructions. 2. Keep this manual handy so that you may refer to it later whenever any questions arise. Also note, if you have any questions which cannot be answered herein, contact the dealer from whom you purchased the product. 3. Always be sure to include this manual when selling, lending, or otherwise transferring the ownership of this product. 4.
BC251 5. For safe operation BEFORE STARTING THE ENGINE 1. The area within a perimeter of 15 m (50 ft) of the person using the product should be considered a hazardous area into which no one should enter. If necessary, yellow warning rope, warning signs should be placed around the perimeter of the area.
BC251 5. For safe operation 6. Never touch the muffler, spark plug, or other metallic parts of the engine while the engine is in operation or immediately after shutting down the engine. Doing so could result in serious burns or electrical shock. 6. Under no circumstances should you ever take apart the product or alter it in any way. Doing so might result in the product becoming damaged during operation or the product becoming unable to operate properly. • IF SOMEONE COMES 1.
BC251 6. Set up INSTALLING HANDLE • Mount the handle to the shaft tube and clamp it at a location that is comfortable to you. (1) (1) About 28cm (11 inches) INSTALLING CUTTING ATTACHMENT GUARD • Attach the cutting attachiment guard with the bolts provided while inserting the spacer between the guard and the pipe. • Attach the guard skirt on the guard. INSTALLING CUTTING HEAD 1. Remove the plastic tube that is attached to the gear shaft. 2.
BC251 7. Fuel ■ FUEL • Gasoline is very flammable. Avoid smoking or bringing any flame or sparks near fuel. Make sure to stop the engine and allow it cool before refueling the unit. Select outdoor bare ground for fueling and move at least 3 m (10 ft) away from the fueling point before starting the engine. • The Zenoah engines are lubricated by oil specially formulated for air-cooled 2-cycle gasoline engine use.
BC251 8. Operation WARNING STARTING ENGINE WARNING • The cutting head will start rotating upon the engine starts. 1. Feed fuel into the fuel tank and tighten the cap securely. 2. Rest the unit on a flat, firm place. Keep the cutting head off the ground and clear of surrounding objects, as it will start rotating upon starting of the engine. 3. Push the primer pump several times until overflown fuel flows out in the clear tube.
BC251 8. Operation ADJUSTING IDLING SPEED G B (1) (1) Idle adjusting screw 1. When the engine tends to stop frequently at idling mode, turn the adjusting screw clockwise. 2. When the cutting head keeps rotating after releasing the trigger, turn the adjusting screw counter-clockwise. NOTE • Warm up the engine before adjusting the idling speed.
BC251 8. Operation CUTTING WORK (LINE HEAD USAGE) WARNING 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 cutting attachment 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 better results by not crowding the line into the cutting area.
BC251 9. Maintenance Maintenance, replacement, or repair of the emission control device and systems may be performed by any non-road engine repair establishment or individual.
BC251 9. Maintenance WARNING IMPORTANT • Make sure that the engine has stopped and is cool before performing any service to the machine. Contact with moving cutting head or hot muffler may result in a personal injury. AIR FILTER • The air filter, if clogged, will reduce the engine performance. Check and clean the filter element in warm, soapy water as required. Dry completely before installing. If the element is broken or shrunk, replace with a new one.
BC251 9. Maintenance GEAR CASE • 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 bolt of the grease nipple and the bolt opposite side of the grease nipple. Install new grease into the grease nipple to arrange for old grease to exit from the opposite side.
BC251 12. Troubleshooting guide Case 1. Starting failure CHECK fuel tank fuel filter carburetor adjustment screw sparking (no spark) spark plug → → → → → → PROBABLE CAUSES incorrect fuel fuel filter is clogged out of normal range spark plug is fouled/wet plug gap is incorrect disconnected Case 2.
