15 37 95-79 (006) OWNER’S MANUAL BRUSHCUTTERS BK3410FL / BK3410FL-S BK4310FL / BK4310FL-S Caution • Before using our brushcutter, please read this manual carefully to understand the proper use of your unit. • Keep this manual handy.
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. ■ NOTES ON TYPES OF WARNINGS IN THE MANUAL WARNING This mark indicates instructions which must be followed in order to prevent accidents which could lead to serious bodily injury or death.
1. Warning labels on the machine 15m (50ft) (1) (2) (3) (4) (5) (6) (7) (1) Read owner’s manual before operating this machine. (2) Wear head, eye and ear protection. (3) Wear foot protection. (4) Wear gloves. (5) Beware of thrown objects. (6) Warning / Attention (7) Keep all children, bystanders and helpers 15 meters away from the machine.
2. Symbols on the machine For safe operation and maintenance, symbols are carved in relief on the machine. According to these indications, please be careful not to take a mistake. (a) The port to refuel the "MIX GASOLINE" Position: FUEL TANK CAP (b) The direction to close the choke Position: AIR CLEANER COVER (c) The direction to open the choke Position: AIR CLEANER COVER 3.
4. Safety precautions 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.
4. Safety precautions to sound level and hours of operations for the product. ■ BEFORE STARTING THE ENGINE 1. The area within a perimeter of 15 m 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.
4. Safety precautions serious burns or electrical shock. ■ IF SOMEONE COMES 1. Guard against hazardous situations at all times. Warn adults to keep pets and children away from the area. Be careful if you are approached. Injury may result from flying debris. 2. If someone calls out or otherwise interrupts you while working, always be sure to turn off the engine before turning around. ■ MAINTENANCE 1.
4. Safety precautions This contact causes the blade to stop for an instant and then suddenly move or ”bounce” away from the object that was hit. The operator can lose control of the unit and the blade can cause serious personal injury to the operator or any person nearby if the blade contacts any part of the body. 2. How you can reduce the chance of blade thrust: (1) Recognize that blade thrust can happen. By understanding and knowing about bounce, you can help eliminate the element of surprise.
5. Set up WARNING • Assemble each part correctly. Wrong assembly might cause an accident. • If you cannot do the assembling yourself, consult the shop where you bought this product. ■ ATTACHING THE SHOULDER STRAP (SE1) 1. Pass the ring of the shoulder strap through the hook(A) and fix it by the bolt securely. 2. Set the hook(B) of each shoulder strap to the D-rings on the frame.
5. Set up 2. Attach the lever as shown in the picture and screw it securely. (SE6) SE8 SE6 (1) Throttle lever (2) Hole (3) Throttle cable (4) Screw (5) Nut (1) Loop handle (2) Screw (3) Washer (4) Nut (5) Throttle lever (6) Right hand grip WARNING Stop tightening the screws when the gap A becomes zero. ■ ATTACHING THE DEBRIS GUARD WARNING Never use the machine without the debris guard. ■ ADJUSTING THROTTLE CABLE • Proper play of the throttle cable is 1–2mm.
5. Set up (Note that this is a left-turning screw.) ■ LINE HEAD (SE11) (SE13) IMPORTANT SE10 (1) Bar (2) Holder B (3) Holder A 2. Attach the cover (SE11,(11)) and fix it with screw. 3. Insert blade between cutter holder A and cutter holder B. (SE11) 4. Attach cover and spring washer. (SE11) 5. Screw the bolt to fix them into place. (SE11) Tightening torque: 14.7~19.
6. Fuel WARNING • Gasoline is very flammable. Avoid smoking or bringing any flame or sparks near fuel. • Wipe up all spills before starting the engine. • Make sure to stop the engine and allow it cool before refueling the unit. • Keep open flames away from the area where fuel is handled or stored. IMPORTANT • Never use oil for 4 cycle engine use or water cooled 2-cycle engine. • Never use "FUEL WITH NO OIL (RAW GASOLINE)". • Never use fuel laced with water.
7. Operation ■ REFUELING WARNING WARNING • • • • • Keep the throttle lever set always to the idling position when starting or stopping the engine, or Refuel the fuel tank in a flat place outdoors. Avoid moving the machine. If the throttle lever is set to smoking or bringing any flame or spark near the any position other than the idling position, the fuel, and stub out any cigarette. blade will begin to rotate, causing danger.
7. Operation position and pull out the starter rope repeatedly, or try the starting operation again after removing the spark plug and drying the electrode. 1. Open the fuel cock. (OP2) 2. Move the choke lever to the closed position. (OP2) OP2 (1) Fuel cock (2) Close (3) Open (4) Choke lever (5) Close (6) Open NOTE When restarting immediately after stopping the engine, move the choke lever to the open position. 3. Set the throttle lever to the idling position.
7. Operation OP6 OP8 (1) Area of the blade where the machine is prone to blade thrust WARNING ■ CUTTING OPERATION WARNING • 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. • Keep the debris guard attached in place at all times when the unit is operated. BLADE USAGE (OP7) 1. Always cut by guiding the head from your right to left. 2.
7. Operation 4. Use a slow, deliberate action to cut heavy growth. The rate of cutting motion will depend on the material being cut. Heavy growth will require slower action than will light growth. 5. Never swing the unit so hard as you are in danger of losing your balance or control of the unit. 6. Try to control the cutting motion with the hip rather than placing the full workload on the arm and hands. 7.
8. Maintenance ■ BLADE • Sharpen each cutting edge and make sure the bottom corner is rounded. (MA1) • Do not cool the blade with water in case of using grinder. It may cause cracks on blade. MA1 ■ REFILLING TRIMMING LINE (MA2) 1. For replacement line, use a diameter of .095in (2.4mm). The spool is capable for a line upto 20ft (6m) on the 4” head. Avoid using a larger line as it may cut down the trimming performance. MA2 of the spool. 4. Wind up the line in the correct direction as indicated on the spool.
8. Maintenance ■ FUEL FILTER MA5 WARNING When you mount or dismount the fuel filter, be careful not to damage the rubber packing. A damaged rubber packing or insufficient mounting of the fuel filter will cause fuel to leak. Check how heavily the fuel filter is clogged from the fueling port of the fuel tank every 25 hours of use. If the fuel filter is clogged with dust, empty the fuel tank, take the fuel filter out, and clean it with a brush, etc.
8. Maintenance on the side where the main pipe is installed, and mount the plug in its original position. 4. Wipe off the pushed-out grease, and mount the blade and the blade rest plate in their original positions. MA7 (1) Plug (2) Blade rest plate 2. Further tighten all screws, bolts and fittings. 3. Make sure that no oil or grease remains between the clutch lining and the drum. If you see any there, wipe it off using oil-free, lead-free gasoline. 4.
8. Maintenance The engine revolution speed increases when you turn the idling adjustment screw clockwise, and decreases when you turn it counterclockwise. blade, and keep the machine in a safe place away from heat and humidity. MA12 Standard idling revolution speed: 2,300 to 2,700 rpm MA11 (1) Idling adjustment screw (2) Rotation increases. (3) Rotation decreases. ■ MAINTENANCE BEFORE LONG-TERM STORAGE WARNING This machine is highly inflammable.
9. Trouble shooting MAIN CAUSE PHENOMENON The engine does not start. MEASURES • Bad fuel (different quality, deterioration) • Replace it with normal fuel (page 12). • Excessive sucking of fuel • Open the choke, open the throttle full open, and pull out the rope repeatedly (page 13,14). • Clogging of the muffler exhaust vent • Clean the muffler (page 18,19). • Contamination of the spark plug electrodes, • Clean the electrodes or replace the plug (page 18✩).
Limited warranty Should any failure occur on the product under normal operating conditions within the applicable warranty period, the failed part will be replaced or repaired free of charge by a ZENOAH authorized dealer. OWNER/OPERATOR MANUAL FOR PROPER USE AND MAINTENANCE OF THE UNITS ACCIDENT MISHANDLING, ALTERATION, ABUSE, IMPROPER LUBRICATION, USE OF ANY PARTS OR ACCESSORIES OTHER THAN THOSE SPECIFIED BY THE COMPANY, OR OTHER CAUSES BEYOND THE COMPANY'S CONTROL.
To Dealer: Please complete the following form at time of sale. Equipment No.: Product Model: ZENOAH BK3410FL BK4310FL BK3410FL-S BK4310FL-S Date of Purchase: D / M / Y Engine No.: Use: Private Professional Rental Name: Purchaser: Address/Phone: Name: Dealer: Address/Phone: To Purchaser: When your unit requires any repair, please bring or send it to the dealer with this sheet attached.
