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OWNER’S MANUAL BRUSHCUTTERS BK3410FL BK4310FL 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 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. ■...
1. WARNING LABELS ON THE MACHINE (1) Read owner's manual before operating this machine. (2) Wear head, eye and ear protection. (3) Warning/Attention (4) Keep all children, bystanders and helpers 15 meters away from the brushcutter IMPORTANT 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 affix the new seal(s) in the required location(s).
3. SAFETY PRECAUTIONS ■ BEFORE USING THE MACHINE a. Read this owner's manual carefully to understand how to operate this unit properly. b. This product has been designed for use in cutting grass, and it should never be used for any other purpose .
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3. SAFETY PRECAUTIONS ■ WORKING GEAR AND CLOTHING a. When using your brushcutter, you should wear proper clothing and protective equipment as follows. (1) Helmet (2) Protection goggles or face protector (3) Thick work gloves (4) Non-slip-sole work boots (5) Ear protectors b.
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3. SAFETY PRECAUTIONS ■ THINGS TO CHECK BEFORE USING YOUR BRUSHCUTTER a. Before beginning work, look around carefully to get a feel for the shape of the land, or grass to be trimmed, and whether or not there are any obstacles which might get in the way while working, and remove any obstacles which can be cleared away.
3. SAFETY PRECAUTIONS ■ KICKBACK SAFETY PRECAUTIONS • A dangerous reaction may occur when the spinning blade contacts a solid object in the critical area. It is called Kick back. As a result, the operator can lose control of the unit which can cause serious or fatal injury.
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When replacing blade or any other parts or when replacing the oil or any lubricants, always be sure to use only ZENOAH products or products which have been certified by ZENOAH for use with the brushcutter.
4. SET UP ■ 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. (A) UPPER SIDE (B) LOWER SIDE (1) Hook (A)
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4. SET UP try inserting it again. • Once the liner has been inserted, pull on the liner to make sure that the stopper is properly engaged. ■ ATTACHING THE THROTTLE CABLE WARNING After fitting the wire, check if the wire sleeve is correctly fitted to the wire stopper.
4. SET UP ■ ADJUSTING THROTTLE CABLE • Proper play of the throttle cable is 1–2mm. Place the throttle lever to the lowest speed position (i.e. fully released status). Pull the throttle cable lightly with fingers to check its play. Readjust the position of cable adjuster if the play is too large or too small.
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WARNING • Never attach nor remove a cutting blade while the engine is running. • Use ZENOAH genuine cutting blade for exchange. • Wear sturdy gloves for attaching/removing a metallic cutting blade to avoid injury. 1. Loosen the nut, remove holder A and holder B from the gear case.
2-cycle engine oil into a mixing container in accordance with the following ratios and then shaking to mix well. Mixing ratios: When using Zenoah genuine 2-cycle oil (FC grade): 50:1 (100 ml of oil for every 5 liters of gasoline) When using commercially available 2-cycle oil (FB...
6. OPERATION ■ STARTING THE ENGINE 1. Pour the fuel and fasten the fuel cap. (OP1) (1) Cap (2) Fuel tank IMPORTANT • Make sure that the cap is firmly shut and there is no fuel leak. • Wipe out the spilled fuel. 2.
6. OPERATION ■ STOPPING THE ENGINE 1. Return the throttle lever to the idling position. 2. Push the engine switch button. (OP5) 3. Close the fuel cock. (1) Engine switch button ■ EQUIPPING THE SHOULDER STRAP (OP6) 1. Hold the main pipe with your right hand. Hang the left strap on your left shoulder.
6. OPERATION LINE HEAD USAGE • Always remember that the TIP of the line does cutting. You will achieve better results by not crowding the line into the cutting area. Allow the unit to trim at its own pace. 1. Hold the unit so the head is off the ground and is tilted about 20 degrees toward the sweep direction.
7. 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. ■ REFILLING TRIMMING LINE (MA2) 1.
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0.6~0.7mm 7. MAINTENANCE ■ GEAR CASE • Remove cutter, cutter holder A and plug and insert fresh lubricant. (MA4) (1) Holder A (2) Plug ■ FUEL STRAINER Drain the fuel from the tank. Remove the fuel strainer from the fuel tank and clean the fuel strainer. (MA5) (1) Fuel Strainer IMPORTANT A clogged fuel filter may cause poor acceleration of the...
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MA10 MA11 MA12 7. MAINTENANCE ■ FLEXIBLE SHAFT (MA8) 1. While pulling the stopper of the clutch housing upward, remove the liner from the unit. 2. Remove the flexible shaft from the liner, apply lubricant to the shaft, and insert the shaft back into the liner.
Counterclockwise (from operator' s view) Single cylinder air cooling 2-cycle gasoline engine 33.6 Lubricating oil mixed gasoline when using ZENOAH genuine oil (FC grade): 50:1 when using market oil (FB grade): 25:1 Sparking Circuit Primary Short (push button) BK4310FL Loop 315 x 270 x 410 1500 (ø26)
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