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26

10. Troubleshooting

8. Storage

9. Disposal

• Do not modify or disassemble the machine.

Modification or disassembly of the machine might
cause the machine to be damaged during operation,
or cause an unexpected accident due to the leakage
of fuel or malfunction of the machine.

• When you carry out inspection or maintenance of

the machine, keep the machine clear of fire (such as
a lit cigarette). Otherwise, the fuel might catch fire.

• Use ZENOAH’s genuine or dedicated tightening

parts (bolts, nuts and screws). Use of other
manufacturers’ parts might damage the machine, or
cause an unexpected accident due to parts falling
off while the machine is in operation.

WARNING

• When the symptoms in the left column do not improve after taking the measures in the right column, please contact the shop 

where you bought this product.

• For the measures marked with 

, please buy ZENOAH’s genuine parts at the shop where you bought this product.

PHENOMENON

The engine does not start.

The engine does not accelerate.

The engine stalls when the throttle 
is returned to its original position.

The engine rotation speed changes.

Abnormal vibration

Deterioration of fuel consumption

MAIN CAUSE

• Bad fuel (different quality, deterioration)

• Excessive sucking of fuel

• Clogging of the muffler exhaust vent

• Contamination of the spark plug electrodes, 

Short-circuit or breaking of a wire

• Bad fuel (different quality, deterioration)

• Clogging of the muffler exhaust vent

• The idling revolution speed is too low.

• Clogging of the fuel filter

• Deformation or damage of the blade

• Clogging of the air cleaner

• Blunt blade

• Bad lubrication of the flexible shaft

MEASURES

• Replace it with normal fuel (page 12).

• Open the choke, open the throttle full 

open, and pull out the rope repeatedly 
(page 14).

• Clean the muffler (page 24).

• Clean the electrodes or replace the plug 

(page 22

).

• Replace it with normal fuel (page 12).

• Clean the muffler (page 24).

• Readjust the idling adjustment screw 

(page 24,25).

• Clean or replace the fuel filter (page 22

).

• Replace the blade (page 19

).

• Clean the air cleaner (page 21).

• Replace the blade (page 19

).

• Supply grease (page 23).

Aged fuel is one of major 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.

When disposing your machine, fuel or oil for the
machine, be sure to allow your local regulations.

Содержание BK3420FL

Страница 1: ...BK3420FL 848G5C93A1 406 BRUSHCUTTER OWNER S MANUAL Before using our products please read this manual carefully to understand the proper use of your unit Keep this manual handy Caution...

Страница 2: ...This mark indicates instructions 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 l...

Страница 3: ...handle 20 Throttle lever 21 Right hand grip 22 Throttle wire 23 Wire clamp 24 Engine stopping switch 25 Flexible shaft 2 Symbols on the machine For safe operation and maintenance symbols are carved i...

Страница 4: ...or gale force winds or at any other times when weather conditions might make it unsafe to use this product f When using this product for the first time before beginning actual work learn to handling t...

Страница 5: ...e engine and check the throttle wire and other parts KICKBACK SAFETY PRECAUTIONS A dangerous reaction may occur when the spinning blade contacts a solid object in the critical area It is called Kick b...

Страница 6: ...utions below strictly 1 Keep the cutting blades clear of fances posts wires and rocks to prevent kickback and damage to the blades 2 When using your product do not grip other parts except the handles...

Страница 7: ...e slightly SE2 3 Align the safety lock hole of the joint with the hole of the main pipe screw the clamping bolt and fasten it tightly SE2 4 Tighten the fastening bolt of the joint and fix the main pip...

Страница 8: ...the shaft of the main pipe try to pull out the flexible shaft by hand to make sure the flexible shaft does not come off ADJUSTING THE PLAY OF THE THROTTLE WIRE If you bend the flexible shaft the amoun...

Страница 9: ...NTING THE HANDLE 1 Mount the loop handle on the main pipe in accordance with the serial number label Turn the grip and tighten it slightly then fasten the hanger plate together in the position shown i...

Страница 10: ...a left handed bolt and the outer holder 2 Put the blade on the blade rest plate with the blade surface on which there is writing facing toward the gear case then fit the hole of the blade to the proj...

Страница 11: ...de rest plate and the outer holder on the gear shaft correctly and stop their whirl with the accessory L shaped round rod 2 Screw the mounting bolt M7 left handed attached to the nylon cutter into the...

Страница 12: ...th or more may clog the carburetor or result in the engine failing to operate properly Put remained fuel into an air tight container and keep it in the dark and cool room Please ask for mixed gasoline...

Страница 13: ...ing the engine Fill the fuel tank to roughly 80 of its capacity If filled too full the fuel may leak from the tank cap while using this machine 1 Place the brushcutter to be refueled in a flat place o...

Страница 14: ...trode of the spark plug may become wet and the engine might not start If this happens open the choke set the throttle lever to the almost fully open position and pull out the starter rope repeatedly o...

Страница 15: ...foot on the frame and pull out the starter knob with your right hand OP4 Do not pull out the starter rope up to its end and do not let the knob jump out of the right hand otherwise it may not return...

Страница 16: ...gine speed before stopping the engine except in an emergency 1 Return the throttle lever to the idling position OP5 1 Idling 2 Push the engine stop switch until engine stops OP6 3 Close the fuel cock...

Страница 17: ...ake sure that there is no person or object near the machine Then holding the front part on the blade side of the handle of the main pipe with your left hand hang the right shoulder belt on your right...

Страница 18: ...might cause grass weeds or twigs to be caught up in the blade It also wears down the clutch more quickly SELECTION OF BLADE When cutting branches and plants always use a saw blade and never use an eig...

Страница 19: ...lace The fuel pipe has been damaged Replace Broken or cracked Repair or replace The connecting part has become loose Repair or replace Cut off cracked discolored or deformed Replace The shaft has beco...

Страница 20: ...sawtooth blade BLADE OPTION Blade is not included In order to carry out cutting work safely be sure to check the blade before you begin and after you finish your work If you continue to use a blade w...

Страница 21: ...it after drying it completely When the air cleaner element has become deformed or damaged replace it with a new one Part No 1418 82130 If the air cleaner element becomes clogged the output of the engi...

Страница 22: ...e rotation speed might not increase or rotation fluctuations might occur 1 Rubber packing 2 Fuel filter SPARK PLUG Do not touch the spark plug with bare hands immediately after stopping the engine The...

Страница 23: ...the blade and the blade rest plate 2 Remove the plug beside the gear case and pour tube grease from the plug hole 3 Stop supplying the grease when all the old grease has been pushed out from the shaft...

Страница 24: ...uct is shipped from the factory but it might need to be readjusted according to changes in operation conditions e g changes in the stability of the engine air density etc When readjustment is necessar...

Страница 25: ...such as wrong start or insufficient output When storing the machine for a long time loosen the cap of the fuel tank slightly Excessive tightening of the cap might deform its packing over time 1 Brush...

Страница 26: ...n Deterioration of fuel consumption MAIN CAUSE Bad fuel different quality deterioration Excessive sucking of fuel Clogging of the muffler exhaust vent Contamination of the spark plug electrodes Short...

Страница 27: ...irection Counterclockwise from operator s view Type Single cylinder air cooling 2 cycle gasoline engine Displacement Volume cc 33 6 Fuel Used Lubricating oil mixed gasoline Lubricating Oil Used 2 cycl...

Страница 28: ...the blade correctly and make sure the connecting pin in the blade does not come out of place Cut branches of soft trees do not cut hard trees If abnormal or unusual vibration occurs stop work immedia...

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