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GB-6

BK3420FL-EZ

the cutting attachment begins to 
rotate as soon as the engine is 
started  by  putting  the  throttle 
trigger  into  the  start  position. 
When starting the engine, place 
the product onto the ground in a 
flat clear area and hold it firmly 
in  place  so  as  to  ensure  that 
neither  the  cutting  part  nor  the 
throttle trigger come into contact 
with any obstacle when the en-
gine starts.

WARNING

Never  place  the  throttle  trigger 
into  the  high-speed  position 
when starting the engine.

3.  After starting the engine, check 

to make sure that the cutting at-
tachment stops rotating when the 
throttle is moved fully back to its 
original position. If it continues to 
rotate even after the throttle trig-
ger has been moved fully back, 
turn off the engine and take the 
unit to your authorized ZENOAH 
servicing dealer for repair.

 USING THE PRODUCT

IMPORTANT

Cut only materials recommended by 
the manufacturer. And use only for 
tasks explained in the manual. 

1.  Grip the handles firmly with both 

hands  using  your  whole  hand. 
Place  your  feet  slightly  apart 
(slightly  further  apart  than  the 
width of your shoulders) so that 
your weight is distributed evenly 
across both legs, and always be 
sure to maintain a steady, even 
posture while working.

2.  Keep cutting attachment below 

waist level. 

3.  Maintain the speed of the engine 

at the level required to perform 
cutting work, and never raise the 
speed of the engine above the 
level necessary.

4.  If the unit starts to shake or vi-

brate,  turn  off  the  engine  and 
check the whole unit. Do not use 
it until the trouble has been prop-
erly corrected.

5.  Keep all parts of your body away 

NOTE

Check and follow the local regula-
tions as 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 prod-
uct  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. When 
work is to be performed simulta-
neously by two or more persons, 
care  should  also  be  taken  to 
constantly look around or other-
wise check for the presence and 
locations of other people working 
so  as  to  maintain  a  distance 
between each person sufficient 
to ensure safety.

2.  Check the condition of working 

area  to  avoid  any  accident  by 
hitting hidden obstacles such as 
stumps, stones, cans, or broken 
glass.

IMPORTANT

Remove any obstacle before begin-
ning work.

3.  Inspect the entire unit for loose 

fasteners and fuel leakage. Make 
sure that the cutting attachment 
is  properly  installed  and  se-
curely fastened. 

4.  Be  sure  the  cutting  attachment 

guard  is  firmly  attached  in 
place. 

5.  Always use the harness. Adjust 

the  harness  for  comfort  before 
starting the engine. The harness 
should  be  adjusted  so  the  left 
hand  can  comfortably  hold  the 
handlebar  grip  approximately 
waist high.

 STARTING THE ENGINE

1.  Keep bystanders and animals at 

least 15 m away from the operat-
ing point. If you are approached, 
immediately stop the engine. 

2.  The product is equipped with a 

centrifugal clutch mechanism, so 

 5. For safe operation

01-BK3420FL-EZ_GB_207_三.indd   6

12.9.21   1:24:12 PM

Summary of Contents for BK3420FL-EZ

Page 1: ...L BRUSHCUTTER 115 49 27 38 207 Before using our products please read this manual carefully to understand the proper use of your unit Keep this manual handy G B Original Language 01 BK3420FL EZ_GB_207...

Page 2: ...3 Wire clamp 24 Engine stopping switch 25 Flexible shaft SAFETY FIRST Instructions contained in warnings within this manual marked with a symbol concern critical points which must be taken into consid...

Page 3: ...or s view Engine Displacement cc 33 6 Fuel Used Lubricating oil mixed gasoline Lubricating Oil Used 2 stroke engine oil Mixing rate GASOLINE 25 OIL 1 When using market oil JASO FB grade oil or ISO L E...

Page 4: ...oduct to order new labels and affix them in the re quired location s Warning Attention 1 Read owner s manual before operating this machine 2 Wear head eye and ear protection 3 Don t remove the debris...

Page 5: ...hen the ground is slippery or when you can t maintain a steady posture 2 At night at times of heavy fog or at any other times when your field of vision might be limited and it would be difficult to ga...

Page 6: ...rn off the engine and check the whole unit Do not use it until the trouble has been prop erly corrected 5 Keep all parts of your body away NOTE Check and follow the local regula tions as to sound leve...

Page 7: ...tachment other than those bear ing the ZENOAH mark and rec ommended for the unit 6 Under no circumstances should you ever take apart the product or alter it in any way Doing so might result in the pro...

Page 8: ...ss only Do not let the blade contact materials it cannot cut such as hard woody vines and brush or rocks fences metal etc 3 Be extra prepared for blade thrust if you must cut where you cannot see the...

Page 9: ...the joint and fix the main pipe firmly Tightening torque 4 9 to 7 8 N m 0 5 0 8 kg m 5 Screw the throttle lever mounting screw and fasten it tightly 1 Screw M5xL18 5 Throttle lever 2 Clamping bolt M5x...

Page 10: ...G Do not use this machine without the debris guard Fit the top of the debris guard to the gear case install the debris guard on the main pipe with the accessory clamp and tighten the debris guard even...

Page 11: ...e 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 project ing part of the blade...

Page 12: ...t 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 gear...

Page 13: ...ay be difficult to agitate depending on oil ingredients sufficient agita tion is necessary for the engine to last long Be care ful that if the agitation is insufficient there is an in creased danger o...

Page 14: ...ORTANT If you repeat the starting operation while leaving the choke closed the electrodes of the spark plug might become wet and prevent starting If this happens try the starting operation again after...

Page 15: ...stones etc might damage the blade and driving unit or bend the main pipe SHOULDERING THE MAIN BODY OF THE UNIT 1 Start the engine and allow it to warm up Then return the throttle lever to the idling p...

Page 16: ...ause grass weeds or twigs to be caught up in the blade It also wears down the clutch more quickly SELECTION OF BLADE WARNING When cutting branches and plants always use a saw blade and never use an ei...

Page 17: ...ipe 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 become loose Repair...

Page 18: ...ORTANT The idling engine speed is adjusted when this prod 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 o...

Page 19: ...r the fuel filter is damaged replace it with a new one Part No Z4551 85100 IMPORTANT If the fuel filter is clogged the engine rotation speed might not increase or rotation fluctuations might occur 1 R...

Page 20: ...life span of the machine Be sure to check the blade before or after using the machine If anything is wrong with the blade replace it with a new one or sharpen it again MAINTENANCE BEFORE LONG TERM STO...

Page 21: ...n the choke open the throttle full open and pull out the rope repeatedly page 14 Clean the muffler page 18 Clean the electrodes or replace the plug page 19 Replace it with normal fuel page 13 Clean th...

Page 22: ...PART ANY REPLACEMENT PART THAT IS EQUIVALENT IN PERFORMANCE AND DURABILITY MAY BE USED IN NON WARRANTY MAINTENANCE OR REPAIRS AND SHALL NOT REDUCE THE WARRANTY OBLIGATION OF THE COMPANY THE COMPANY I...

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