VARI KC-435 Instructions For Use Manual

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VARI KC-435 Instructions For Use Manual | Manualzz
Brush cutter / Trimmer
KC-435
Instructions for use
EN English – Translation of the original instructions for use
KC-435
Content
1 EN Instructions for use
3
EN Basic information
Ask your dealer to unpack the machine and provide you with instructions as a part of the pre-sale
services!
EN Type
KC-435
EN Engine type
EN Stick the identification plate here:
HONDA GX35
EN Identification number
1
10052_____.____.____
EN Serial No./year of mnf.
EN Date of sale/delivery
EN Supplier (stamp)
•
1
It is recommended to make a copy of this page for a case that the original instructions for use will be
lost or stolen.
Fill in the number from the type label or stick the identification plate.
2
KC-435
1 EN Instructions for use
Content
1 EN Instructions for use
1.1
Introduction................................................................................................................................. 5
1.1.1
1.2
Basic notices ........................................................................................................................ 5
Operation safety .......................................................................................................................... 5
1.2.1
Safety instructions ............................................................................................................... 5
1.2.2
Noise and vibration values .................................................................................................. 7
1.2.3
Safety pictographs ............................................................................................................... 8
1.3
Basic information......................................................................................................................... 8
1.3.1
1.3.1.1
1.3.2
1.4
Technical data.................................................................................................................. 8
Description of the machine and its parts ............................................................................ 9
Instructions for use...................................................................................................................... 9
1.4.1
Assembly of the machine .................................................................................................... 9
1.4.1.1
Handlebar assembly ...................................................................................................... 10
1.4.1.2
Cutting tool cover assembly .......................................................................................... 10
1.4.1.3
Installing the blade ........................................................................................................ 10
1.4.1.4
Installing the nylon head ............................................................................................... 10
1.4.1.5
Mounting and adjustment of the harness..................................................................... 11
1.4.2
Preparation before use...................................................................................................... 11
1.4.2.1
Balancing the machine .................................................................................................. 11
1.4.2.2
Adding the fuel .............................................................................................................. 11
1.4.2.3
Adding the motor oil ..................................................................................................... 12
1.4.2.4
Before starting ............................................................................................................... 12
1.4.3
Starting and stopping the engine ...................................................................................... 12
1.4.3.1
Cold start ....................................................................................................................... 12
1.4.3.2
Warm start .................................................................................................................... 13
1.4.3.3
Switching off the engine ................................................................................................ 14
1.4.4
1.5
Machine use ........................................................................................................................ 8
Working with the machine ................................................................................................ 14
1.4.4.1
Using the nylon head ..................................................................................................... 14
1.4.4.2
Using the grass blade..................................................................................................... 15
Maintenance, care..................................................................................................................... 15
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KC-435
1.5.1
Refilling the cutting string ................................................................................................. 16
1.5.2
Sharpening the cutting blades of the grass blade ............................................................. 17
1.5.3
Maintenance and adjusting of the engine ........................................................................ 17
1.5.4
Angle gearbox lubrication ................................................................................................. 17
1.5.5
Servicing intervals.............................................................................................................. 18
1.5.6
Problems and their solutions ............................................................................................ 19
1.5.7
Washing and cleaning the machine................................................................................... 19
1.6
Transportation and storing........................................................................................................ 20
1.6.1
Transportation ................................................................................................................... 20
1.6.2
Storing ............................................................................................................................... 20
1.6.2.1
Tilting the handlebars .................................................................................................... 20
1.6.3
Storing the fuel .................................................................................................................. 20
1.6.4
Putting the machine into operation after longer storing .................................................. 21
1.6.5
Disposal of the wrapping and the machine after the end of its life time ......................... 21
1.6.6
Instructions for ordering spare parts ................................................................................ 21
1.7
Address of the manufacturer .................................................................................................... 21
The manufacturer reserves the right to make technical modifications and innovations which have no influence on the
function and safety of the machine. These changes needn’t be shown in these instructions for use. Printing errors reserved.
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KC-435
1.1 Introduction
Dear customer and user!
Thank you for the confidence you demonstrated by purchasing our product. You have become the owner of a
machine from a broad range of gardening, farming, small agricultural and municipal machinery, produced by VARI, a.s.
The brush cutter/trimmer is a light and compact machine for cutting grass for example along kerbs, around trees,
under fences, in ditches and at other places that are not accessible for a common lawnmower. The KC-435 brush
cutter/trimmer is equipped with the silent four-stroke HONDA GX 35 engine. Its advantages (compared with two-stroke
brush cutter) are lower noise, engine revolutions, fuel consumption and emissions as well as easier starting. The KC-435
brush cutter/trimmer is a light machine, it is easy to operate it and it is equipped with a sophisticated anti-vibration system.
Working with it is very comfortable and pleasant.
Please read through this user manual thoroughly. The product will service you reliably for many years to come,
provided that you follow the instructions provided.
1.1.1 Basic notices
The user is obliged to familiarize him(her)self with this user manual and follow all operating instructions to ensure
that no injury or damage to the user or possibly other persons occurs.
The safety instructions provided in this user manual do not include all possibilities, conditions, and scenarios that
may arise in practise. Contributing safety factors, such as common sense, caution and care, are not included in this manual
but it is assumed that every operator or maintenance worker, who operates the machine, shall apply them.
The machine must only be used by persons who are physically and mentally healthy. Professional use of this
machine requires training of operating personnel in its safe use and operation, and a log of such training should be
administered. The owner must also adopt “categorization” of work according to corresponding national legislation.
2
If any of the information provided to you in the manual is unclear, contact your retailer or contact the machine
3
manufacturer directly.
The user manuals included with this machine are considered an integral component. They must always be available
for reference and located in an accessible, safe, and protected area to prevent their damage. If the machine is re-sold to
another individual, the user manuals must be provided to the new owner. The manufacturer waives all responsibility for
any risk, harm, emergency, or injury incurred during operation of the machine if the above specified conditions are not
fulfilled.
The manufacturer shall not be liable for any damage incurred by unauthorized use, improper maintenance, and
damage incurred by any modification of the machine without the consent of the manufacturer.
It is particularly important to observe the safety guidelines to prevent personal injury or damage to the
environment or property. These instructions are marked in the user manual by the following cautionary safety symbols:
If you see this symbol in the manual, carefully read through the following information!
This international safety symbol indicates important information, relating to safety. When you see this
symbol, pay careful attention to personal harm or harm to others and carefully read the information that
follows.
!
Table 1: Symbols
1.2 Operation safety
The brush cutter/trimmer is designed to ensure safe and reliable operation when following instructions are
followed. Before you start to operate the machine, read this user manual carefully and familiarize yourself thoroughly with
its operation in order to prevent serious injuries or damage of the machine. If the maintenance and operation principles
mentioned in these Instructions for use are not observed in any way as well as if original spare parts and accessories are not
used and/or any unauthorized modifications are done, the warranty claim will expire.
1.2.1 Safety instructions
!
2
3
The machine operator must be 18 years or older. He/she must read through the machine operating
manuals and adhere to general work safety precautions.
Fill in the retailer’s address into the table at the beginning of this manual (if not already completed by the retailer).
The manufacturer’s address is specified at the end of this manual
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KC-435
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Read and study all instructions carefully. Familiarize yourself well with control elements and with
principles of their correct usage. Learn the correct way to stop the engine quickly.
Use the brush cutter/trimmer only for the purposes it is intended for, i.e. for cutting grass using the nylon
string grass blade as finishing work in places hardly accessible for mowers. Any other usage could be
dangerous and could result in damaging the machine or injuring the operator.
Never let children and persons who are not familiar with these regulations work with the machine or
manipulate it in any way. Local legal regulations may limit the minimum age of the operator.
Don’t use the brush cutter/trimmer if:
− there are people (pay special attention to children) or domestic animals in near vicinity;
− the operator is under the influence of alcohol, medication or if he/she ingested substances known for
affecting the judgment or quick response ability.
Keep in mind that the owner or user of the machine is responsible for possible accidents and/or dangers
he/she exposes other people or their property to.
Always use sturdy shoes and appropriate working clothing (long trousers) when cutting. Never operate
the brush cutter/trimmer barefoot or wearing sandals! Use protective aids for sight and hearing and work
in protective gloves.
Carefully check the grass area where the brush cutter/trimmer shall be used and remove all objects which
could possibly be catapulted by the brush cutter (stones, branches, wires, tins, etc.)
Warning!!!!
− The engine fuel is highly flammable.
− Store the fuel only in containers intended for this purpose.
− Refuel only at open or well-ventilated area. Do not smoke or handle open fire during refuelling and
any other handling with the fuel.
− Refuel only when the engine is in still stand. Never open the fuel tank and refuel when the engine is
running or hot.
− If the petrol is spilled, don’t start the engine. Remove the brush cutter/trimmer from the area where
the fuel was spilled and prevent making any source of ignition. Continue using the brush
cutter/trimmer after the spilled fuel is evaporated and the fuel fumes are dispersed.
− Safely close the caps of the fuel tank and the fuel container.
If the exhaust silencer is damaged, replace it.
Always inspect the brush cutter/trimmer carefully before using it, especially the cutting tool blade; check
whether the connection of safety covers is in good condition whether the cutting tools are not worn out
or damaged. Always replace worn out and/or damaged blades and safety covers.
Make sure that the control handle and the harness are in the right position and that the brush
cutter/trimmer is properly balanced. The proper balancing is described lower in the instructions for use.
The idle revolutions have to be set in such a way that the cutting tool is not running at idle revolutions.
When using the grass blade, always put the safety cover on the blade when the work is finished.
− Move the engine switch to the position STOP and take off the spark plug cap.
− Use protective gloves during the work.
The exhaust fumes contain carbon monoxide, a toxic, colourless and odourless gas. Inhaling this gas can
cause loss of consciousness or even death. Don’t start the engine in closed rooms. Make sure that there
are sufficient ventilation and access of fresh air in the place where the engine is started.
Cut only at daylight or under good artificial lighting.
If possible, avoid using the brush cutter/trimmer in wet grass as it is slippery.
When working with the brush cutter/trimmer, always pay attention to the safe distance between the
operator and the cutting tool when the engine is running; except for adjusting the engine revolutions, the
operator must always be in safe distance behind the handlebar.
Always walk, never run when working with the brush cutter/trimmer.
When cutting near building, always go in the direction from the buildings, not towards them; if an object
gets catapulted, property could be damaged.
Always keep stable position when cutting grass on a slope and always cut across the slope (alongside the
contour line), never up and down.
When moving on a slope, be especially cautious when changing the moving direction.
Never adjust the engine in such a way that the working revolutions exceed the allowed limit.
Before starting the engine, see to it that there is no one and no undesirable objects in the space of the
cutting tool. Make sure that the brush cutter/trimmer is lying on the ground in a stable position.
Pay attention to all safety rules when starting the engine, so that no persons get injured.
Stop the engine and disconnect the spark plug in following cases:
− before performing any activities in the space of the cutting tool
− before starting any service work, checking and cleaning the brush cutter/trimmer
6
KC-435
when any persons or animals appear nearby
the engine can only be running when adjusting the carburettor or the engine revolutions
if a foreign object is hit. Check whether the brush cutter/trimmer is damaged; repair it when
necessary and continue the work only after it is put into normal condition.
− if the brush cutter/trimmer shows unusual vibrations (find out and remove the cause of the
vibrations immediately).
Stop the engine in following cases:
− always when you leave the brush cutter/trimmer unattended
− before every refuelling
− during every transportation or carrying.
All nuts, bolts and screws have to be properly tightened, so that the device is in safe and working order.
Regular maintenance is the basic condition for ensuring the safety of the operator and keeping the brush
cutter/trimmer in working order as well as preserving its perfect performance.
For safety reasons, don’t use the machine with worn out or damaged parts. The parts have to be replaced,
not repaired. Use original spare parts as a replacement (the blades should always be marked with the
proper symbols). Spare parts of insufficient quality can damage the device and can put your safety in
danger. The warranty claim will expire if non-original spare parts are used.
Use strong working gloves when dismounting or installing the cutting tool.
Never store the device with petrol in its tank inside a building where the fumes can get in touch with open
fire, spark or a source of high temperature.
Store the machine in a dry, clean place, out of reach of children.
Let the engine cool down before storing the machine in a closed space.
Make sure that remains of grass, leaves and excessive grease are removed from the brush cutter/trimmer
and especially from the engine, exhaust silencer and ventilation fins as well as from the place where
reserve petrol is stored. There is a risk of fire.
It is necessary to install the safety cover on the cutting blade for transport and before storing.
Drain the fuel in well-ventilated space only; the engine has to be cold. Don’t smoke and avoid access with
open fire.
To protect the environment, follow generally valid regulations when handling oil substances.
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1.2.2 Noise and vibration values
With the 3-teeth blade / with the nylon head
Emission level of acoustic pressure A at operator’s place
4
Average emission level of acoustic pressure A for idle running (LpAId)
76 dB
76 dB
Average emission level of acoustic pressure A for running w/o load (LpARa)
98,2 dB
97,8 dB
Equivalent emission level of acoustic pressure A (LpAeq)
95,0 dB
95,0 dB
Declared equivalent emission level of acoustic pressure A (LpAeq)
99,0 dB
99,0 dB
111 dB
113 dB
Acoustic power
5
Guaranteed level of acoustic power (LWA)
6
Vibrations transmitted on the operator hands
-2
Average overall vibration values for idle running (ahv)
1,75 ms
Average overall vibration values for running without load (ahv)
6,3 ms
Equivalent overall vibration values (ahv.eq)
4,6 ms
Declared overall vibration value (ahvd)
6,9 ms
-2
1,4 ms
-2
4,35 ms
-2
-2
3,2 ms
-2
4,8 ms
-2
-2
Table 2: Noise and vibration values
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Due to exceeded recommended values of noise and vibrations you should follow these instructions
when working with the machine:
4
Measured according to CSN EN ISO 11201 and CSN EN ISO 22868
According to the Directive 2000/14/EG
6
Measured according to CSN EN ISO 20643 and CSN EN ISO 22867
5
7
KC-435
Protect the hearing with suitable protective aids according to EN 352-1 (shell hearing protectors) or EN
352-2 (plug hearing protectors). Ask your dealer for these aids.
Interrupt the work with the machine after no more than 20 minutes with breaks of at least 10 minutes.
The operator can’t be exposed to effects of any other sources of noise and/or vibrations during these
breaks.
1.2.3 Safety pictographs
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The user is obliged to keep the pictographs on the machine legible and arrange their replacement if
they get damaged.
1 – Warning!!! Read the instructions for use
carefully
before
using
the
brush
cutter/trimmer.
2 – Always use sturdy shoes and appropriate
working clothing (long trousers) when cutting.
Never operate the brush cutter/trimmer
barefoot or wearing sandals! Use protective
aids for sight and hearing and work in
protective gloves.
3 – Warning!!! Danger of catapulted objects.
No other persons may occur in the working
space of the brush cutter/trimmer and in its
dangerous vicinity of 15 m.
4 – The brush cutter/trimmer is designed for
using only grass blades and nylon head.
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The brush cutter/trimmer is not
adapted for using saw blades.
5 – Max. allowed revolutions of the cutting
tool.
Table 3: Safety pictographs
1.3 Basic information
1.3.1 Machine use
The brush cutter/trimmer is intended to cut grass using the nylon string or grass blade as finishing work. The nylon
string is intended to cut in hardly accessible areas or places around various obstacles where you can get with a lawn mower.
The three-tooth grass blade is intended to cut grass in hardly accessible places, high and overgrown vegetation and even
wooden sprouts with a diameter of up to 2 cm.
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It is forbidden to remove any protective devices and covers from the machines.
The brush cutter/trimmer can’t be used to cut shrubbery, trees, prune trees, etc.
1.3.1.1 Technical data
KC-435 brush cutter/trimmer
Unit
Value
Dimensions (L x W x H)
mm
1890 x 700 x 500
kg
9
Weight (without fuel, cutting accessories and safety cover)
Turning direction (from the operator’s view)
Max. revolutions of the spindle
7
3-teeth blade (blade Ø x thickness / attachment hole Ø)
Length of the nylon cutting string Ø 2,4 mm
Area capacity of the machine
7
8
to the left
-1
min
7730
mm
255 x 1,4 / 25,4
m
6
2
-1
m .h
100-300
Real revolutions without load.
8
KC-435
Honda GX 35 engine
3
Displacement
cm
Bore / Stroke
mm
Max. engine revolutions
35,8
39 x 30
-1
10000
-1
3100 ± 200
min
Engine revolutions at idle running
min
Valve train system
OHC
Cooling system
air
Ignition system
transistor
-1
Power (according to ISO 8893)
kW (HP)
1,0 (1,3) / 7000 min
Power (according to SAE J1995)
kW (PS)
1,2 (1,6) / 7000 min
Fuel tank volume
l (litre)
0,65
Oil volume in engine
l (litre)
0,1
g/kWh (l/h)
360 (0,71)
Fuel consumption
Spark plug
-1
NGK CMR5H
Table 4: Technical information on KC-435
1.3.2 Description of the machine and its parts
Brush cutter/trimmer:
9
1) Honda GX35 engine
2) Blade
3) Angular gearbox
4) Cutting tool cover
5) Shaft tube
6) Springing
7) Accelerator lever
8) Switch
9) Handle
Brush cutter/trimmer
Contents of the packing:
10) Brush cutter/trimmer
11) Cutting tool cover
12) Cover brim
13) Nylon head
14) Blade
15) Cap
16) Nut
17) Tubular box spanner with
Torx screwdriver
18) Hex key
Instructions for use – not in
the picture
Harness – not in the picture
Contents of the package
1.4 Instructions for use
1.4.1 Assembly of the machine
8
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Ask your dealer to unpack the machine and provide you with instructions as a part of the pre-sale
services!
The right and left sides of the machines are meant as viewed from the operator’s place.
The area capacity of the machine depends on the type of the cut vegetation.
Description of the engine – see the separate instructions for use, part of the machine
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KC-435
1.4.1.1 Handlebar assembly
Put the handlebars (1) on
the anti-vibration element
(2) and screw it using bolts
(3) and washers (4).
Remove the cable cover (5)
from the anti-vibration
element (1), pass the cables
(6) and put the cover back
on
the
anti-vibration
element.
The cables and the
accelerator bowden cable
must pass freely and
smoothly.
1.4.1.2 Cutting tool cover assembly
Screw the cover (8) on the
cover holder (7) using four
M5x25 bolts (9), washers
(10, 11) and M5 nuts (12).
When using the nylon head,
install the cover brim (13)
on the cover (8).
When using the grass blade, the cover
brim (13) is not used.
1.4.1.3 Installing the blade
Remove the cover brim (13) from the cover (8).
Block the shaft by inserting the hex key (14) into the side openings
of the blade holder and the angular gearbox.
Put the friction washer (15), blade (16) and washer with cap (17)
on the shaft and screw the nut (18).
Attention! The shaft and the nut are equipped with a left-handed
thread!!
Screw the nut tight using the tubular box spanner (19).
1.4.1.4 Installing the nylon head
Install the cover brim (13) on the cover (8).
Block the shaft by inserting the hex key (14) into the side openings
of the blade holder and the angular gearbox.
Put the friction washer (15) on the shaft and screw the nylon head
(20).
Attention! The shaft and the nylon head are equipped with a lefthanded thread!!
Tighten the nylon head well with your hand.
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KC-435
1.4.1.5 Mounting and adjustment of the harness
For safety and comfort of the operator it is very important to
properly adjust the harness for the particular figure, so that it is
possible to operate the brush cutter/trimmer with the highest
possible comfort and the hanging brush cutter/trimmer is
properly balanced.
The brush cutter/trimmer is delivered with a comfortable harness
(21) for both shoulders.
Put on the harness and secure it with the buckle (22).
Adjust the length of each strap using the tightening buckles (23).
1.4.2 Preparation before use
1.4.2.1 Balancing the machine
Put on the harness in such a way that the quick-clamping clasp is
on your right hip.
Hang the brush cutter/trimmer on one of the four openings on the
anti-vibration element (1) using the snap-hook. Change the
openings until the brush cutter/trimmer is balanced.
Grasp the brush cutter/trimmer in such a way that the cutting tool
is parallel to the ground when holding the machine with both hands.
The optimal position is reached when just imperceptible effort of
the hands is needed to lift the cutting tool above the ground.
If the cutting tool is falling to the ground, it is necessary to move
the snap-hook for one opening forward. On the contrary if the
cutting tool tends to go up, it is necessary to move the snaphook for one opening backwards.
It is necessary to check the machine balance when the cutting
tool is mounted and the fuel tank is half-full.
1.4.2.2 Adding the fuel
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Use unleaded or low-leaded petrol commonly used for motor vehicles – min. octane number 91. It is
recommended to use the petrol marked BA-95 as it is the most used and most often available petrol.
The unleaded fuel reduces the quantity of the sediments in the combustion chamber. If the fuel level is
low, refuel. Don’t overfill the tank.
Never use petrol mixed with oil, dirty or contaminated. Avoid dirts, dust and water getting into the fuel
tank.
If the machine shall be stored for more than 3 weeks, drain the remaining fuel from the tank and
remove the petrol from the carburettor – the fuel goes stale.
The pressure inside the fuel tank naturally rises with the rising temperature of the surroundings. Be
careful when opening the fuel tank, so that the fuel doesn’t squirt out. The petrol can should be stored
in a cold place and it can’t get in touch with direct sunshine in any case.
The petrol is very easily ignitable and explosive.
Refuel in a well-ventilated space and when the engine is turned off. Don’t smoke and avoid access with
open fire during refuelling and at places where the fuel is placed.
Don’t overfill the tank (don’t fill it up to the tank edge) and close the tank when the refuelling is
finished, so that the tank cap is well fastened.
Pay attention not to spill any petrol. The petrol fumes as well as the spilled petrol can ignite. If the
petrol is spilled, it is unconditionally necessary to dry up the surroundings and let the petrol fumes
disperse.
Avoid repeated and/or longer contact with skin as well as inhalation of the fumes. Store petrol in
sufficient distance from children.
Stop the engine before each refuelling and clean surroundings of the fuel tank neck.
Use a suitable funnel for pouring the fuel, or use a can with a suitable pouring neck.
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KC-435
Place the brush cutter/trimmer in a working position to make the work easier.
Make sure that the brush cutter/trimmer is in a stable position, so that the fuel can’t be spilled
unintentionally.
10
See detailed information in the instructions for use of the engine .
1.4.2.3 Adding the motor oil
If the engine operates with insufficient quantity of oil, it can be seriously damaged and the warranty
claim can’t be made.
Check the oil level before each starting; carry it out on a flat surface and with the engine being switched
off.
The operator is obliged to check the oil level before each engine starting according to the table of
11
required maintenance .
See detailed information in the instructions for use of the engine
12.
1.4.2.4 Before starting
Put on the prescribed clothing and safety aids, make sure that
the brush cutter/trimmer is equipped with all the prescribed
safety covers and that the cutting tool is properly tightened.
Make sure that the control handle is properly tightened.
Place the brush cutter/trimmer on a solid, free surface and
make sure that the operator is standing on a solid and flat
surface as well.
Check whether the spark plug is tightened.
1.4.3 Starting and stopping the engine
1.4.3.1 Cold start
The engine start is considered to be cold start if the engine hasn’t been running for more than 5 minutes longer
than 10 minutes ago.
If the air temperature is very high (summer day), it is possible that it won’t be necessary to use the choke.
10
The original instructions for use and its translation are a part of the machine.
See the instructions for use of the engine.
12
The original instructions for use and its translation are a part of the machine.
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KC-435
Move the engine switch (1)
to the position “START” (I).
Move the choke lever (2) to
the upper position (choke
on).
Push the fuel pump balloon
(3) under the carburettor
several times.
!
Pull the starter handle (4) slowly until you feel
a resistance.
Then tug quickly, so that the engine starts up.
After starting the engine move the choke lever
back to the lower position (choke off).
Don’t let the starter handle go back to the
engine uncontrolled. Return the starter
handle slowly to avoid starter cover damage.
Always start with pulling the handle quickly.
Otherwise the engine may not start up.
Never hold the brush cutter/trimmer on the
ground using your feet. The drive tube could
be bent; the machine would be damaged
without possibility to repair it and claim the
warranty.
The exhaust fumes contain carbon monoxide,
a colourless and odourless gas. Inhaling this
gas can cause loss of consciousness or even
death. Don’t start the engine in closed rooms.
Make sure that there are sufficient ventilation
and access of fresh air in the place where the
engine is started.
1.4.3.2 Warm start
The engine start is considered to be warm start if the engine has been running for more than 5 minutes during the
last 10 minutes before starting.
The procedure for the warm start is the same as for the cold start, except
for the choke switching. The choke lever (2) has to stay in the lower position.
If it is difficult to start the warm engine, follow these instructions:
1.
2.
3.
4.
5.
6.
!
Move the engine switch to the position OFF.
Make sure that the choke lever is in the lower position – choke off.
Push the accelerator lever several times and hold it in the position “Full
throttle”.
Pull the starter handle several times (3-5 times) and release the
accelerator lever.
Then tug quickly, so that the engine starts up.
Try to start the engine according to the above mentioned instructions.
Make sure that the engine switch is in the position OFF. Otherwise the
engine could start up and subsequently the cutting tool would start to
rotate. Danger of injury.
The exhaust fumes contain carbon monoxide, a colourless and
odourless gas. Inhaling this gas can cause loss of consciousness or even
death. Don’t start the engine in closed rooms. Make sure that there are
sufficient ventilation and access of fresh air in the place where the
engine is started.
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KC-435
1.4.3.3 Switching off the engine
Move the engine switch (2) to position STOP (O) to switch the engine off.
Use the same procedure for engine emergency stop.
Always keep in mind that the cutting tool is rotating by inertia force for some time
after the engine is switched off.
!
1.4.4 Working with the machine
After the brush cutter/trimmer is started, hang it on the harness and grasp the
handlebars properly.
!
!
When handling the brush cutter/trimmer, pay attention to avoid contact with
foreign objects and bystanders and avoid injuring yourself as the operator.
Hold the brush cutter/trimmer firmly with your hands, so that the fingers and
thumbs surround the handles as shown in the picture.
Release the accelerator lever during short breaks in the cutting, so that the engine
runs at idle revolutions. The engine could be severely damaged if running at full
speed without load for long time.
1.4.4.1 Using the nylon head
The nylon string is intended for cutting at hardly accessible places and around various obstacles where it is not
possible to use a lawn mower.
!
Make sure that the safety cover of the brush cutter/trimmer is properly fastened and fully functional.
Pulling out the nylon string
When working, slightly tap the nylon head on the ground at maximum engine revolutions. The string will be shortly
loosened and thus pulled out. It is possible to tap repeatedly until the string is pulled out to requested length. Too long
string will be cut automatically.
Cutting
The nylon string ensures clean cutting of grass without damaging tree trunks or other obstacles, such as stones,
kerbs, walls, etc. If cutting too close to solid obstacles for a longer time, it results in excessive consumption of the nylon
string.
When cutting larger areas, proceed slowly forward and move the brush cutter/trimmer continuously from left to
right and back (as if cutting with a scythe.
14
KC-435
1.4.4.2 Using the grass blade
The maximum diameter of the blade has to be 255
mm.
Cutting
The three-tooth grass blade is intended for cutting grass at
hardly accessible places, cutting high and overgrown vegetation and
even woody sprouts with a diameter of up to 2 cm.
If the high vegetation is cut from top downwards, it is ground
into small pieces.
!
!
Be cautious when cutting stronger vegetation or hard
wood. The blade can rebound and injure bystanders
or the operator or the machine could be damaged.
The brush cutter/trimmer is not intended for using
the saw blade.
1.5 Maintenance, care
To ensure long-time satisfaction with our product, it is necessary to take proper care of it at maintenance and care.
The regular maintenance of the machine prevents the machine from wear out quickly and ensures proper function of all of
its parts.
Follow all the instructions regarding the intervals for machine maintenance and adjustment. It is recommended to
make notes of working hours of the machine and of the conditions under which it worked (for service purposes). It is
recommended to entrust the after-season maintenance to one of our authorized services; the common maintenance as
well if you are not sure of your technical skills.
15
KC-435
1.5.1 Refilling the cutting string
!
!
Block the gearbox using the hex key.
Unscrew the nylon head from the angular
gearbox shaft, turning it clockwise.
Push latches (1) on sides of the nylon head and
remove the cover with the spool.
Take off the spool (2) and remove the rest of the
nylon string.
Prepare 6 m of new nylon string max. Ø 2,4 mm
and fold it in the middle (3), creating a loop.
Put the loop created in the middle of the string
into the groove in the spool (3) and wind both
ends of the string up on the coil (4). Pay attention
to the correct direction of winding.
Secure both ends of the string in the side notches
of the coil (5), so that about 10 cm of the string
remain free at both sides of the coil.
Put the coil into the nylon head cover (6).
Release the string ends from the coil notches and
draw them through the openings in the nylon
head cover.
Install the nylon head cover with the coil back and
secure it with the latches.
Use only original nylon string with
recommended diameters according to
the technical specification. If a nylon
string with too big diameter is used, it
can result in incorrect function of the
nylon head and lower cutting
performance.
Never replace the nylon string with another type
of material, such as steel wire, etc.
Don’t use strings reinforced with a metal.
16
KC-435
1.5.2 Sharpening the cutting blades of the grass blade
Perfect results of the cutting tool can only be ensured if the
blades are properly sharpened. Slight sharpening can be done with a
hand sharpening stone. For bigger blunting it is necessary to use a
tool sharpener.
In any case it is necessary to pay attention to
perfect balancing of the blade during the
sharpening. If you don’t have suitable tools or you
are not sure about the correct balancing of the
blade, contact a service shop.
Dismount the cutting blade and inspect it properly
to find out if it is not burst, bent or in another way
damaged. If any damage occurs, replace the blade
with a new one. The cutting blade can be used
from both sides. If the blades become blunt at one
side, the blade can be turned over and the blades
on the other side can be used.
Sharpen the blades only on the part intended for
sharpening. When sharpening, pay attention to
keep the sharpening profile, so that the cutting
blade is not destroyed at work. All the teeth of the
blade are to be sharpened in the same way.
If you notice abnormal vibrations after
sharpening, it is obvious that the blade is not
balanced correctly. In such a case, contact your
service and give them your blade to check it. If the
blades are worn out over the given limit, replace
the blade with a new one.
A – wrong sharpening
B – right sharpening
1 – Place of possible destruction
2 – Limit for the tooth shape
3 – Wrong sharpening angles
4 – Sharpening boundary
5 – Sharpening limit
1.5.3 Maintenance and adjusting of the engine
Maintenance and adjusting of the engine – see the instructions for use of the engine
13
1.5.4 Angle gearbox lubrication
!
13
Remove the bolt (1) at the side of the
gearbox.
Squeeze a special lithium Vaseline
(available at Honda dealers) into the
opening (2) and continue squeezing the
Vaseline until it starts to get back from
the opening (2).
Close the lubrication opening with the
bolt (1) and tighten it properly.
When working with lubricants, observe
the basic hygienic rules and regulations
and laws concerning the environmental
protection.
The original instructions for use and its translation are part of the machine.
17
KC-435
1.5.5 Servicing intervals
Maintenance intervals – carry out in given
monthly intervals or after given working
hours, depending on what comes sooner
Before
each use
Maintenance item
The first
month or
10 working
hours
Each 3
months or
25 working
hours
Engine fins
Each 6
months or
50 working
hours
Cleaning
Each year or
100 working
hours
14
15
Condition of cutting tool and safety covers
Check
Angle gearbox surroundings
Cleaning
Angle gearbox
Lubrication
Accelerator control
Check
Engine switch
Check
Air filter
Check
15
Cleaning
Intake
Cleaning
Spark plug space
Cleaning
Spark plug
Cleaning
–
Adjustment
Carburettor space
Cleaning
Cabling
Check
Fuel tubes
Check each 2 years (replace if needed)
16
Fuel filter
Check
Clutch jaw and spring
Check
16
Adjustment
16
Valve clearance
Adjustment
16
Fuel tank
Cleaning
Idle revolutions
Engine oil
Bolts and nuts
Level check
Replacement
Replacement
16
Check
–
Tightening
Table 5: Servicing intervals
14
If operated in an extremely dusty environment, carry the operation out more frequently.
Replace with a new one if damaged. Use original spare parts only.
16
Ask an authorized service to carry this operation out.
15
18
KC-435
1.5.6 Problems and their solutions
Problem
Cause
Solution
The engine does not start
Not enough fuel in the tank
Fill in the fuel
Engine switch in STOP (0) position
Move the switch to START (I) position
Spark plug not installed correctly or not
connected
Check connection and tightening of the
spark plug
Incorrect spark plug or spark plug not
correctly adjusted
Replace the spark plug with the right one,
or clean the spark plug and adjust the
electrode gap
Engine overfilled with fuel
Dismount the spark plug and dry it out
correctly; install it back
Fuel filter clogged, defective carburettor,
defective ignition, stammering valves,
etc.
Take the machine to an authorized
service
Dirty air filter
Clean the filter
Bad fuel, dirts or water in fuel tank
and/or in carburettor
Drain, clean and dry out the fuel tank and
the carburettor, fill in fresh fuel
Fuel tank bleeding clogged
Clean the bleeding opening of the fuel
tank cap
Engine is hot and choke is on
Turn the choke off
Incorrect spark plug or spark plug not
correctly adjusted
Replace the spark plug with the right one,
or clean the spark plug and adjust the
electrode gap
Dirty air filter
Clean the filter
Incorrect spark plug or spark plug not
correctly adjusted
Replace the spark plug with the right one,
or clean the spark plug and adjust the
electrode gap
Dirty air filter
Clean the filter
Dirty fins of engine cooling, clogged
starter intake, etc.
Clean the fins and starter surroundings
Low oil level in engine
Fill in the oil
Cutting tool not balanced or incorrectly
installed
Check fastening of the cutting tool,
replace it with a new one
Bolts holding the engine are loosened
Tighten the bolts
It is difficult to start the engine
or the engine loses power
The engine run is unstable
The engine is overheating
Excessive machine vibrations
Table 6: Problems and their solutions
1.5.7 Washing and cleaning the machine
!
When cleaning and washing the machine, observe valid regulations and laws concerning protection of
watercourses and other water resources against their pollution and contamination with chemical
substances.
Never wash the engine using a water stream! A malfunction of the electric equipment of the engine
could appear after starting.
Don’t use pressure washers for washing the machine.
19
KC-435
1.6 Transportation and storing
1.6.1 Transportation
!
The engine must always be off and the safety cover must
be put on the cutting tool during transport.
During transport, the brush cutter/trimmer must be
properly secured and fastened in such a way that it can’t
come loose and the oil filling can’t run out of the engine.
1.6.2 Storing
If the machine won’t be used for more than 2 months, it is recommended to take following measures:
Drain fuel from the fuel tank and let the engine run until the rest of the fuel in the carburettor is
consumed.
Unscrew the spark plug and put a few drops of clean engine oil into the combustion space of the cylinder.
Gently pull the starter rope several times, so that the oil can be spread, and install the spark plug back.
Completely clean the grass rests off the whole brush cutter/trimmer, especially from the engine cooling
fins and from the gearbox surroundings.
Spray the surface of metal parts of the brush cutter/trimmer with a thin film of preservative oil in spray
can (such as GT85, WD40, etc.) It prevents corrosion.
Veil the brush cutter/trimmer and store it in a dry place.
If it is necessary to store the brush cutter/trimmer in vertical position, store it with the engine facing
down. This avoids possible engine fall.
1.6.2.1 Tilting the handlebars
It is possible to tilt and turn the handlebars of your brush cutter/trimmer
to a storage position for easier storing. The tilting procedure is described below.
Turn the handlebars in the clockwise direction only (as seen
from above).
Never tilt the handlebars for more than ¼ revolutions.
Loosen the wing nut (1) and turn the handlebars to position A,
after that you can alternatively tilt them into position B.
Tighten the wing nut.
1.6.3 Storing the fuel
Store the fuel only in containers intended for petrol storing. Such containers prevent the petrol from
contamination by substances contained in the container walls and thus avoid possible engine damage.
Such polluted, old or degraded fuel can cause clogging of the carburettor, seizure of the distribution
system and subsequently serious damage to the engine – such problems can’t be and won’t be covered by
the warranty. The quality of unleaded petrols is strongly depending on storing conditions, petrol age, etc.
Most unleaded petrols lose their qualities during 3-4 weeks. Store only the necessary quantity of the fuel
which can be used within a month from the purchase at the latest.
The manufacturer bears no responsibility for defects on the fuel system caused by using incorrect type of fuel, fuel
which is polluted and/or otherwise contaminated and degraded, old and/or otherwise deteriorated by age or incorrect
storing.
Such defects can’t be covered by the warranty.
20
KC-435
1.6.4 Putting the machine into operation after longer storing
Dismount the spark plug and check its condition. If necessary, adjust the required electrode gap and clean
it. Pull the starter handle several times and crank the engine.
Install the spark plug back and fix it properly. As soon as the spark plug fits on the seat, tighten it for 1/81/4 revolution only.
Check the quantity and condition of the engine oil.
Add the prescribed type of fuel into the fuel tank and start the engine.
The spark plug must be properly tightened. If it is not tightened sufficiently, there’s a risk of
spontaneous unscrewing of the spark plug and damage to the engine or injury to the operator. Use only
spark plugs with corresponding temperature characteristics. Using spark plugs with other characteristics
can result in serious damage to the engine which is not covered by the warranty.
Note:
If the engine was treated with a preservative oil coating before storing, it will smoke at the beginning.
1.6.5 Disposal of the wrapping and the machine after the end of its life time
After unwrapping the machine the user is obliged to dispose of the wrapping according to the national laws and
regulations concerning waste treatment.
Following steps are recommended for the disposal of the machine after the end of its life time:
Dismount all parts which can still be used.
Drain the oil from the gearbox into a suitable closable container and take the oil to a waste collection
17
point .
Dismount parts from plastics and non-ferrous metals.
Dispose of the undressed machine rest and dismounted parts according to the national lawn and
regulations concerning waste treatment.
1.6.6 Instructions for ordering spare parts
The spare part list is not included in this manual. The latest version of the catalogue can be downloaded from our
web site. If you have no access to the internet, you can ask your dealer for a printed version. Following data are necessary
for correct identification of your machine: Type name (Type), Part number (CN°) and production Identification number
(N°). Only with these data is it possible to find the exact designation of the corresponding spare part.
Field
Description
Type
Type name of the machine. (KC-435)
o
Unique production identification number.
N
1005200006.0111.00001 (product.period.quantity)
o
Part (trade) number. (4339)
CN
Table 7: Name plate – example
1.7 Address of the manufacturer
VARI, a.s.
Opolanská 350
Libice nad Cidlinou
289 07 Czech Republic
17
Phone:
Fax:
(+420) 325 607 111
(+420) 325 607 264
E-Mail:
Web:
[email protected]
http://www.vari.cz
The place for handing it in will be advised by a local authority.
21
KC-435
Text and illustrations © 2011 VARI, a.s.
VL-155-2011
22

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Questions and Answers

What is the fuel type used in this model?
The VARI KC-435 brushcutter uses unleaded gasoline.
Which type of engine oil is recommended for the VARI KC-435 brushcutter?
The recommended engine oil for the VARI KC-435 brushcutter is SAE 10W-30 or SAE 10W-40.
How do I sharpen the cutting blades of the grass blade?
To sharpen the cutting blades of the grass blade, use a flat file to sharpen the blades at a 30-degree angle.
What safety precautions should I take while using the VARI KC-435 brushcutter?
Always wear protective clothing, including eye protection, gloves, and sturdy footwear. Keep the cutting head away from your body and other people. Be aware of your surroundings and any obstacles that may be in your path.
How often should I lubricate the angle gearbox?
The angle gearbox should be lubricated every 25 operating hours or monthly, whichever comes first.
What is the recommended fuel mixture ratio for the 2-stroke engine?
This information is not available in the provided text.

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