AS MOTOR AS 531 4T MK User manual

Operating Instructions
Lawnmower
AS 531 4T MK
From serial number: 024512100001
Issued: 04 February 2015, V3.0
EN-Translation of the Original Operating Instructions

2
dummy
Preface
Please fill in all data referring to your device.
When ordering spare parts, provide your deal-
er with the device and engine number.
Serial number:
Pleases adhere the sticker from the warranty
card here.
Engine number:
Date of purchase:
Address of dealer:
Dear customer:
Congratulations on your purchase. You have
acquired a reliable quality product by “AS-
Motor Germany”.
This product has been manufactured according
to modern manufacturing methods and com-
prehensive quality assurance measures. Only
when you are satisfied with your device, we
have attained our goal.
Read these operating instructions carefully and
attentively so that your device operates
smoothly and you and others are safe from any
hazards. If you have questions concerning
your device, please contact your dealer or call
our customer service (tele-
phone [phone]). For international
AS partners, please see:
www.as-motor.de/worldwide.
“AS-Motor Germany” wishes you much joy with
your new device.
Intended use
The device is exclusively intended for mowing
well maintained grassed lawn areas.
Only use attachments and cutting tools author-
ised by “AS-Motor Germany”.
Any use exceeding this purpose is inadmissi-
ble. The manufacturer is not responsible for
any damage resulting from this. Observe the
required maintenance and repair measures.
The user of the device is responsible for acci-
dents or damage to other persons or their
property!
The device must not be used:
–To cut hard objects, rocks, rubble, or pieces
of wood.
–To trim bushes, hedges, and shrubbery.
–To cut plants in flower pots or planters or on
rooftops.
–To clean (vacuum) footpaths.
–As shredder for shredding tree and hedge
cuttings.
–As drive unit for work tools and any type of
tool sets that are not authorised by “AS-
Motor Germany”.

3
Contents
dummy
2
Preface.....................................................
2
Intended use............................................
2
dummy Inhalts verzeichnis
4
Explanation of the symbols ....................
4
Symbols in the instructions ....................
4
Symbols on the device...........................
4
Safety instructions ..................................
5
Get informed!.........................................
5
User restrictions and hours of operation.
5
Safe handling of fuel..............................
5
Check the device prior to use.................
6
Use caution during operation .................
6
Prior to mowing......................................
6
Use caution when mowing.....................
6
When work is completed........................
8
Use caution during maintenance and
repair.....................................................
8
Device description...................................
9
Control elements.....................................
10
Assembly .................................................
11
Scope of delivery...................................
11
Unpacking..............................................
11
Mounting guide bar and handlebar.........
11
Assembling the grass collection bag......
12
Mounting the grass collection bag..........
12
Transport..................................................
12
Information on mowing...........................
13
Prior to starting........................................
13
Fuel .......................................................
13
Tanking up.............................................
14
Checking the engine oil level .................
14
Adjusting the cutting height....................
14
Starting.....................................................
15
Starting the device.................................
15
Engaging the blade................................
15
Driving......................................................
15
Driving...................................................
15
Turning..................................................
15
Emptying the grass collection bag.........
16
Switching off and parking.......................
16
Maintenance and cleaning ......................
17
Preparations ..........................................
19
Cleaning the device ...............................
19
General inspection.................................
19
Maintaining the engine...........................
19
Checking the engine oil level..................
20
Checking the spark plugs.......................
20
Maintaining the air filter..........................
20
Checking the drive.................................
20
Checking the blade................................
20
Storage.....................................................
21
Storing the device..................................
21
Longer storage.......................................
21
Restarting..............................................
22
Spare parts...............................................
22
Wear parts................................................
22
Disposal ...................................................
22
Warranty...................................................
22
Troubleshooting ......................................
23
Accessories .............................................
25
Technical data..........................................
26
Declaration of conformity........................
27
Marketing
28

4
dummy Inhalts verzeichnis
Explanation of the symbols
Symbols in the instructions
In these operating instructions, the following
symbols are used to denote special dangers.
Warning.
These symbols denote special
dangers.
Prohibition sign.
These symbols denote inadmis-
sible procedures.
Directive sign.
These symbols denote required
protective measures.
Symbols on the device
The following symbols are placed on the de-
vice to inform you must be careful and atten-
tive when using the device:
Working with the device requires
extreme cautiousness.
Read the operating instructions
before you use the device.
Risk of injury!
Make sure that no one is within
the danger zone of the device.
Objects may be ejected.
The quickly rotating blade can
cause life threatening injuries or
immense property damage! Be
especially careful to keep your
hands and feet away from the
blade when the device is put into
operation.
Prior to any repair and mainte-
nance work, pull off the spark
plug connector.
Clean the ventilation grid!
The cooling air of the
motor is sucked in through
the ventilation grid of the
engine cover. Always keep
the entire surface open
and free!
Noise is causing health prob-
lems. Use personal ear protec-
tion to avoid hearing damage.
Type plate
The type plate on the device provides you
with information on the device type and
the technical data.
1
Name and address of the manufac-
turer
2
Device designation
3
Type designation
4
Rated power output in kW / engine
speed
5
Weight
6
Year of manufacture
7
Serial number
8
CE marking
9
Sound level LWA

5
Safety instructions
Get informed!
For your safety, read these operating instruc-
tions with care. Familiarize yourself with the
control elements and the proper use of the
device. Share these operating instructions with
other users of the device.
Before you use the device for the first time, let
the dealer instruct you regarding safe use.
Get familiar with the device in a wide, open
and flat terrain first.
User restrictions and hours of
operation
Never allow children or persons who are not
familiar with the operating instructions to use
the device. Persons under 18 years of age
may operate the device only under proper
supervision. Local regulations determine the
minimum age of the operator und the operating
times.
Unsuitable for operation of the device are
persons who
–are under the influence of alcohol, drugs or
reaction retarding medicines.
–have physical and mental/emotional impair-
ments.
–are tired or sick.
People fitted with pace makers
are not allowed to touch any
current carrying parts of the
ignition system.
Safe handling of fuel
Danger!
Fuel is toxic and highly inflamma-
ble.
Danger of fire and explosion!
Keep the fuel away from ignition
sources and do not smoke while
handling the device.
Do not inhale fuel vapours; they are
dangerous to your health.
Use gloves and avoid skin
contact with the fuel.
Fuel up outdoors only when the engine is cool
and not running. Use a filler or funnel.
Do not spill any fuel and do not let the fuel get
into the canalisation or ground water.
If you spilled fuel, do not start the device until
the fuel vapours have evaporated (wipe dry).
Move the device away from the area where the
fuel was spilled.
Always close the tank cap securely and do not
open it while the engine is running or the de-
vice is still hot.
Drain the fuel tank only when outdoors. Use a
suitable container or run the tank empty.
Keep the fuel away from children and store it in
a suitable container in a dark, cool, and dry
location.
Never park the device with fuel in the tank
inside a building where fuel vapours could
come in contact with open fire or sparks.
Immediately replace a damaged fuel tank or
tank cap (authorised dealership).
First aid
When swallowing fuel or inhaling fuel vapours,
do not force vomiting and immediately consult
a doctor.

6
In case of skin contact, immediately wash with
water and soap. Change your soiled clothing
as soon as you can.
Measures in case of a fire
In case of a fire, use foam, dry powder extin-
guisher, or carbon dioxide (CO2). Never douse
with water!
Check the device prior to use
Prior to use, check the knife, drive and fas-
tening parts for proper working condition and
firm seating by visual inspection.
Never use the device with defective or missing
covers, impact protection flap or grass collec-
tion bag.
Do not remove, change or override any safety
devices or control elements.
Observe the maintenance instructions and
replace damaged or worn parts immediately.
Have an authorised service centre check your
device if the blade does not stop within
3 seconds.
Use caution during operation
Do not start the engine
–if fuel was spilled.
–in closed or poorly ventilated rooms (danger
of poisoning!).
–if there are other persons nearby.
Only start the device when your feet are at a
safe distance to the blade.
During startup of the engine, do not tilt the
device.
Do not touch the engine or the silencer. They
become very hot during operation and you can
get burned. Resulting unintentional movements
constitute an additional injury hazard.
Switch off the blade and wait until the blade
comes to a standstill
–before you open the impact protection flap
or remove the grass collection bag.
–before you move over surfaces other than
grass.
Switch off the engine and wait until the blade
comes to a standstill
–before you tilt or transport the device.
–if you step away from the device, even for
just a short time.
–before you adjust the cutting height.
–before you refuel.
Switch off the engine and wait until the blade
comes to a standstill, and pull off the spark
plug connector
–before you clean or check the device or
before you carry out work on the device.
–before you unblock or unclog the discharge
area.
Prior to mowing
Personal protective measures
While mowing, always wear
sturdy footwear with good grip,
long trousers, and gloves. Do
not mow in open sandals or
bare feet.
Noise is causing health prob-
lems. Use personal ear protec-
tion to avoid hearing damage.
Wear safety glasses and head-
gear.
Ask your specialised dealer about suitable
protective equipment.
Preparing the mowing area
Prior to mowing, carefully check the perimeter
of the lawn. Remove rocks, pieces of wood,
bones, wires, and other objects that could be
picked up and thrown out by the device.
Use caution when mowing
Risk of injury
Stay within shouting distance to other people
who can help you in case of an emergency.

7
Danger!
Risk of injury caused by thrown out
objects.
Never mow while persons, children,
pets, or property are in the vicinity.
The area in front of and to the right of the
device is especially dangerous.
Keep your hands and feet away from the
rotating parts. Keep a distance to the ejection
area while working with the device.
Never open the impact protection flap and
never empty the grass collection bag as long
as the knife is running. The rotating knife can
cause injuries and objects can be thrown out.
Only mow during daylight or with adequate
artificial lighting. Never mow in the event of
uncertain weather conditions and risk of light-
ning.
Be especially carefully when mowing on soft
ground, nearby landfills, ditches and dikes.
Avoid mowing wet grass -
slipping hazard!
Be extremely cautious when turning the device
round or pulling it toward you and when mov-
ing in reverse.
Always walk slowly!
Never lift or carry the device when the engine
is running.
When using the device over a longer period of
time, vibrations can cause disturbances in the
blood supply of the hands. A generally accept-
ed usage time cannot be determined. Use
gloves.
Take breaks on time.
Have an authorised service centre check the
device immediately
–if the blade hit an object.
–if the device starts to vibrate unusually
severely.
Caution when mowing slopes
Devices fitted with a four stroke engines may
only be operated on less than 20° slopes.
Otherwise, the four stroke engine can by dam-
aged due to insufficient oil lubrication.
When mowing slopes,
there is a risk of slipping
and tilting!
–Only mow steep slopes when safe operation
assured.
–Do not mow excessively steep slopes.
–When mowing steep slopes, meet the ap-
propriate safety measures, e.g. use step
irons.
–Always mow in horizontal directions, never
up- or downwards.
–Sure footing is essential for your safety,
always wear skid proof safety shoes.
–Be extremely careful when changing the
direction.
–Only mow when the surface is dry and non-
slip.
The device can roll away when you mow
downhill. Put the device down on even surfac-
es only and prevent inadvertent rolling.
Mowing surfaces with fire hazard
–Carry a sufficient amount of suitable extin-
guishing agent.
–If side inclination is too great, fuel may leak
from the carburetor or the tank. This poses a
fire hazard!
–Observe the mowed surface also after mov-
ing is completed to ensure that no fire will
start.
To avoid risk of fire, keep the following compo-
nents free of dirt, grass, hay, leaking oil,
grease, etc.:
–Engine
–Silencer (manifold, guard, clearances)
–Area around the fuel tank

8
When work is completed
After mowing, always close the fuel valve and
the tank ventilation.
Prior to leaving the device, wait until the engine
comes to a standstill and pull off the spark plug
connector.
After switching it off, let the device cool down
for at least 20 minutes before you store it in a
dry, closed, sufficiently ventilated room.
Never store the device when there is fuel in the
tank inside a building where fuel vapours might
come into contact with open fire or sparks.
Use caution during maintenance
and repair
Only carry out maintenance work as described
in these operating instructions. Have an au-
thorised service centre carry out all other work.
Only use the knives and spare parts authorized
by “AS-Motor Germany”. Unauthorized knives
and spare parts can cause severe injuries.
Prior to all maintenance work, wait until the
engine comes to a standstill and pull off the
spark plug connector.
We explicitly point out that, in accordance with
the Product Liability Act, we are not liable for
damages that were caused by our devices if
–worn or damaged parts were not repaired or
replaced on time.
–these damages were caused by improper
repair.
–when changing a part, our original parts or
parts authorised by use were not used.
–the repair work was not carried out by an
authorised service station.
The same applies for spare parts and accesso-
ries.

9
Device description
8
7
6
12
11
9
10
4
18
3 2
13
1
5
17
14 15
16
16
19
1
Silencer
2
Abrasive strip
3
Type plate
4
Oil filler opening
5
Starter grip
6
Impact protection flap
7
Grass collection bag
8
Handle bar with control elements
9
Lever for lateral adjustment of handle-
bar
10
Height adjustment of handlebar
11
Tank ventilation
12
Tank filler spout
13
Engine stop switch
14
Ventilation grid
15
Air filter
16
Cutting height adjustment
17
Spark plug connector
18
Impact protection
19
Cover

10
Control elements
234
6
1
5
8 7
Drive lever (1)
With the drive lever, you switch the drive on
and off.
Drive on (I):
Press the lever towards
the handlebar and contin-
ue to hold.
Drive off (0):
Release the lever.
Blade clutch bar (2)
The blade clutch bar is a protective device.
When you release the bar, the blade comes
to a standstill within 3 seconds.
M
I
0
Engaging blade (I):
Lift the blade clutch bar, en-
gage the latch know (3) and
press the blade clutch bar
towards the handlebar.
Disengaging blade (0):
Release the blade clutch bar.
Varioshift lever (4)
With the varioshift lever, you can continuously
adjust the speed of the device while the
engine is running.
Slower:
Press the lever towards the
handlebar.
Faster:
Release the lever.
Locking min. speed:
1. Press the varioshift towards the handlebar
until it engages.
Releasing min. lock:
1. Press your thumb against the red release
lever (5) and release the varioshift lever un-
til you have reached the desired speed.
Setting max. speed:
1. If necessary, release the min. lock.
2. Release the varioshift lever.
Lateral adjustment handlebar(6)
The handlebar can be fixed in 3 positions.
1. Release the clamping lever (6) with one
anti-clockwise rotation.
2. Lift the handlebar.
3. Beware: Do not squeeze the Bowden
cables when swivelling the handlebar.
Swivel the handlebar to the side to the de-
sired position. Insert one of the three
screws (8) into the bore hole at the handle-
bar.
4. Beware: If a clamping lever is loose, the
clamping bolt of the handlebar can fail.
Tighten the clamping lever by turning
clockwise.
Changing the neutral position of the clamping
lever
1. Lift the clamping lever (6) and turn it to the
desired position.
Vibration Protect dampening (7)
V
i
b
r
a
t
i
o
n
P
r
o
t
e
c
t
To reduce vibration, the
support of the lever is
flexibly mounted.

11
Lever height adjustment
Set the height of the lever by setting the
screw for the lever height adjustment.
3 positions are available.
Engine stop switch (14)
Switch the ignition on and off with the
engine stop switch. When you switch
off the ignition, the engine is switched
off.
0: OFF
I: ON
Fuel valve
1
2
3
1: Reserve
2: Open
3: Closed
Assembly
Scope of delivery
The device is delivered in a carton.
The scope of delivery includes:
–The device.
–These operating instructions.
–The warranty card.
–The operating instructions of the engine
manufacturer.
–The grass collection bag.
–Tool bag with small items.
Unpacking
1. Remove the loose parts from the box.
2. Cut open the front side of the box.
3. Push the device out of the box
Mounting guide bar and handlebar
1
4
2 3
5
1. Move the guide bar (1) backwards.
2. Engage the screw (5) at the guide bar into
one of the notches and tighten the nut (see
Lever for height adjustment).
3. Attention: Do not crush the Bowden ca-
bles (3) when moving the handlebar.
Swivel the handlebar (2) clockwise towards
the rear and tighten the clamping lever (4).
You can switch the position of the control lever
at the handlebar (left/right). Please contact an
authorised service centre.

12
Assembling the grass collection
bag
1
2
3
1. Pull the grass collection bag (1) over the
frame (2).
2. Fasten the grass collection bag with the
plastic profiles to the frame.
3. On both sides of the grass collection bag:
Screw the rod (3) through the eyelets of the
grass collection bag to the frame (4 x screw
and nut M6).
Mounting the grass collection bag
2
1
1. Switch off the blade and wait until the blade
comes to a standstill.
2. Lift the impact protection flap (1).
3. Insert the grass collection bag (2) into the
recesses.
4. Lower the impact protection flap onto the
grass collection bag.
leerer Absatz
Transport
Switch off the engine and wait until the blade
comes to a standstill before you lift the device.
Two people should lift the device.
Switch off the device before every transport
and let it cool down for at least 20 minutes.
Close the tank ventilation and the fuel valve.
For transport, you can fold up the handlebar
and the guide bar.
When transporting by vehicle, secure the
device against rolling, sliding, tilting, and fuel
and oil leakage.

13
Use tension belts to secure the device.
Beware: To avoid damage to the device,
fasten the tension belts exclusively as shown
in the illustration. Do not overtighten the tensi-
on belts.
leerer Absatz
Information on mowing
Prior to mowing, check your device for com-
pleteness, proper functioning, and cleanliness.
A dirty ventilation grid causes overheating of
the engine, this can damage the engine. A dirty
protective grid at the silencer poses a fire
hazard.
Frequent engagement and disengagement of
the clutch increases wear of the blade drive
belt and the blade brake. Especially in case of
high grass, clutch engagement leads to over-
load.
To keep the area well maintained, mow fre-
quently and keep the grass short. Do not mow
your lawn too low in dry and hot conditions
because the lawn is susceptible to sun and
heat damage and will look unsightly!
Only mow with a sharp and undamaged blade.
Have the blade sharpened and balanced
regularly (by authorised service centre).
Do not mow when the grass is wet or when it is
raining. The turf may be damaged and there is
a danger of slipping!
Turn the device around only in already mown
sections. Do not leave the device unattended
while the engine is running
For mowing, always turn the accelerator lever
to full throttle to achieve the best mowing
performance.
To collect the grass without blockage, we
recommend, for flat terrain, to proceed accord-
ing to the mowing patterns.
If the grass is extremely high, mow twice at
different cutting height settings.
leerer Absatz
Prior to starting
Fuel
As fuel, use unleaded petrol (see operating
instructions of the engine manufacturer).
You can use E10 petrol. Do not store E10
petrol longer than 30 days.

14
Tanking up
Danger!
Fuel is ignited by hot engine parts.
Prior to filling up, switch off the
engine and wait for at least
20 minutes until the engine has
cooled down. Observe the safety
instructions regarding the fuel!
Filling in the fuel:
1. For filling, use a canister with a filler spout
or use as funnel.
2. Open the canister carefully so that the
existing overpressure is discharged slowly
and no fuel spurts out.
3. Open the tank cap carefully so that the
existing overpressure is discharged slowly
and no fuel spurts out.
4. Fill the fuel tank.
5. Screw the tank cap on tightly.
Checking the engine oil level
Attention! Prior to each use, check the engine
oil level (see operating instructions of the
engine manufacturer).
To ensure sufficient oil supply for the four
stroke engine and to avoid resulting engine
damage, the device may only be used on
slopes up to 20°.
Adjusting the cutting height
Adjust the cutting height setting only when the
engine is switched off.
Set the cutting height so that the blade does
not touch the ground even in case of terrain
unevenness. If the cutting height is set too
high, objects can be ejected and the “clean cut
appearance” can be destroyed.
The cutting height can be adjusted in 1 cm
increments from 3 cm to 8 cm.
1
2
1. Switch off the engine and wait until the
blade has come to a standstill.
2. With the adjusting lever (1) adjust each
wheel to the same cutting height. While do-
ing so, adjust wheel after wheel only by
one position at a time.
Setting the cutting height
Under high load, adjust the cutting height by
tightening the screw (2).
leerer Absatz

15
Starting
Danger!
During startup, there is a risk of
injury caused by the rotating blade.
Make sure that no one is within the
danger zone of the blade. Do not tip
the device over to one side during
startup.
Danger!
If after startup the carburetor does
not close properly, fuel will overflow
and a fire hazard occurs.
Close the fuel valve and contact an
authorised service centre.
Starting the device
1. Place the device onto a flat surface, not in
high grass.
2. Open the fuel valve and the tank ventila-
tion.
3. Plug on the spark plug connector.
4. Set the engine stop switch to "I".
5. Pull the starter point slowly out until you
feel resistance then pull out quickly –en-
gine starts to run.
6. Let the starter rope retract slowly.
Engaging the blade
1. Lift the blade clutch lever.
2. Press the latch knob at the blade clutch
lever.
3. Press the blade clutch lever towards the
handlebar –the blade starts to move.
Disengaging the blade when moving over
paths:
1. Release the blade clutch lever.
Driving
Danger!
Risk of injury caused by tripping or
sliding while moving the mower
backwards and turning it round.
Make sure that the area is clear of
objects and watch for safe footing.
Driving
In case of a hazardous situation, switch off the
drive and declutch the blade.
Drive on
1. Pull the drive lever toward the handlebar –
device starts moving.
2. Set the desired speed using the varioshift
lever.
Drive off:
1. Release the drive lever.
Adjusting speed
The driving speed can be continuously adjust-
ed with the
varioshift lever.
Only adjust the driving speed when the engine
is running; otherwise, the vario drive can be
damaged.
When approaching obstacles, you reduce the
driving speed with the
varioshift lever.
For longer drives, lock in the driving speed with
the varioshift lever in the highest or lowest
driving speed.
Turning
Turn the device round only where the grass
has been mowed already.
Turning round on an even surface:
1. Switch off the drive.
2. Turn the device to the desired side.
3. Switch the drive back on.
Turning round on a sloping area:
1. Keep the drive switched on.

16
2. Turn the device upslope.
3. Hold back the handlebar and the inner
wheel.
The drive prevents sliding and supports the
turn manoeuvre.
leerer Absatz
Emptying the grass
collection bag
3
2
1
Display of fill level: It the grass collection bag is
full, the sewn-on material goes down (1) (dust
protection).
Danger!
Risk of injury caused by rotating
blades.
When the engine is running, never
reach into the discharge channel.
Emptying the grass collection bag
1. Disengage the blade and wait until it comes
to a standstill.
2. Lift the impact protection flap (2).
3. Remove the grass collection bag (3).
4. Lower the impact protection flap.
5. Empty the grass collection bag completely.
leerer Absatz
Switching off and parking
Caution!
On a slope, the device can roll
away.
Put the device on even ground only
or secure it against rolling away.
1. Release the drive lever.
2. Turn the engine stop switch to "0".
3. Wait until the engine comes to a standstill
before you step away from the device.
4. Close the fuel valve and the tank ventila-
tion.
5. Pull off the plug connector.
leerer Absatz

17
Maintenance and cleaning
Regular maintenance keeps your device ready
for use.
If you do not observe the maintenance notices,
faults may occur that are not covered by the
warranty. Operational safety is endangered as
well.
Contact your authorised service centre for
checkup if you detect problems during mainte-
nance.
Component
Action
Maintenance
interval
A
B
Device
Check for safe working condition (basic inspection).
■
▲
Clean.
■
Customer service.
▲
Fuel
Check fuel level.
■
Is the tank cap closed?
■
Tank,fuel valve,
and fuel line
Check parts for leaks and check for good condition.
■
▲
Carburetor
Does the carburetor close again after starting?
■
▲
Ventilation grid
Clean.
■
▲
Engine cooling
Clean.
▲
Spark plug
Check/replace.
▲
Air filter
Maintain.
■
■▲
Blade and fasten-
ing components
Check for wear and damage. See chapter Checking the
blade.
■
▲
Change.
▲
Blade brake
Does the blade function safely and does the blade come to
a standstill within 3 seconds?
□
▲
Drive lever
Does the device stop when the lever is in zero position?
□
▲
V-belt
Are the belts tensioned correctly, without fissures, and in
good condition?
▲
Bowden cables
Check for proper function and ease of movement.
■
▲
Chassis and im-
Check for rust and fissures and check the welding seams.
■
▲

18
pact protection
Are all protective devices and covers in place, fastened
correctly and properly functioning?
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Label
Condition of the labels.
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▲
Engine
See operating instructions of the engine manufacturer.
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▲
Check oil level (see operating instructions of the engine
manufacturer).
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▲
Oil change.
▲
Flammable materi-
al
Remove easily flammable debris buildup from the engine
and the device.
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▲
Tyres
Check tyres and, if necessary, the tyre pressure.
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▲
A
B
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□
▲
Before and after each use.
Annually or every 50 h.
By the user when the engine is not running.
By the user when the engine is running.
By the authorised service centre.

19
Preparations
Caution!
Risk of injury.
Guide bar can snap back.
To provide secure stand, place the
guide bar onto the ground.
Prior to all maintenance and cleaning work
1. Let the device cool down for at least
20 minutes.
2. Pull off the spark plug connector.
3. Close the fuel valve and the tank ventila-
tion.
4. Remove the clamping lever from the guide
bar and flip the guide bar forward (do not
crush the Bowden cables).
5. Tilt the device backwards according to the
illustration.
6. Put the guide bar onto the ground.
Cleaning the device
Depending on use, clean the device thorough-
ly, especially the bottom and the knife.
Grass cuttings and dirt that are stuck interfere
with the grass ejection and impair the cutting
quality. To sufficiently cool the engine, keep
the engine cover, ventilation grid and engine
clean.
Fire hazard! Take particular care that the
components at the silencer are clean.
For cleaning, use a hand brush. Remove
stubborn dirt with a wooden or plastic spatula.
Clean the outside housing parts with a cloth.
Do not clean the device with water spray or
high-pressure cleaner! Do not use any aggres-
sive cleaning agents.
General inspection
To ensure proper working order of the device,
regularly check all nuts, bolts, screws, fuel line
connections, air filters, etc. for firm seating.
Check the ignition cable and the spark plug
connectors for damages.
Change the damaged or used parts especially
covers, grass collection bag, silencer, abrasive
strip, impact protection or fuel immediately
(authorised service centre).
Check all parts that contain fluids for leaks and
proper condition. These can be: Fuel tank, fuel
valve, fuel lines, carburetor, engine, gears,
battery, hydraulic system.
In case of leaks, contact an authorised service
centre.
Maintaining the engine
Danger!
If the speed of rotation is set too
high, objects can be ejected. The
engine can be damaged and noise
pollution increases.
Do not change the basic setting of
the carburetor or the speed control.
The operating instructions of the engine are
prepared by the engine manufacturer. They
contain the maintenance instructions and the
warranty conditions for the engine. If warranty
work for the engine is required, please contact
your authorised service centre or the nearest
authorised engine dealer.
To ensure a long service life of the engine,
sufficient engine cooling is required.
Keep the
- engine cover (ventilation grid),
- silencer (protective grid) and

20
- cooling fins of the engine
clean at all times.
Checking the engine oil level
Never allow the oil level to be too low other-
wise the engine can be damaged. Never fill in
too much oil. Otherwise, there is the risk that
the oil enters and destroys the air filter.
For this, observe the attached operating in-
structions of the engine.
Checking the spark plugs
Danger!
The ignition system generates an
electromagnetic field.
Wearers of pacemakers must not
work on live parts.
Soiled spark plugs reduce the engine output.
Clean the electrode of the spark plug with a
brass wire brush. Check the electrode gap
(see operating instructions of the engine manu-
facturer). Make sure that the insulator around
the electrode is not damaged. Never use a
damaged spark plug.
Tighten the spark plug using the correct torque
(see operating instructions of the engine manu-
facturer).
Maintaining the air filter
Danger!
Cleaning agents pose a fire and
explosion hazard.
Never clean the air filter with flam-
mable solvents.
Make sure that the air filter is always clean. A
dirty air filter reduces the engine performance
and leads to increased engine wear and fuel
consumption. Irrespective of the operating
hours, change the filter insert at least once a
year. Do not operate the engine without air
filter.
For this, observe the attached operating in-
structions of the engine.
Checking the drive
1. Put the device on a non-slip surface (e.g.
concrete or asphalt).
2. Switch off the engine.
3. Actuate the drive.
4. Try to pull the device backwards.
If the rear wheels lock, the drive is correctly
adjusted. If you can pull the device, the drive
must be re-adjusted.
1
Re-adjusting the drive
Turn the adjusting screw (1) at the drive so that
the wheels lock, while the drive is actuated,
when the device is pulled. If there is no im-
provement after the adjustment, have the
device checked by an authorised service
centre.
Checking the blade
Danger!
Improperly mounted and main-
tained blades pose a severe injury
hazard.
Work at the blade shall only be
performed by an authorised service
centre.
Wear sturdy gloves when you
check the blades.
Work on the blade requires special qualifica-
tions because an unbalance test is required
and the torques must be observed.
Check the blade and all fastening parts for
wear, damage and cracks