STIHL GHE 150, GHE 250, GHE 250 S
EN
Instruction manual
GHE 150.0 GHE 250.0 GHE 250.0 S
B
0478 201 8313 B. E20 © 2020 STIHL Tirol GmbH
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0478 201 8313 B
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0478 201 8313 B
Dear Customer,
Thank you for choosing STIHL. We
develop and manufacture our quality
products to meet our customers'
requirements. The products are designed
for reliability even under extreme
conditions.
STIHL also stands for premium service
quality. Our specialist dealers guarantee
competent advice and instruction as well
as comprehensive service support.
We thank you for your confidence in us
and hope you will enjoy working with your
STIHL product.
Dr. Nikolas Stihl
IMPORTANT: READ BEFORE USE AND
KEEP IN A SAFE PLACE.
1. Table of contents
Notes on the instruction manual 4
General 4
Instructions for reading the
instruction manual 4
Machine overview 6
For your safety 7
General 7
Warning – dangers caused by
electrical current 8
Clothing and equipment 8
Transporting the machine 8
Before operation 9
Working with your machine 9
Maintenance and repairs 11
Storage for prolonged periods
without operation 11
Disposal 12
Description of symbols 12
Standard equipment 13
Preparing the machine for
operation 14
Attaching the wheel axle and
wheels 14
Installing the chassis and ejection
chute 15
Opening and closing the discharge
flap 16
Attaching the upper chute 17
Mounting the cable clip 17
Notes on working with the
machine 17
What material can be processed? 17
What material cannot be
processed? 18
Maximum branch diameter 18
Working area for operator 18
Correct machine load 18
Overload protection 18
If the cutting unit of the garden
shredder is blocked 18
Feeding the garden shredder 19
Safety devices 19
Motor restart inhibitor 19
Safety interlock 19
Motor run-down brake 19
Protective covers 19
Operating the machine 19
Electrical connection of garden
shredders 20
Switching on the garden shredder 20
Switching off the garden shredder 20
Shredding 20
Maintenance 21
Cleaning the machine 21
Installing the feed chute 21
Removing the feed chute 21
Locking the blade disc 22
Removing the blade set 22
Installing the blade set 23
Blade maintenance 23
Reversing the blades 24
Electric motor and wheels 25
Storage and winter break 25
Transport 25
Winding up the cable 25
Pulling or pushing the garden
shredder 26
Lifting or carrying the garden
shredder 26
Transporting the garden shredder
on a load floor 26
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Printed on chlorine-free bleached paper. Paper is recyclable. Cover is halogen free.
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Minimising wear and preventing
damage 27
Standard spare parts 27
Environmental protection 27
Technical specifications 28
Troubleshooting 28
Service schedule 29
Handover confirmation 29
Service confirmation 29
2. Notes on the instruction manual
2.1 General
This instruction manual constitutes
original manufacturer’s instructions in
the sense of EC Directive 2006/42/EC.
STIHL is continually striving to further
develop its range of products; we therefore
reserve the right to make alterations to the
form, technical specifications and
equipment level of our standard
equipment.
For this reason, the information and
illustrations in this manual are subject to
alterations.
This instruction manual may describe
models that are not available in all
countries.
This instruction manual is protected by
copyright. All rights reserved, especially
the right of reproduction, translation and
processing using electronic systems.
2.2 Instructions for reading the instruction manual
Illustrations and texts describe specific
operating steps.
All symbols which are affixed to the
machine are explained in this instruction
manual.
Viewing direction:
Viewing direction when left and right are
used in the instruction manual:
the user is standing behind the machine
(working position).
Section reference:
References to relevant sections and
subsections for further descriptions are
made using arrows. The following example
shows a reference to a section: (Ö 3.)
Designation of text passages:
The instructions described can be
identified as in the following examples.
Operating steps which require intervention
on the part of the user:
● Release screw (1) using a screwdriver,
operate lever (2)...
General lists:
– Use of the product for sporting or
competitive events
Texts with added significance:
Text passages with added significance are
identified using the symbols described
below in order to especially emphasise
them in the instruction manual:
Danger
Risk of accident and severe injury
to persons. A certain type of
behaviour is necessary or must be
avoided.
Warning
Risk of injury to persons. A certain
type of behaviour prevents possible
or probable injuries.
Caution
Minor injuries or material damage
can be prevented by a certain type
of behaviour.
Note
Information for better use of the
machine and in order to avoid
possible operating errors.
Illustrations with text passages:
Operating steps relating directly to the
illustration can be found immediately after
the illustration, with a corresponding
reference to the item numbers.
Example:
For shredding, fold discharge flap (1)
upwards and allow tab (2) to engage in the
ejection chute extension.
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Texts relating to illustrations:
Illustrations relating to use of the machine
can be found in the front of this instruction
manual.
The camera symbol serves to link
the figures on the illustration pages
with the corresponding text
passages in the instruction manual.
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3. Machine overview
1 Upper chute
2 Lower chute
3 Closure screws
4 Basic unit
5 Ejection chute
6 On/off switch with mains connection
7 Wheels
8 Wheel carrier
9 Rating plate with machine number
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4. For your safety
4.1 General
These safety regulations must
be observed when working with
the machine.
Read the entire instruction
manual before using the
machine for the first time. Keep
the instruction manual in a safe
place for future reference.
These safety precautions are essential for
your safety, however the list is not
exhaustive. Always use the machine in a
reasonable and responsible manner and
be aware that the user is responsible for
accidents involving third parties or their
property.
Make sure that you are familiar with the
controls and use of the machine.
The machine must only be used by
persons who have read the instruction
manual and are familiar with operation of
the machine. The user should seek expert
and practical instruction prior to initial
operation. The user must receive
instruction on safe use of the machine
from the vendor or another expert.
During this instruction, the user should be
made aware that the utmost care and
concentration are required for working with
the machine.
Residual risks persist even if you operate
this machine according to the instructions.
Risk of death from suffocation!
Packaging material is not a toy danger of suffocation! Keep
packaging material away from
children.
Only give or lend the machine, including
any accessories, to persons who are
familiar with this model and how to operate
it. The instruction manual forms part of the
machine and must always be provided to
persons borrowing it.
Make sure that the user is physically,
sensorily and mentally capable of
operating the machine and working with it.
If the user is physically, sensorily or
mentally impaired, the machine must only
be used under supervision or following
instruction by a responsible person.
Make sure that the user is of legal age or
being trained under supervision in a
profession in accordance with national
regulations.
The machine must only be operated by
persons who are well rested and in good
physical and mental condition. If your
health is impaired, you should consult your
doctor to determine whether working with
the machine is possible. The machine
should not be operated after the
consumption of alcohol, drugs or
medications which impair reactions.
The machine is intended for private use.
Caution – risk of accident!
STIHL garden shredders are suitable for
shredding branch material and plant
trimmings. Their use for other purposes is
not permitted and may be dangerous or
result in damage to the machine.
The garden shredder must not be used
(incomplete list):
– for any other materials (e.g. glass,
metal).
– for tasks other than those described in
this instruction manual.
– for the preparation of foodstuffs
(e.g. crushing ice, mashing pulp).
For safety reasons, any modification to the
machine, except the proper installation of
accessories approved by STIHL, is
forbidden and results in voiding of the
warranty cover. Information regarding
approved accessories can be obtained
from your STIHL specialist dealer.
In particular, any tampering with the
machine which increases the power output
or speed of the engine or motor is
forbidden.
It is not permitted to transport objects,
animals or persons, particularly children,
on the machine.
Particular care is required during use in
public green spaces, parks, sports fields,
along roads and in agricultural and forestry
businesses.
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4.2 Warning – dangers caused by electrical current
Warning:
Risk of electric shock!
Particularly important for
electrical safety are the
power cable, mains plug,
On / Off switch and
electric cable. Damaged cables,
connectors and plugs, or electric
cables that do not conform to
regulations must not be used, to
prevent any risk of electric shocks.
Therefore, check the electric cable
regularly for signs of damage or
ageing (brittleness).
Only operate machine with fully uncoiled
power cable.
Extension reels must always be fully
unwound before use.
Never use a damaged extension cable.
Replace defective cables with new ones
and never repair extension cables.
If the power cable or extension cable is
damaged during operation, immediately
disconnect the power cable or extension
cable from the power supply. Never touch
the damaged power cable or extension
cable.
Never use the machine if the cables are
damaged or worn. Check the power cable
in particular for damage and ageing.
Maintenance and repair work on power
cables must only be performed by
specially qualified technicians.
Danger of electric shock!
Do not connect a damaged cable to the
mains and only touch a damaged cable
once it has been disconnected from the
mains.
Only touch the cutting units (blades) when
the machine is disconnected from the
mains.
Always ensure that the power cables used
are adequately protected by a fuse.
Do not work in the rain or in a
wet environment.
Only use extension cables that
are insulated against moisture
for outdoor use which are suitable for use
with the machine (Ö 10.1).
Detach electric cables at the plug and
socket and not by pulling on the electric
cable.
Do not leave the machine unprotected in
the rain.
It must be noted that current fluctuations
can damage the machine when it is
connected to a power generator.
Only connect the machine to a power
supply that is protected by means of a
residual current-operated protective
device with a release current of a
maximum of 30 mA. Your electrician can
provide further information.
4.3 Clothing and equipment
Always wear sturdy footwear
with high-grip soles when
working. Never work barefoot
or, for example, in sandals.
Also always wear sturdy gloves
when working and in particular
also when performing
maintenance operations or
transporting the machine.
Always wear safety glasses and
hearing protection when
working. Wear them at all times.
Wear suitable, close-fitting
clothing when working with the
machine, e.g. overalls, but not
work coats. Do not wear
scarves, ties, jewellery, clothing with
dangling straps or cords or other
protruding articles of clothing when
working with the machine.
Long hair must be tied up and secured
(headscarf, cap, etc.) at all times when
operating or performing work on the
machine.
4.4 Transporting the machine
Always wear gloves in order to prevent
injuries due to sharp-edged and hot
components.
Do not transport the machine with the
motor running. Switch off the motor, allow
the blades to come to a standstill and
disconnect the mains plug prior to
transport.
Only transport the machine once the motor
has cooled down.
Only transport the machine with the feed
chute properly fitted
Risk of injury due to exposed blades.
Pay particular attention to the weight of the
machine, especially when tilting.
Use suitable loading aids (loading ramps,
lifters).
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Secure the machine on the load floor using
adequately dimensioned fastening
material (straps, ropes etc.) at the
fastening points described in this
instruction manual. (Ö 12.)
Push or pull the machine at walking pace
only. Do not tow!
When transporting the machine, always
observe regional legislation, especially
regarding load security and the transport
of objects on load floors.
4.5 Before operation
Make sure that only persons who are
familiar with the instruction manual are
permitted to use the machine.
Observe the local regulations regarding
permitted operating times for gardening
power tools with combustion engines or
electric motors.
All faulty, worn or damaged parts must be
replaced before using the machine.
Replace any illegible or damaged danger
signs and warnings on the machine. Your
STIHL specialist has a supply of
replacement stickers and all the other
spare parts.
Before initial operation, it must be ensured
– that the machine is in good operational
condition. This means that the covers
and guards must be in place and in
good condition.
– that it is connected electrically to a
properly installed socket.
– that the insulation of the electric cable,
extension cable, plug and connector is
in good condition.
– that the complete machine (motor
housing, guards, fastening elements,
blades, blade shaft, blade discs etc.) is
neither worn nor damaged.
– that there is no shredding material in
the machine and that the feed chute is
empty.
– that all screws, bolts, nuts and other
fastening elements are in place and
properly tightened. Tighten any loose
screws, bolts and nuts prior to initial
operation (observe tightening torques).
Only use the machine out-of-doors and not
close to walls or any other solid objects in
order to prevent the risk of injuries and
property damage (no escape for the user,
broken windows, scratched cars etc.).
The machine must placed in a stable
position on firm and level ground.
Do not use the machine on a paved or
gravel-covered surfaces, as ejected or
thrown-up material could cause injuries.
Before using the machine, always check
that it is properly closed. (Ö 11.2)
Make sure that you are familiar with the
On / Off switch so that you can react
quickly and correctly in any emergency
situation.
The splash guard in the feed chute must
cover the feed opening and must be
undamaged – replace the splash guard if
damaged.
Risk of injury:
Only operate the machine when properly
assembled. If parts of the machine
(e.g. wheels) are missing, the specified
safety distances are no longer maintained
and the stability of the machine may also
be reduced.
Before using the machine, always carry
out a visual check to ensure that it is in
good operating condition.
"Good operating condition" means that the
machine is fully assembled, in particular:
– Upper chute is installed on lower chute
– Feed chute is installed on basic unit and
both closure screws are fastened handtight
– Wheel carrier assembly is installed
– Both wheels are mounted
– All safety devices (ejection chute,
splash guard etc.) must be present and
functional
– Cutting unit (blade disc) is installed
– All blades are properly installed
The switch and safety devices installed in
the machine must not be removed or
bypassed.
Visually inspect the blade disc for damage
and deformation; replace if necessary.
4.6 Working with your machine
Never work when animals or
persons, particularly children,
are in the danger area.
Do not operate the machine in the rain or
during thunder storms, particularly when
there is a risk of lightning strike.
The risk of accidents is higher if the ground
is damp due to increased danger of
slipping.
Particular caution should be exercised
during working in order to prevent slipping.
If possible, avoid using the machine when
the ground is damp.
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Only work during the day or with good
artificial light.
Keep the working area neat and tidy at all
times. Remove tripping hazards such as
stones, branches, cables etc.
The operator should not stand any higher
than the level of the base of the machine.
Starting:
Place the machine in a stable and upright
position prior to starting. The machine
must never be operated in a horizontal
position.
Exercise care when switching on the
machine and observe the instructions in
the section "Operating the machine".
(Ö 10.)
Do not stand in front of the discharge
opening when starting the engine or
switching on the motor. There must be no
shredding material in the garden shredder
when it is started or switched on.
Shredding material may be ejected and
lead to injuries.
The machine must not be tilted during
start-up.
Avoid switching the machine on repeatedly
within a short period of time; particularly
avoid "playing" with the On / Off switch.
Risk of motor overheating.
Owing to the voltage fluctuations caused
by this machine during the start-up, other
devices connected to the same circuit may
be subject to interference in the case of
unfavourable power supply conditions.
In this case, appropriate steps should be
taken (e.g. connection to a different circuit
than the one used by the affected device,
or operation of the machine using a circuit
with a lower impedance).
Working:
Risk of injury!
Never place your hands or feet
above, underneath or on rotating
parts.
When the machine is running, never put
your face or any other part of your body
above the feed chute or in front of the
ejection opening. Always keep you head
and body away from the feed opening.
Never put your hands or any
other part of your body or
clothing into the feed chute or
ejection chute. There is a
considerable risk of injury to eyes, face,
fingers, hands etc.
Always maintain your balance and firm
footing. Do not stretch forward.
The splash guard must not be tampered
with (removed, folded up, jammed into
position, damaged etc.) during operation.
The operator must stand in the working
area described when feeding the
shredder. Stay inside the working area and
outside of the ejection zone at all times
during operation of the machine. (Ö 8.4)
Risk of injury:
Shredding material may be ejected back
up during operation. Always wear safety
glasses and keep your face away from the
feed opening.
Never tilt the machine when the engine or
motor is running.
If the machine falls over during operation,
immediately switch off the motor and
disconnect the mains plug.
Make sure that there is no shredding
material blocking the ejection chute, as
this could result in a poor shredding
performance or kickbacks.
When feeding the garden shredder, pay
particular attention to ensuring that no
foreign objects such as bits of metal,
stones, plastic, glass, etc. get into the
shredding chamber as this could result in
damage or kickbacks from the feed chute.
Remove blockages for the same reason.
Kickbacks can occur when feeding the
garden shredder with branch material.
Wear gloves.
Beware of the cutting tool
running on for several seconds
before coming to a standstill.
Switch off the motor, disconnect
the mains plug and allow all
rotating tools to reach a complete standstill
– before leaving the machine unattended
– before repositioning, lifting, carrying,
tilting, pushing or pulling the machine
– before unscrewing the closure screws
and opening the machine
– before transporting the machine
– before removing blockages at the
cutting unit, in the feed chute or in the
discharge chute
– before carrying out any work on the
blade disc
– before checking or cleaning the
machine or before carrying out any
other work on it.
If foreign objects get into the cutting tool or
if the machine makes unusual noises or
vibrates in an unusual way, switch off the
motor immediately and allow the machine
to come to rest. Detach the mains plug,
remove the feed chute and perform the
following steps:
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– Check the machine, in particular the
cutting unit (blade, blade discs, blade
mounting, blade fastening screw,
clamping ring) for damage and have
any necessary repairs carried out by a
technician before starting again and
working with the machine.
– Check that all parts of the cutting unit
are seated securely, retighten the
screws if necessary (observe tightening
torques).
– Have damaged parts replaced or
repaired by a technician; the parts must
be of similar quality.
4.7 Maintenance and repairs
Before carrying out any
maintenance operations
(cleaning, repair etc.) and
before checking whether the
electric cable is entwined or damaged,
park the machine on firm, level ground,
switch off the motor and disconnect the
mains plug.
Allow the machine to cool down for
approx. 5 minutes before performing any
maintenance operations.
Before performing maintenance of the
cutting tool, ensure that the cutting tool can
still be turned despite the locking device,
even when the power supply is switched
off.
The power cable must only be repaired or
replaced by authorised electricians.
Cleaning:
The complete machine must be cleaned
thoroughly following use. (Ö 11.1)
Never use high-pressure cleaners and do
not clean the machine under running water
(e.g. using a garden hose).
Do not use aggressive cleaning agents.
These can damage plastics and metals,
impairing the safe operation of your STIHL
machine.
Maintenance operations:
Only maintenance operations described in
this instruction manual may be carried out.
Have all other work performed by a
specialist dealer.
If you do not have the necessary expertise
or auxiliary equipment, please always
contact a specialist dealer.
STIHL recommends that you have
maintenance operations and repairs
performed exclusively by a STIHL
specialist dealer.
STIHL specialist dealers regularly attend
training courses and are provided with
technical information.
Only use tools, accessories or
attachments approved for this machine by
STIHL or technically identical parts.
Otherwise, there may be a risk of
accidents resulting in personal injury or
damage to the machine. If you have any
questions, please consult a specialist
dealer.
The characteristics of original STIHL tools,
accessories and spare parts are optimally
adapted to the machine and the user's
requirements. Genuine STIHL spare parts
can be recognised by the STIHL spare
parts number, by the STIHL lettering and,
if present, by the STIHL spare parts
symbol. On smaller parts, only the symbol
may be present.
Always keep warning and information
stickers clean and readable. Damaged or
missing stickers must be replaced by new,
original plates from your STIHL specialist
dealer. If a component is replaced with a
new component, ensure that the new
component is provided with the same
stickers.
Only perform work on the cutting unit when
wearing thick work gloves and exercising
extreme care.
Ensure that all nuts, pins and screws,
especially all the cutting unit screws, are
securely tightened, so that the machine is
in a safe operating condition.
Check the entire machine for wear or
damage on a regular basis, particularly
before extended periods when the
machine is not in use (e.g. over winter).
For safety reasons, worn or damaged
parts must be replaced immediately to
ensure that the machine is always in a safe
operating condition.
Components or guards that are removed
for maintenance operations must be
properly reinstalled immediately.
4.8 Storage for prolonged periods without operation
Allow the machine to cool for approx. 5
minutes before storing it in an enclosed
space.
Ensure that the machine is protected from
unauthorised use (e.g. by children).
Thoroughly clean the machine before
storage (e.g. winter break).
Store the machine in good operational
condition.
Only transport the garden shredder with
the feed chute fitted.
Risk of injury due to exposed blades.
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4.9 Disposal
Waste products can be harmful to people,
animals and the environment. They must
consequently be disposed of properly.
Consult your recycling centre or your
specialist dealer for information on the
proper disposal of waste products. STIHL
recommends STIHL specialist dealers.
Ensure that old machines are properly
disposed of. Render the machine
unusable prior to disposal. In order to
prevent accidents, always remove the
power cable and electric cable to the
motor.
Risk of injury!
Switch off the motor and disconnect the power cable
from the machine before
working on the cutting tool,
before performing maintenance and cleaning work,
before checking whether the
electric cable is entwined or
damaged and before leaving
the machine unattended.
Wear hearing protection.
Wear safety glasses.
Wear work gloves.
5. Description of symbols
Caution!
Read the instruction manual before initial use.
Risk of injury!
Keep other persons out of
the danger area.
Risk of injury!
Rotating tools.
Keep hands and feet away
from apertures when
machine is running.
Risk of injury:
Do not climb onto the
machine.
Risk of injury:
Never put your hands or any
other part of your body or
clothing into the feed chute
or ejection chute.
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6. Standard equipment
EN
Item Designation Qty.
A Basic unit with lower chute 1
B Wheel carrier 1
C Wheel axle 1
D Wheel lock 2
E Bolt, M6 x 55 2
F Hexagon nut 2
H Quick fastener 2
I Wheel 2
J Wheel cap 2
K Square nut 2
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Item Designation Qty.
L Washer Ø 17 mm 4
M Bolt, M6 x 50 2
N Discharge flap 1
O Ejection chute extension 1
P Strip 1
Q Pin 2
R Torx screw P5 x 20 3
S Upper chute 1
T Safety screw 4
U Torx screw P5 x 10 2
Item Designation Qty.
V Combination spanner 1
W Cable clip 1
x Instruction manual 1
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7. Preparing the machine for operation
7.1 Attaching the wheel axle and wheels
● Push wheels (I) onto the mounted
wheel axle.
Quick fasteners must be pushed
onto the wheel axle only to the
extent that the wheels can still turn
freely.
Quick fasteners are not reuseable
following removal.
● Push quick fastener (H) onto the wheel
axle with the convex side facing
outwards.
● Press wheel caps (J) onto the wheels.
● Attach wheel axle (C) with wheel
locks (D), bolts (E) and hexagon
nuts (F) to wheel carrier (B) and tighten
using combination spanner (V)
(4 - 6Nm).
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7.2 Installing the chassis and ejection chute
EN
1 Install the ejection chute extension
● Place basic unit (A) onto a block of
wood with a height of approx. 1520 cm.
● Engage hooks (1) of ejection chute
extension (O) into openings (2) on the
rear of basic unit (A) and turn the
extension downwards so that the front
part of the basic unit is precisely
inserted in the opening of the ejection
chute extension.
● Fasten screws (U) in the lugs of
hooks (1) (1 - 2Nm).
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2 Attach the chassis
● Press square nuts (K) and washers (L)
in the recesses provided on the basic
unit (3).
● Push the chassis with both wheel
carriers (4) up to the stop in the guides
on the basic unit (5).
● Push bent section of wheel carrier (6)
into the recess on the ejection chute
extension (7).
● Insert the screws (M) with washers (L)
the openings in the wheel carriers (8)
and fasten using combination
spanner (V) (4 - 6Nm).
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3 Install the strip
The bent section of wheel
carrier (6) must be precisely
inserted in the recesses on ejection
chute extension (7).
● Position strip (P) and screw in
screws (R) (1 - 2Nm).
● Lift the machine into the upright
position.
4 Install the discharge flap
● Attach discharge flap (N) and press in
pin (Q) (use a plastic hammer if
necessary).
Ensure that ribs (9) inside the discharge
flap on the left and right are all correctly
located in the guide groove of ejection
chute extension (10).
7.3 Opening and closing the discharge
flap
Opening the discharge flap:
16
● For shredding, fold discharge flap (1)
upwards and allow tab (2) to engage in
the ejection chute extension.
0478 201 8313 B - EN
Closing the discharge flap:
● For transport or space-saving storage,
lift tab (2) slightly and fold away
discharge flap (1) downwards.
7.4 Attaching the upper chute
The chute can only be installed by a
specialist dealer using special
tools. STIHL recommends STIHL
specialist dealers.
● Place upper chute (S) with symbol (1)
facing forwards on lower chute (3) in
the direction of closure screws (2).
We recommend following the
described installation sequence to
prevent the splash guard slipping
off when screwing in the screws.
● Screw in screws (T) in the sequence
shown (1 2 3 4).
7.5 Mounting the cable clip
● Press electric cable (1) into the
designated recesses in cable clip (2) as
shown.
8. Notes on working with the machine
8.1 What material can be processed?
– Feeding the garden shredder. (Ö 8.8)
GHE 150, GHE 250 S:
Tree and hedge cuttings as well as thick
branch material with side shoots.
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GHE 250:
Organic plant trimmings such as fruit and
vegetable cuttings, flower cuttings, leaves,
tree and hedge cuttings, as well as thick
branches with side shoots and twigs.
Tree and hedge cuttings should be
processed when fresh, as the
shredding performance is better
with fresh than with dried-out or wet
material.
8.2 What material cannot be processed?
Stones, glass, bits of metal (wire, nails,
etc.) or plastic must not be fed into the
garden shredder.
As a general rule:
Any materials that do not belong on the
compost heap should not be processed
using the garden shredder.
8.3 Maximum branch diameter
The data relates to freshly cut branch
material:
Maximum branch diameter
GHE 150, GHE 250, GHE 250 S: 35 mm
8.4 Working area for operator
● For safety reasons, the operator must
stay within the working area (grey
area X) for the entire operating period
(while the motor is switched on or the
engine is running), particularly in order
to prevent injuries due to shredding
material that is ejected backwards.
8.5 Correct machine load
The load on the motor or engine of the
garden shredder must never cause the
speed to drop significantly. Always feed
the garden shredder continuously and
steadily. If the speed drops when working
with the garden shredder, stop feeding the
machine in order to relieve the load on the
motor or engine.
Only switch off the motor when
there is no longer any shredding
material in the machine. Otherwise,
the blade disc may become blocked
when operation is resumed.
8.6 Overload protection
If an overload of the motor occurs during
operation, the built-in overload protection
device automatically switches off the
motor.
The garden shredder can be started up
again after a cooling period of
approx. 10 minutes. Frequent triggering
of the overload protection may be
attributable to the following causes:
– Unsuitable electric cable (Ö 10.1)
– Power overload
– Machine overloaded due to excessive
quantities of shredding material or blunt
blades
8.7 If the cutting unit of the garden shredder is blocked
If the cutting unit of the garden shredder
becomes blocked during shredding,
immediately switch off the motor and
disconnect the power cable. Then remove
the feed chute and eliminate the cause of
the fault.
18
0478 201 8313 B - EN
8.8 Feeding the garden shredder
Risk of injury!
Carefully read the "For your safety"
section (Ö 4.), "Working with your
machine" sub-section (Ö 4.6) in
particular, and follow all the safety
instructions before feeding the
garden shredder. It is only
permitted for one person to feed the
garden shredder.
Risk of injury!
Never reach into the feed
opening.
● Before feeding the garden shredder,
note the working area. (Ö 8.4)
● Start the garden shredder. (Ö 10.2)
Damp or wet soft material will
cause blockages in the machine
more quickly. For this reason, feed
the garden shredder more slowly
and pay particular attention to the
motor speed. It should not drop
during feeding.
Hard material:
Cut up thick branches and
branches with side shoots (note the
maximum branch thickness
(Ö 8.3)) beforehand using loppers.
● Feed tree and hedge cuttings as well as
branch material slowly into the feed
opening (1). The hard material is
automatically drawn in by the machine.
Risk of injury!
The inclined blade unit can cause
branches to kick back.
In order to prevent injuries caused
by kickback, the garden shredder
must be fed with hard material in
the correct manner:
Insert longer branches at a slight
angle and guide them along the
right-hand chute wall to the blade
unit in accordance with the
symbol (2).
Observe the correct motor load.
(Ö 8.5)
9.2 Safety interlock
The motor/shredding tool may only be
operated when the feed chute has been
properly closed. If the right closure screw
(machine viewed from the front) becomes
loose during operation, the motor is
switched off automatically and after a few
seconds the shredding tool comes to a
standstill.
9.3 Motor run-down brake
The motor run-down brake shortens the
run-down time from when the machine is
switched off until the blades stop to a few
seconds.
9.4 Protective covers
The garden shredder is equipped with
protective covers in the feeding and
ejection areas. These include the
complete feed chute with the upper chute
and splash guard, the ejection chute
extension and the discharge flap.
The protective covers ensure that a safe
distance is maintained from the shredding
blades.
EN
Soft material:
● Throw organic plant trimmings such as
fruit and vegetable waste, flower
cuttings, leaves, thin branches, etc. into
the feed opening (1).
0478 201 8313 B - EN
9. Safety devices
9.1 Motor restart inhibitor
The machine can only be started via the
switch and not by plugging the electric
cable into the mains socket.
10. Operating the machine
Risk of injury:
Carefully read the section entitled
"For your safety" (Ö 4.) and follow
all the safety instructions before
operating the garden shredder.
19
10.1 Electrical connection of garden
shredders
Risk of injury!
Observe the instructions in the
"Warning – dangers caused by
electrical current" section (Ö 4.2).
Power supply and operating voltage must
correspond (see rating plate).
The power cable must be adequately
protected by fuse in line with the
respective national electrical installation
regulations. (Ö 16.)
Only electric cables which are no lighter
than rubber sheathed cables H07 RN-F
may be used.
The minimum cross-section of the power
cable must be 3x1.5mm² for a length of
up to 25 m or 3x2.5mm² for a length of
over 25 m.
The plug connections must be splash
proof.
Unsuitable extension cables lead to a loss
of power and may result in damage to the
motor.
Extension cable plugs and connectors
must conform to the standard AS/NZS
3112.
Use a splash-proof coupling box
(protection class IPX4) when using an
extension cable.
This machine is intended for operation with
a power supply having a system
impedance of Z
at the transfer point
max
(house connection) of maximum
0.323 ohms at 50 Hz.
The user must ensure that the machine is
only operated with a power supply which
meets this requirement.
If necessary, this information can be
obtained from the local electric power
company.
Your electrician can provide further
information on mains connection.
10.2 Switching on the garden shredder
There must be no shredding
material in the machine when it is
switched on as it may be expelled.
The blade disc locking device must
always be tilted back to the stop.
(Ö 11.4)
● Connect the power cable.
● Press green button (1) on the switch.
The garden shredder starts up.
Only begin to feed the shredding
material once the motor has
reached the maximum speed (idling
speed).
10.3 Switching off the garden shredder
Risk of injury!
Do not step into the ejection area
when switching off!
Stand to the side of the machine to
do so.
Beware of the work tools running
on for several seconds before
coming to a standstill after
switching off the motor.
● Press red button (1) on the switch.
The garden shredder motor is switched off
and braked automatically.
Only switch off the motor when
there is no longer any shredding
material in the machine. Otherwise,
the blade disc may become blocked
when operation is resumed.
10.4 Shredding
● Push the garden shredder onto firm and
level ground and set down safely.
20
0478 201 8313 B - EN
● Put on thick gloves, safety glasses and
hearing protection.
● Open the discharge flap. (Ö 7.3)
● Connect the power cable of the garden
shredder.
● Start the garden shredder. (Ö 10.2)
● Wait until the garden shredder has
reached its maximum speed (idling
speed).
● Feed the garden shredder with
shredding material in the correct way.
(Ö 8.8)
● Switch off the garden shredder.
(Ö 10.3)
11. Maintenance
Risk of injury:
Carefully read the section "For your
safety" (Ö 4.), particularly the
subsection "Maintenance and
repairs" (Ö 4.7), and follow all
safety instructions exactly before
performing any maintenance or
cleaning operations on the
machine.
Disconnect the mains plug before
performing any maintenance
operations.
11.1 Cleaning the machine
Maintenance interval:
After each use
Clean the machine thoroughly each time it
has been used. Care of the machine will
protect it against damage and extend its
service life.
Electric motors are splashproof.
Protect shredding tools, incl. the shredding
chamber using a commercially available
anti-corrosion agent (e.g. rapeseed oil).
It is only permitted to clean the machine in
the position shown.
● Remove the feed chute. (Ö 11.3)
Remove dirt from the cooling air guide
(inlet slots) on the motor housing to ensure
that the motor is adequately cooled.
Never spray water onto
motor or engine components,
seals, bearing points or
electrical parts such as
switches. This would result in
expensive repairs.
If you are unable to remove
the dirt and accumulated
deposits with a brush, a damp
cloth or a stick, STIHL
recommends the use of a
special cleaner (e.g. STIHL special
cleaner).
Do not use aggressive cleaning agents.
Clean the blade discs regularly.
11.2 Installing the feed chute
The closure screws are securely
fastened to the feed chute.
EN
● Attach feed chute (1) to the fastening
hooks on basic unit (2) and pivot
forwards.
● Tighten both closure screws (3)
simultaneously.
11.3 Removing the feed chute
0478 201 8313 B - EN
21
● Loosen both closure screws (1) until
they turn freely. They remain on the
feed chute.
● Pivot feed chute (2) to the rear and
remove.
11.4 Locking the blade disc
Risk of injury!
Always wear gloves!
Do not touch the blades
until they have come to a
standstill.
11.5 Removing the blade set
22
● Remove the feed chute. (Ö 11.3)
● Turn blade disc (1) until recess (2) is
located in front of locking device (3).
● Fold up locking device (3).
0478 201 8313 B - EN
● Lock blade disc (5). (Ö 11.4)
● Loosen bolt (1) using combination
spanner (V).
● Remove bolt (1), retaining washer (2),
clamping ring (3), wing blade (4), wing
blade (6, only with GHE 250) and blade
disc (5).
● Remove the reversible blade. (Ö 11.8)
● GHE 250: Unscrew bolts (7) and
remove together with nuts (9). Remove
shredding blades (8) downwards.
11.6 Installing the blade set
The installation sequence and
specified tightening torque must be
observed.
● Install the reversible blade on the blade
disc. (Ö 11.8)
● GHE 250: Position shredding
blades (8) on the underside of blade
disc (5) and tighten using nuts (9) and
bolts (7) (10 Nm).
● Insert blade disc (5) in the housing and
lock. (Ö 11.4)
● Install wing blade (6, only on GHE 250),
wing blade (4), clamping ring (3) and
retaining washer (2) and tighten using
bolt (1) (50 Nm).
● Fold the locking device back so that the
blade disc can turn freely again.
(Ö 11.4)
● Install the feed chute. (Ö 11.2)
11.7 Blade maintenance
Risk of injury!
Always wear thick
gloves!
Maintenance interval:
Before each use
● Remove the feed chute. (Ö 11.3)
● Lock the blade disc. (Ö 11.4)
● Check the blades for damage (notches
or cracks) and wear; reverse or replace
if necessary.
Wear limits of the blades:
The blades must be reversed or
replaced before the specified wear
limits are reached. STIHL
recommends STIHL specialist
dealers.
1 Reversible blade
● On the blades, measure the
distance (A) between the bore to the
edge of the blade at several points.
Minimum clearance:
A=6mm
EN
0478 201 8313 B - EN
23
2 Wing blade
● Measure the blade width (B) at the
upward-pointing curved edge of the
wing blade.
Minimum blade width:
B=15mm
4 Shredding blades (GHE 250)
● Measure the blade width (D) at the
upward-pointing curved edge of the
shredding blade.
Minimum blade width:
D=13mm
3 Wing blade (GHE 250)
● Measure the blade width (C) at the
upward-pointing curved edge of the
wing blade.
Minimum blade width:
C=19mm
24
11.8 Reversing the blades
Blunt reversible blades can be
reversed once. Always reverse
both blades.
● Remove the blade set. (Ö 11.5)
● Unscrew bolts (1) and remove together
with nuts (2).
● Remove blade (3) upwards.
● Clean the blade disc.
● Reverse blade (3) and place onto the
blade disc with the sharp edge exposed
and align the bores.
● Insert bolts (1) through the bores and
screw on nuts (2). Tighten nuts (2) to
10 Nm.
● Install the blade set. (Ö 11.6)
0478 201 8313 B - EN
Sharpening the blades:
Blades which are blunt on both sides must
be sharpened before resuming work.
In order to ensure optimum machine
operation, the blades should only be
sharpened by a technician. STIHL
recommends STIHL specialist dealers.
● Remove the blades for sharpening.
● Cool the blades when sharpening,
e.g. with water. The blade must not be
allowed to display blue colouring, as
this would reduce its cutting quality.
● Sharpen the blade evenly to prevent
vibrations due to imbalance.
● Check blades for damage before
installing: the blades must be replaced
if notches or cracks are visible or if the
blades have reached the wear limits.
● Sharpen blades at a sharpening angle
of 30°.
● Sharpen the blades against the cutting
edge.
● After sharpening, remove any
sharpening burr at the cutting edge
using fine sandpaper.
● Observe the tightening torques
contained in the "Reversing the blades"
section when installing the blades.
11.10 Storage and winter break
Store the garden shredder in a dry and
locked place that is generally free of dust.
Make sure that the machine is kept out of
the reach of children.
Only store the garden shredder in good
operating condition and with the feed
chute fitted.
Note the following points when storing the
garden shredder for extended periods
(over winter):
● Thoroughly clean all external parts of
the machine.
● Thoroughly lubricate/grease all moving
parts.
12. Transport
Risk of injury!
Before transporting, carefully read
and observe the section "For your
safety", in particular the
"Transporting the machine" section.
(Ö 4.4)
12.1 Winding up the cable
● Attach cable clip (1) at the edge of
opening (2).
● Store the rest of the electric cable on
the cable clip.
EN
11.9 Electric motor and wheels
The electric motor is maintenance-free.
The wheel bearings are maintenance-free.
0478 201 8313 B - EN
25
12.2 Pulling or pushing the garden shredder
● Hold the garden shredder at the upper
chute (1) and tilt to the rear.
● The garden shredder can be pulled or
pushed slowly (walking pace).
12.3 Lifting or carrying the garden
shredder
At least two persons are always
required to lift and carry the
machine.
Wear suitable protective clothing;
the lower arms and upper part of
the body must be fully covered.
● Secure the machine against slipping
using suitable fastening materials.
Attach ropes or straps to wheel
carrier (1) or feed chute (2).
● 1st person: Hold the garden shredder at
the handles on the upper chute (1).
● 2nd person: Hold the garden shredder
at the strip of the ejection chute
extension (2).
● Lift the garden shredder
simultaneously.
12.4 Transporting the garden shredder
on a load floor
26
0478 201 8313 B - EN
13. Minimising wear and preventing damage
Important information on maintenance
and care of the product group
Electric garden shredder (STIHL GHE)
STIHL assumes no liability for material or
personal damage caused by the nonobservance of information contained in the
operating instructions, in particular with
regard to safety, operation and
maintenance, or which arise through the
use of unauthorised attachment or spare
parts.
Please always observe the following
important information for the prevention of
damage or excessive wear to your STIHL
machine:
1. Wearing parts
Some parts of the STIHL machine are
subject to normal wear even when used
properly and must be replaced in due time
depending on type and duration of use.
These include:
–Blade
–Blade disc
2. Compliance with the information in
this instruction manual
The STIHL machine must be used,
maintained and stored with the care
described in this instruction manual. Any
damage caused by non-compliance with
the safety, operating and maintenance
instructions is the sole responsibility of the
user.
This applies in particular to:
– Inadequately dimensioned power
cables (cross section)
– Incorrect electrical connection (voltage)
– Product modifications not approved by
STIHL
– Use of tools or accessories which are
not approved or suitable for the
machine, or are of inferior quality
– Improper use of the product
– Use of the product for sporting or
competitive events
– Resultant damage due to continued use
of the product with defective
components.
3. Maintenance operations
All operations listed in the section
"Maintenance" must be performed
regularly.
If these maintenance operations cannot be
carried out by the user, a specialist dealer
must be commissioned to perform them.
STIHL recommends that you have
maintenance operations and repairs
performed exclusively by a STIHL
specialist dealer.
STIHL specialist dealers regularly attend
training courses and are provided with
technical information.
If these operations are neglected, faults
may arise which are the responsibility of
the user.
These include:
– Damage to the motor as a result of
inadequate cleaning of the cooling air
guide (inlet slots, cooling ribs, fan
wheel).
– Corrosive and other resultant damage
caused by incorrect storage.
– Damage to the machine through the
use of inferior-quality spare parts.
– Damage due to untimely or inadequate
maintenance or damage due to
maintenance or repair work not
performed in the workshops of
specialist dealers.
14. Standard spare parts
Reversible blade:
6008 702 0121
Wing blade:
6008 702 0300
GHE 150, GHE 250 S
Blade disc assembly:
6008 700 5120
GHE 250
Blade disc assembly:
6008 700 5117
Wing blade:
6008 702 0310
Shredding blades:
6008 702 0110
15. Environmental protection
Shredding material should be
composted and not disposed of
in household waste.
The machine, its packaging and
accessories are all produced
from recyclable materials and must be
disposed of accordingly.
By disposing of materials separately, and
in an environmentally friendly manner,
valuable resources can be re-used. For
this reason, the machine should be
disposed of for recycling at the end of its
useful life.
EN
0478 201 8313 B - EN
27
16. Technical specifications
GHE 150.0/GHE 250.0/GHE 250.0 S:
Motor, design Electric motor
Power 2200 W
Amperage rating 10 A
Rated voltage 230 V~
Speed 2800 rpm
Main fuse
Frequency 50 Hz
Protection class I
Type of protection Splash proof
Operating conditions P40
GHE 150.0:
In accordance with
Directive
2000/14/EC:
Guaranteed sound
power level L
In accordance with
Directive
2006/42/EC:
Sound pressure level
at workplace L
Uncertainty K
Bolt tightening torques:
Blade disc 50 Nm
Reversible blade 10 Nm
Weight 27 kg
L/W/H 95/48/114 cm
1
10 A
(IPX4)
40 s load time
60 s idle time
WAd
pA
pA
99 dB(A)
89 dB(A)
2 dB(A)
GHE 250.0/GHE 250.0 S:
In accordance with
Directive
2000/14/EC:
Guaranteed sound
power level L
WAd
103/100 dB(A)
In accordance with
Directive
2006/42/EC:
Sound pressure level
at workplace L
Uncertainty K
pA
pA
92/90 dB(A)
3dB(A)
Bolt tightening torques:
Blade disc 50 Nm
Reversible blade 10 Nm
Shredding blades
2
10 Nm
Weight 29/28 kg
L/W/H 107/48/143 cm
1) Caution!
In the case of mains fuses of less
than 15 A, these may be tripped during start-up or in the case of high
load operation of the machine.
2) For model GHE 250.0
17. Troubleshooting
# If necessary, contact a specialist
dealer; STIHL recommends STIHL
specialist dealers.
Fault:
Motor does not start
Possible cause:
– Motor overload protection activated
– No mains voltage
– Electric cable, plug, plug connector or
switch defective
– Feed chute not properly closed - safety
cut-off switch actuated (motorstop)
– Blade disc blocked
– Locking device is not reset
Remedy:
– Allow machine to cool down (Ö 8.6)
– Check power cable and fuse
# (Ö 10.1)
– Check cable, plug, connector and
switch and replace if necessary (by
electrician) # (Ö 10.1)
– Close feed chute properly and tighten
screws (Ö 11.2)
– Remove feed chute and remove
shredder deposits from the housing
(Important: disconnect the power cable)
(Ö 11.3)
– Reset locking device (Ö 11.4)
Fault:
Reduced shredding performance
Possible cause:
– Blunt blades
Remedy:
– Reverse, re-sharpen or replace
shredding blades # (Ö 11.7)
28
0478 201 8313 B - EN
18. Service schedule
18.1 Handover confirmation
18.2 Service confirmation
Please hand this instruction manual
to your STIHL specialist dealer in
the case of maintenance operations.
He will confirm the service operations
performed in the pre-printed boxes.
EN
1
Service performed on
Next service date
0478 201 8313 B - EN
29
STIHL GHE 150, GHE 250, GHE 250 S
B
0478 201 8313 B
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