Stihl HL 94 User manual

STIHL HL 94 Instruction Manual

Original Instruction ManualPrinted on chlorine-free paper
Printing inks contain vegetable oils, paper can be recycled.
© ANDREAS STIHL AG & Co. KG, 2021 0458-519-0121-E. VA0.H21. 0000008109_010_GB
HL 94, HL 94 K
English
1
This instruction manual is protected by copyright. All rights reserved, especially the rights to reproduce, translate and process
with electronic systems.
Contents
Dear Customer,
Thank you for choosing a quality
engineered STIHL product.
It has been built using modern
production techniques and
comprehensive quality assurance.
Every effort has been made to ensure
your satisfaction and trouble-free use of
the product.
Please contact your dealer or our sales
company if you have any queries
concerning this product.
Your
Dr. Nikolas Stihl
Guide to Using this Manual 2
Safety Precautions and Working
Techniques 2
Using the Unit 8
Approved Power Tool Attachments 10
Assembling the Unit 10
Fuel 12
Fueling 13
Adjusting the Cutter Bar 13
Fitting the Harness 15
Starting / Stopping the Engine 16
Operating Instructions 18
Cleaning the Air Filter 18
Adjusting the Carburetor 19
Spark Plug 19
Lubricating the Gearbox 20
Sharpening Instructions 21
Storing the Machine 22
Inspection and Maintenance by
User 22
Inspections and Maintenance by
Dealer 22
Maintenance and Care 23
Minimize Wear and Avoid Damage 25
Main Parts 26
Specifications 27
Maintenance and Repairs 29
Disposal 29
EC Declaration of Conformity 29
UKCA Declaration of Conformity 30

HL 94, HL 94 K
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2
Pictograms
The meanings of the pictograms
attached to the machine are explained in
this manual.
Depending on the model concerned, the
following pictograms may be attached to
your machine.
Symbols in text
WARNING
Warning where there is a risk of an
accident or personal injury or serious
damage to property.
NOTICE
Caution where there is a risk of
damaging the machine or its individual
components.
Engineering improvements
STIHL's philosophy is to continually
improve all of its products. For this
reason we may modify the design,
engineering and appearance of our
products periodically.
Therefore, some changes, modifications
and improvements may not be covered
in this manual.
Observe all applicable local safety
regulations, e.g. by trade organizations,
social insurance institutions, labor safety
authorities etc.
If you have never used a power tool
before: Have your dealer or other
experienced user show you how to
operate your machine – or attend a
special course to learn how to operate it.
Minors are not allowed to work with the
power tool – except adolescents above
16 years of age who are instructed
under supervision.
Children, animals and onlookers must
not be allowed near the machine.
When not using the machine, it must be
laid down in such a way that it does not
endanger anyone. Ensure that the
machine cannot be used without
authorization.
Guide to Using this Manual
Fuel tank; fuel mixture of
gasoline and engine oil
Operate manual fuel
pump
Filler hole for gear
lubricant
Safety Precautions and
Working Techniques
Because a long-reach
hedge trimmer is a high-
speed, fast-cutting power
tool with very sharp cut-
ting blades and a long
reach, special safety pre-
cautions must be
observed during
operation.
It is important that you
read and understand the
User Manual before com-
missioning and keep it in
a safe place for future ref-
erence. Non-compliance
with the User Manual
may cause serious or
even fatal injury.

HL 94, HL 94 K
English
3
The user is responsible for accidents or
risks involving third parties or their
property.
Lend or rent your power tool only
together with this User Manual and only
to persons who are familiar with this
model and its operation.
The use of machines that emit noise
may be limited to certain hours of the
day as specified by national and/or
regional or local regulations.
Anyone operating the machine must be
well rested, in good physical health and
in good mental condition.
If you have any condition that might be
aggravated by strenuous work, check
with your doctor before operating a
machine.
If you have a pacemaker: The ignition
system of your machine produces an
electromagnetic field of very low
intensity. This field may interfere with
some pacemakers. STIHL recommends
that persons with pacemakers consult
their physician and the pacemaker
manufacturer to reduce any health risk.
Anyone who has consumed alcohol or
drugs or medicines affecting their ability
to react must not operate a power tool.
Use the machine only for cutting
hedges, shrubs, bushes, scrub and the
like.
Other uses are not permitted and may
lead to accidents or damage to the
machine. Never attempt to modify your
power tool in any way since this may
result in accidents or damage to the
machine.
Only use cutting blades and accessories
that are explicitly approved for this
power tool by STIHL or are technically
identical. If you have any questions in
this respect, consult your dealer. Use
only high-quality parts and accessories.
in order to avoid the risk of accidents
and damage to the machine.
STIHL recommends the use of genuine
STIHL tools and accessories. They are
specifically designed to match the
product and meet your performance
requirements.
Never attempt to modify your power tool
in any way since this may increase the
risk of personal injury. STIHL excludes
all liability for personal injury and
damage to property caused while using
unauthorized attachments.
Do not use a high-pressure washer to
clean the power tool. The solid jet of
water may damage parts of the unit.
Do not spray the machine with water.
Clothing and equipment
Wear proper protective clothing and
equipment.
WARNING
Wear "personal" sound protection, e.g.
ear defenders.
Wear a safety hard hat where there is a
danger of head injuries from falling
objects.
STIHL can supply a comprehensive
range of personal protective equipment.
Transporting the machine
Always stop the engine.
Clothing must be robust
but allow complete free-
dom of movement. Wear
close-fitting clothes such
as a boiler suit, not a
loose jacket.
Do not wear clothing
which could become
trapped in wood, brush or
moving parts of the
machine. Do not wear a
scarf, necktie or jewelry.
Tie up and confine long
hair above your
shoulders.
Wear safety boots with
steel toe caps and non-
slip soles.
To reduce the risk of eye
injuries, wear close-fit-
ting safety glasses in
accordance with Euro-
pean Standard EN 166.
Make sure the safety
glasses are a snug fit.
Wear sturdy protective
gloves made of a resist-
ant material (e. g.
leather).

HL 94, HL 94 K
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Always fit the scabbard over the blades
before transporting the machine even for
short distances.
For machines with a defined transport
position: Move the cutter bar into
transport position and have it engaged.
Carry the power tool properly balanced
by the shaft – cutting blades behind you.
Avoid touching hot parts of the machine
and gear housing – risk of burns!
By vehicle: When transporting in a
vehicle, properly secure your machine to
prevent turnover, damage and fuel
spillage.
Refueling
Always shut off the engine before
refueling.
Do not fuel a hot engine – fuel may spill
and cause a fire.
Open the fuel cap carefully to allow any
pressure build-up in the tank to release
slowly and avoid fuel spillage.
Only refuel the machine in a well
ventilated place. If fuel has been spilled,
immediately clean the machine – do not
allow your clothes to be splashed with
fuel. If that happens, change your
clothes at once.
This helps reduce the risk of unit
vibrations causing an incorrectly
tightened fuel cap to loosen or come off
and spill quantities of fuel.
Check for leaks. Do not start the engine
if there is a fuel leak – serious or fatal
burns could result!
Before starting
Check that your power tool is properly
assembled and in good condition – refer
to appropriate chapters in the User
Manual:
–Check the fuel system for leaks,
especially the visible parts, e. g.,
fuel cap, hose connections, manual
fuel pump (only in machines with a
manual fuel pump). In case of
leakage and damage, do not start
the engine – risk of fire! Have the
machine serviced by a dealer
before using it
–The stop switch must be easy to
push
–Check the rotary knob for warm
start, throttle trigger lockout, throttle
trigger and set wheel for smooth
action – the throttle trigger must
return automatically to idle position.
From the warm start knob position
g, it must return to the run
position F when the throttle trigger
lockout and throttle trigger are
pressed simultaneously
–Check that the spark plug boot is
secure – a loose boot may cause
sparking that could ignite
combustible fumes and cause a fire!
–Cutting blades must be properly
tightened and in safe operating
condition (clean, sharp, not bent or
warped), correctly mounted and
thoroughly sprayed with STIHL
resin solvent (lubricant)
–For machines with adjustable cutter
bar: The adjustment mechanism
must be snapped into the start
position
–For machines with a defined
transport position (cutter bar folded
against the shaft): Never start the
machine in the transport position
–Never attempt to modify the controls
or safety devices.
–Keep the handles dry and clean –
free from oil and dirt – this is
important for safe control of the
machine
–Adjust carrying harness and
handles in accordance with body
height. Observe the chapter "Fitting
the Harness"
To reduce the risk of personal injury, do
not operate your power tool if it is
damaged or not properly assembled!
To prepare for emergencies when using
a harness: Practice setting down the
machine quickly. To avoid damage, do
not throw the machine to the ground
when practicing.
Gasoline is highly flam-
mable – keep away from
fire or flame – do not spill
any fuel – no smoking.
After refueling, close the
fuel cap as tightly as
possible.

HL 94, HL 94 K
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5
Starting the engine
Start the engine at least 3 meters from
the fueling spot, outdoors only.
Place the power tool on firm ground in
an open area. Make sure you have good
balance and secure footing. Hold the
power tool securely. The cutting blades
must be clear of the ground and all other
obstructions because they may begin to
run when the engine starts.
Your power tool is designed to be
operated by one person only. Do not
allow other persons in the work area –
even when starting.
Avoid contact with the cutting blades –
risk of injury!
Do not drop-start the engine – start it as
described in the User Manual. Note that
the cutting blades continue to run for a
short period after you let go of the
throttle trigger (flywheel effect).
Check engine idling: The cutting blades
must remain at a standstill when the
engine idles – throttle trigger released.
Keep easily combustible materials (e.g.,
wood chips, bark, dry grass, fuel) away
from hot exhaust gases and the hot
muffler surface – risk of fire!
Holding and guiding the machine
Always hold the unit firmly with both
hands on the handles.
Make sure you always have a secure
footing and hold the machine so that the
cutting blades are always facing away
from your body.
Some versions of the machine can be
carried on a harness to relieve the
weight on the operator's arms.
Models with Loop Handle
Keep your right hand on the control
handle and your left hand on the loop
handle on the shaft – this applies to left-
handed people as well. Wrap your
fingers and thumbs around the handles.
Machines with handle hose
Right hand on control handle, left hand
on handle hose on drive tube, even if
you are left-handed. Wrap your fingers
and thumbs around the handles.
While working
In the event of impending danger or in
an emergency, switch off the engine
immediately – push the stop switch.
This distance must also be maintained in
relation to objects (vehicles, window
panes) – risk of property damage!
Watch the cutting blades at all times – do
not cut areas of the hedge that you
cannot see.
Be extremely careful when cutting tall
hedges; check the other side of the
hedge before starting work.
Check for correct idling, so that the
cutting blades stop moving when the
throttle trigger is released. Check and
correct the idle speed setting at regular
intervals. If the cutting blades still run,
have your dealer check your machine
and make proper adjustments or repairs.
Note that the cutting blades continue to
run for a short period after you let go of
the throttle trigger - flywheel effect!
Take special care in slippery conditions
– damp, snow, ice, on slopes or uneven
ground.
Clear away fallen branches, scrub and
cuttings.
Watch out for obstacles: tree stumps,
roots – risk of tripping or stumbling!
0000-GXX-1677-A00000-GXX-1678-A0
This power tool is not
insulated. Keep away
from power cables – dan-
ger of electrocution!
To reduce the risk
of injury from mov-
ing blades or falling
cuttings, do not
allow bystanders
within 5 meters of
your own position.
5m (17ft)

HL 94, HL 94 K
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6
Make sure you always have a firm and
secure footing.
When working at heights:
–Always use a lift bucket
–Never use the machine while
standing on a ladder or in a tree
–never work on an unstable surface
–Never use the machine with just one
hand
Be particularly alert and cautious when
wearing hearing protection because
your ability to hear warnings (shouts,
alarms, etc.) is restricted.
Take breaks when you start getting tired
or feeling fatigue – risk of accidents!
Work calmly and carefully – in daylight
conditions and only when visibility is
good. Proceed with caution, do not put
others in danger.
To reduce the risk of serious or fatal
injury from breathing toxic fumes,
ensure proper ventilation when working
in trenches, hollows or other confined
locations.
Stop work immediately if you start
suffering from nausea, headaches,
impaired vision (e.g. your field of vision
gets smaller), impaired hearing,
dizziness, or impaired concentration –
these symptoms may possibly be the
result of too-high exhaust gas
concentration – Risk of accidents!
Operate your power tool so that it
produces a minimum of noise and
emissions – do not run the engine
unnecessarily, accelerate the engine
only when working.
To reduce the risk of fire, do not smoke
while operating or standing near your
power tool. Combustible fuel vapor may
escape from the fuel system.
Dusts, mist and fumes emissions during
the work may be hazardous to your
health. Wear respiratory protection in
case of heavy dust or smoke emission.
If your power tool is subjected to
unusually high loads for which it was not
designed (e.g. heavy impact or a fall),
always check that it is in good condition
before continuing work – see also
"Before Starting". Check in particular
that the fuel system has no leaks and the
safety equipment is fully operative.
Never use a power tool that is no longer
safe to operate. In case of doubt, contact
a dealer.
Do not operate your power tool in the
starting throttle position – engine speed
cannot be controlled in this position.
Inspect the hedge and work area to
avoid damaging the cutting blades:
–Remove stones, rocks, pieces of
metal and other solid objects
–When working close to the ground,
make sure that no sand, grit or
stones get between the cutting
blades
–Take particular care when cutting
hedges next to or against wire
fences
Do not touch electric power lines – never
cut through electric power lines – risk of
electrocution!
Opening the throttle when the cutting
blades are jammed increases the load
and reduces the working speed of the
engine. The constant slipping of the
clutch causes overheating and damage
to important components (e.g. coupling,
plastic housing parts) – thus e.g. due to
the cutting blade moving during idling –
risk of injury!
If the hedge is very dusty or dirty, spray
the cutting blades with STIHL resin
solvent from time to time during cutting.
This helps reduce blade friction as well
as the aggressive effects of sap and the
build-up of dirt particles.
Before you leave the machine: Shut the
engine off.
Your power tool produces
toxic exhaust fumes as
soon as the engine starts
running. These gases
may be odorless and
invisible and may contain
unburned hydrocarbons
and benzene. Never run
the engine indoors or in
poorly ventilated loca-
tions, even if your model
is equipped with a cata-
lytic converter.
The gear head becomes
hot during operation. To
reduce the risk of burn
injury, do not touch the
gear housing!
Do not touch the cutting
blades.while the engine
is running. If the cutting
blades become jammed
by an object, switch off
the engine immediately
before attempting to
remove the object – risk
of injury!

HL 94, HL 94 K
English
7
Check the cutting blades at regular,
frequent intervals during operation or
immediately if there is a noticeable
change in cutting behavior:
–Shut off the engine
–Wait for cutting blades to come to a
standstill
–Check condition and tightness of
connections, look out for fine cracks
–Ensure that the cutting blades are
sharp
Always clean plant residue, chips,
leaves and excess lubricant off the
engine and muffler – risk of fire!
After finishing work
Always clean dust and dirt off the
machine – do not use any grease
solvents for this purpose.
Spray the cutting blades with STIHL
resin solvent. Run the motor briefly so
that the solvent is evenly distributed.
Vibrations
Prolonged use of the power tool may
result in vibration-induced circulation
problems in the hands (whitefinger
disease).
No general recommendation can be
given for the length of usage because it
depends on several factors.
The period of usage is prolonged by:
–Hand protection (wearing warm
gloves)
–Work breaks
The period of usage is shortened by:
–Any personal tendency to suffer
from poor circulation (symptoms:
frequently cold fingers, tingling
sensations).
–Low outside temperatures.
–The force with which the handles
are held (a tight grip restricts
circulation).
Continual and regular users should
monitor closely the condition of their
hands and fingers. If any of the above
symptoms appear (e.g. tingling
sensation in fingers), seek medical
advice.
Maintenance and Repairs
Service the machine regularly. Do not
attempt any maintenance or repair work
not described in the instruction manual.
Have all other work performed by a
servicing dealer.
STIHL recommends that you have
servicing and repair work carried out
exclusively by an authorized STIHL
servicing dealer. STIHL dealers are
regularly given the opportunity to attend
training courses and are supplied with
the necessary technical information.
Only use high-quality replacement parts
in order to avoid the risk of accidents
and damage to the power tool. If you
have any questions in this respect,
consult a servicing dealer.
STIHL recommends the use of original
STIHL replacement parts. They are
specifically designed to match your
model and meet your performance
requirements.
To reduce the risk of injury, always shut
off the engine before carrying out any
maintenance or repairs or cleaning the
machine. – Exception: Carburetor and
idle speed adjustments.
Do not turn the engine over on the
starter with the spark plug boot or spark
plug removed since there is otherwise a
risk of fire from uncontained sparking.
To reduce the risk of fire, do not service
or store your machine near open flames.
Check the fuel filler cap for leaks at
regular intervals.
Use only a spark plug of the type
approved by STIHL and make sure it is
in good condition – see "Specifications".
Inspect the ignition lead (insulation in
good condition, secure connection).
Check the condition of the muffler.
To reduce the risk of fire and damage to
hearing, do not operate your machine if
the muffler is damaged or missing.
Do not touch a hot muffler since burn
injury will result.
Vibration behavior is influenced by the
condition of the AV elements – check the
AV elements at regular intervals.

HL 94, HL 94 K
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8
Cutting Season
Observe country-specific or municipal
rules and regulations for cutting hedges.
Do not use your hedge trimmer during
rest periods customary in the
neighborhood.
Cutting Sequence
If a radical cut is necessary, cut a little at
a time in several stages.
Use lopping shears to cut out thick
branches first.
Cut the sides of the hedge first, then the
top.
Disposal
Do not throw cuttings into the garbage
can – they can be composted.
Preparations
NModel with adjustable cutter bar:
Set the cutter bar to the straight (0°)
position.
NRemove the blade scabbard.
NStart the engine.
NIf you use a harness: Put on the
harness and attach it to the
machine.
Working Techniques
Horizontal Cut (with cutter bar at an
angle)
Cutting close to the ground from a
standing position, e.g. low shrubs.
Swing the cutter bar from side to side as
you move along – use both sides of the
cutting blades, do not rest the cutter bar
on the ground.
WARNING
K versions (HL 92 K, HL 94 K) are not
approved for cutting close to the ground.
Vertical Cut (with cutter bar at an angle)
Cutting without standing directly next to
the hedge, e.g. flowerbed between
operator and hedge.
Swing the cutter bar up and down in an
arc as you move along the hedge – use
both sides of the cutting blades.
Using the Unit
388BA029 KN
388BA030 KN

HL 94, HL 94 K
English
9
Vertical Cut (with straight cutter bar)
Extra long reach without the need for
other aids.
Swing the cutter bar up and down in an
arc as you move along the hedge – use
both sides of the cutting blades.
Overhead Cut (with cutter bar at an
angle)
Hold the hedge trimmer vertically and
swing it in an arc to make maximum use
of its reach.
WARNING
Any working position above head height
is tiring. To minimize the risk of
accidents, work in such positions for
short periods only. Set the adjustable
cutter bar to the most suitable angle so
that the trimmer can be held in a lower,
less tiring position while still providing
adequate reach.
Horizontal Cut (with straight cutter bar)
Hold the cutter bar at an angle of 0° to
10° as you swing the hedge trimmer
horizontally.
389BA050 KN
388BA031 KN
388BA032 KN

HL 94, HL 94 K
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10
Swing the cutter bar in an arc towards
the outside of the hedge so that the
cuttings are swept to the ground.
Recommendation: Only cut hedges that
are no more than chest high.
The following STIHL attachments may
be used with the basic power tool: Mounting the Loop Handle (HL 92,
HL 94)
Loop handle is required on versions with
long drive tube (HL 92, HL 94).
NPlace the clamp (1) in the loop
handle (2) and position them both
against the drive tube (5) between
the carrying ring (3) and handle
hose (4).
NPosition the clamp (6) against the
shaft.
NLine up the holes.
NInsert the screws (7) with
washers (8).
NFit the square nuts (9) and screws.
388BA033 KN
Approved Power Tool
Attachments
Attachment
1) Loop handle required on versions
with long drive tube (HL 92, HL 94)
2) Must not be mounted to versions
with short drive tube (HL 92 K, HL
94 K)
3) Loop handle required
Application
HL 0°, 500 mm 1) Long reach hedge
trimmer
HL 0°, 600 mm 1) Long reach hedge
trimmer
HL 145°,
500 mm 1) Long reach hedge
trimmer
HL 145°,
600 mm 1) Long reach hedge trimmer
HT 2) Pole pruner
BF 2) 3) Cultivator with pick
tines
SP 10 Special harvester
Assembling the Unit
7
8
2
1
6
7
8
99
3
5
4
0000-GXX-1679-A0

HL 94, HL 94 K
English
11
NAlign the loop handle (2) and move
it to the most comfortable position
(recommended: about 20 cm).
NTighten down the screws firmly.
Mounting the Gearbox
NLoosen the clamp screws (10).
NPush the gearbox (11) onto the
drive tube (5), turn the gearbox (11)
back and forth as necessary.
Once the end of the drive tube is
inserted beyond the slot in the
clamp (12):
NPush the gearbox (11) fully home as
far as stop.
NTighten down the clamp screws
moderately.
NLine up the gearbox (11) with the
powerhead.
NTighten down the clamp screws
firmly.
2
A
0000-GXX-1680-A0
11
10
10
5
0000-GXX-1681-A0
11
12
0000-GXX-1682-A0

HL 94, HL 94 K
English
12
Your engine requires a mixture of
gasoline and engine oil.
WARNING
For health reasons, avoid direct skin
contact with gasoline and avoid inhaling
gasoline vapor.
STIHL MotoMix
STIHL recommends the use of STIHL
MotoMix. This ready-to-use fuel mix
contains no benzol or lead, has a high
octane rating and ensures that you
always use the right mix ratio.
STIHL MotoMix uses STIHL HP Ultra
two-stroke engine oil for an extra long
engine life.
MotoMix is not available in all markets.
Mixing Fuel
NOTICE
Unsuitable fuels or lubricants or mix
ratios other than those specified may
result in serious damage to the engine.
Poor quality gasoline or engine oil may
damage the engine, sealing rings, hoses
and the fuel tank.
Gasoline
Use only high-quality brand-name
gasoline with a minimum octane rating
of 90 – leaded or unleaded.
Gasoline with an ethanol content of
more than 10% can cause running
problems in engines with a manually
adjustable carburetor and should not be
used in such engines.
Engines equipped with M-Tronic deliver
full power when run on gasoline with an
ethanol content of up to 25% (E25).
Engine Oil
If you mix the fuel yourself, use only
STIHL two-stroke engine oil or another
high-performance engine oil in
accordance with JASO FB, JASO FC,
JASO FD, ISO-L-EGB, ISO-L-EGC or
ISO-L-EGD.
STIHL specifies STIHL HP Ultra two-
stroke engine oil or an equivalent high-
performance engine oil in order to
maintain emission limits over the
machine’s service life.
Mix Ratio
STIHL 50:1 two-stroke engine oil: 50
parts gasoline to 1 part oil
Examples
NUse a canister approved for storing
fuel. Pour oil into canister first, then
add gasoline and mix thoroughly.
Storing Fuel
Store fuel only in approved safety-type
fuel canisters in a dry, cool and safe
location protected from light and the sun.
Fuel mix ages – only mix sufficient fuel
for a few weeks work. Do not store fuel
mix for longer than 30 days. Exposure to
light, the sun, low or high temperatures
can quickly make the fuel mix unusable.
STIHL MotoMix may be stored for up to
2 years without any problems.
NThoroughly shake the mixture in the
canister before fueling your
machine.
WARNING
Pressure may build up in the canister –
open it carefully.
NClean the fuel tank and canister
from time to time.
Dispose of remaining fuel and cleaning
fluid properly in accordance with local
regulations and environmental
requirements.
Fuel
Gasoline STIHL engine oil 50:1
Liters Liters (ml)
10.02(20)
5 0.10 (100)
10 0.20 (200)
15 0.30 (300)
20 0.40 (400)
25 0.50 (500)

HL 94, HL 94 K
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13
Fuel filler cap
WARNING
When fueling on a slope, always position
the machine with the filler cap facing
uphill.
NPlace the machine on level ground
so that the filler cap is facing up.
NBefore fueling, clean the filler cap
and the area around it to ensure that
no dirt falls into the tank.
Open the tank cap.
NTurn the cap counterclockwise until
it can be removed from the tank
opening.
NRemove the cap.
Filling up with fuel
Take care not to spill fuel while fueling
and do not overfill the tank.
STIHL recommends you use the STIHL
filler nozzle for fuel (special accessory).
NFill up with fuel.
Close the tank cap.
NPlace the cap in the opening.
NTurn the cap clockwise as far as
stop and tighten it down as firmly as
possible by hand.
Angle Adjuster - 145°
The angle of th cutter bar can be
adjusted upwards in 4 stages from 0°
(straight) to 55°, and downwards in 7
stages from 0° to 90° (right angle facing
down). There are therefore 12 possible
working positions.
WARNING
To reduce the risk of injury, carry out the
adjustment only when the cutting blades
are at a standstill – engine at idle speed.
WARNING
The gearbox gets hot during operation.
To reduce the risk of burn injury, do not
touch the gearbox.
Fueling
0208BA019 KN
0208BA020 KN
0208BA021 KN
Adjusting the Cutter Bar
0000-GXX-1683-A0
145°

HL 94, HL 94 K
English
14
WARNING
To reduce the risk of injury, never touch
the blades while making adjustments.
NPull back the sliding sleeve (1) and
use the lever (2) to adjust the joint
by one or several holes.
NRelease the sliding sleeve (1) and
make sure the lock pin engages the
quadrant (3).
Transport Position
The cutter bar can be folded flat against
the drive tube and locked in position to
save space during transportation.
WARNING
To reduce the risk of injury, always shut
off the engine – depress stop switch –
and fit the blade scabbard before
moving the cutter bar to the transport
position or from the transport position to
the normal working position.
WARNING
The gearbox gets hot during operation.
To reduce the risk of burn injury, do not
touch the gearbox.
NShut off the engine.
NFit the blade scabbard.
NPull back the sliding sleeve (1) and
use the lever (2) to swing the joint
upwards – in direction of drive tube
– until the cutter bar is flat against
the drive tube.
NRelease the sliding sleeve (1) and
make sure the lock pin engages the
quadrant (3).
0000-GXX-1684-A0
3
2
1
0000-GXX-1685-A0
0000-GXX-1686-A0
1
2
3

HL 94, HL 94 K
English
15
Some versions of the machine can be
carried on a shoulder strap.
The type and style of the shoulder strap
depend on the market.
Shoulder Strap
NPut on the shoulder strap (1).
NAdjust the length of the strap.
NWith the power tool attached, the
carabiner (3) must be at about the
same height as your right hip.
Attaching Machine to Shoulder Strap
NAttach the carabiner (1) to the
carrying ring (2) on the drive tube –
hold the carrying ring steady.
Disconnecting Machine from Shoulder
Strap
NPress down the bar on the
carabiner (1) and pull the carrying
ring (2) out of the carabiner.
Throwing Off the Machine
WARNING
The machine must be quickly thrown off
in the event of imminent danger.
Practice removing and putting down the
machine as you would in an emergency.
To avoid damage, do not throw the
machine to the ground when practicing.
Practice quickly detaching the power
tool from the carabiner as described
under "Disconnecting Machine from
Shoulder Strap".
If you are using a shoulder strap:
Practice slipping the strap off your
shoulder.
Fitting the Harness
1
388BA037 KN
3
1
002BA308 KN
2
1
2
1
002BA310 KN
2
1
2

HL 94, HL 94 K
English
16
Controls
1Throttle trigger lockout
2Throttle trigger
3Stop switch with Run and Stop
positions. Depress the stop switch
(…) to switch off the ignition – see
"Function of Stop Switch and
Ignition System".
4Throttle set wheel – limits travel of
throttle trigger – see "Function of
Throttle Set Wheel".
Function of Stop Switch and Ignition
System
The ignition is switched off and the
engine stopped when the stop switch is
pressed. The stop switch returns
automatically to the Run position when it
is released: The ignition is switched on
again after the engine stops – the engine
is then ready to start.
Function of Throttle Set Wheel
The throttle set wheel (4) enables the
travel of the throttle trigger to be preset
anywhere between idle and full throttle.
–Turn throttle set wheel (4) in
direction of – to reduce throttle
trigger travel and maximum engine
speed.
–Turn throttle set wheel (4) in
direction of + to increase throttle
trigger travel and maximum engine
speed.
–It is possible to override the preset
stop and open the throttle wide by
pulling the throttle trigger firmly – the
preset stop remains unaffected. The
original setting is restored when the
throttle trigger is released.
Starting the Engine
NPress the manual fuel pump
bulb (5) at least five times – even if
the bulb is already filled with fuel.
Cold engine (cold start)
NTurn choke knob (6) and then push
it in at g
Also use this setting if the engine has
been running but is still cold.
–Turn throttle set wheel in direction of
+ as far as stop.
Hot engine (hot start)
NChoke knob (6) remains in F
position.
Starting / Stopping the
Engine
0208BA066 KN
2
1
43
0208BA067 KN
4
5
0000-GXX-5224-A0
2.
1.
6
0000-GXX-5475-A0

HL 94, HL 94 K
English
17
Cranking
NPlace the machine on the ground: It
must rest securely on the engine
support and the gearbox housing.
NOn units with an adjustable cutter
bar and defined transport position:
Set the cutter bar to the straight (0°)
position.
NIf fitted: Remove blade scabbard
from the cutting blades.
To reduce the risk of accidents, check
that the cutting blades are not touching
the ground of any other obstacles.
NMake sure you have a firm footing,
either standing, stooping or
kneeling.
NHold the machine firmly on the
ground with your left hand and press
down – do not touch the throttle
trigger, lockout lever or stop switch.
NOTICE
Do not stand or kneel on the shaft.
NHold the starter grip with your right
hand.
Version without ErgoStart
NPull the starter grip slowly until you
feel it engage and then give it a brisk
strong pull.
Version with ErgoStart (C-E)
NPull the starter rope slowly and
steadily.
NOTICE
Do not pull out the starter rope all the
way – it might otherwise break.
NDo not let the starter grip snap back.
Guide it slowly back into the housing
so that the starter rope can rewind
properly.
NContinue cranking until the engine
runs.
As soon as the engine runs
At temperatures below +10°C
Warm up the engine for at least
10 seconds in position g.
At temperatures above +10°C
Warm up the engine for at least
5 seconds in position g.
NDepress throttle trigger lockout and
pull the throttle trigger – the choke
knob moves to the run position F.
Warm up a cold engineat varying
speeds.
WARNING
Make sure the carburetor is correctly
adjusted. The cutting blades must not
move when the engine is idling.
Your machine is now ready for
operation.
Stopping the Engine
NDepress the momentary contact
stop switch – the engine stops –
release the stop switch – it springs
back to the run position.
Other Hints on Starting
Engine stalls in cold start position g.
NDepress throttle trigger lockout and
pull the throttle trigger – the choke
knob moves to the run position F.
NContinue cranking in position F until
the engine runs.
1191BA014 KN
1191BA015 KN
1191BA025 KN

HL 94, HL 94 K
English
18
Running engine stalls in cold start
position g or under acceleration.
NContinue cranking in position F until
the engine runs.
If the engine does not start
NCheck that all settings are correct.
NCheck that there is fuel in the tank
and refuel if necessary.
NCheck that the spark plug boot is
properly connected.
NRepeat the starting procedure.
Engine is flooded
NMove the choke knob to F and
continue cranking until the engine
runs.
Fuel tank run until completely dry
NAfter refueling, depress the manual
fuel pump bulb at least 5 times –
even if the bulb is already filled with
fuel.
NSet the choke knob according to
engine temperature.
NNow start the engine.
During break-in period
A factory-new machine should not be
run at high revs (full throttle off load) for
the first three tank fillings. This avoids
unnecessary high loads during the
break-in period. As all moving parts
have to bed in during the break-in
period, the frictional resistances in the
engine are greater during this period.
The engine develops its maximum
power after about 5 to 15 tank fillings.
During Operation
After a long period of full throttle
operation, allow the engine to run for a
short while at idle speed so that engine
heat can be dissipated by the flow of
cooling air. This protects engine-
mounted components (ignition,
carburetor) from thermal overload.
After Finishing Work
Storing for a short period: Wait for the
engine to cool down. Empty the fuel tank
and keep the machine in a dry place,
well away from sources of ignition, until
you need it again. For longer out-of-
service periods – see "Storing the
Machine".
If there is a noticeable loss of engine
power
NSet knob for warm start (1) to g
NTurn screw (2) in filter cover (3)
counterclockwise until the cover is
loose
NRemove filter cover (3)
NClean away loose dirt from around
the filter
NGrip into the recess (4) in the filter
housing and remove the felt filter (5)
NReplace felt filter (5) – as a
temporary measure you can knock it
out on the palm of you hand or blow
it out with compressed air – do not
wash
Operating Instructions Cleaning the Air Filter
0208BA034 KN
1
0208BA035 KN
5
4