Stihl STIHL HS 52 STIHL HS 52 (en)
STIHL HS 52
Instruction Manual2 - 17
English
Contents
1 Guide to Using this Manual.........................2
2 Safety Precautions and Working Techni‐
ques............................................................ 2
3 Using the Unit............................................. 7
4 Fuel............................................................. 8
5 Fueling........................................................ 9
6 Starting / Stopping the Engine.................... 9
7 Operating Instructions...............................10
8 Cleaning the Air Filter............................... 11
9 Adjusting the Carburetor........................... 11
10 Spark Plug................................................ 11
11 Engine Running Behavior......................... 12
12 Lubricating the Gearbox............................12
13 Storing the Machine.................................. 13
14 Sharpening Instructions............................ 13
15 Inspections and Maintenance by Dealer...13
16 Maintenance and Care..............................14
17 Minimize Wear and Avoid Damage...........15
18 Main Parts.................................................15
19 Specifications............................................16
20 Maintenance and Repairs......................... 16
21 Disposal.................................................... 16
Dear Customer,
Thank you for choosing a quality engineered
STIHL product.
It has been built using modern production techni‐
ques and comprehensive quality assurance.
Every effort has been made to ensure your satis‐
faction 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
1 Guide to Using this Manual
1.1 Pictograms
The meanings of the pictograms attached to the
machine are explained in this manual.
Depending on the model concerned, the follow‐
ing pictograms may be attached to your
machine.
Fuel tank; fuel mixture of gasoline
and engine oil
Operate manual fuel pump
Filler hole for gear lubricant
Blade lock
Rotating handle
1.2 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.
1.3 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 man‐
ual.
2 Safety Precautions and
Working Techniques
Special safety precautions must be
observed when working with this
power tool because it has very sharp,
high-speed cutting blades.
It is important you read and under‐
stand the User Manual before com‐
missioning and keep it in a safe place
for future reference. Non-compliance
with the User Manual may cause seri‐
ous or even fatal injury.
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.
Original Instruction Manual
0000008852_004_GB
Printed on chlorine-free paper
Printing inks contain vegetable oils, paper can be recycled.
© ANDREAS STIHL AG & Co. KG 2021
0458-497-0121-C. VA0.F21.
2 0458-497-0121-C
2 Safety Precautions and Working Techniques English
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 bystanders 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.
The user is responsible for accidents or risks
involving third parties or their property.
Do not lend or rent your power tool without the
User Manual. Be sure that anyone using it under‐
stands the information contained in this manual.
The use of machines that emit noise may be limi‐
ted to certain hours of the day as specified by
national and/or regional or local regulations.
Anyone operating the machine must be well res‐
ted, in good physical health and in good mental
condition.
If you have any condition that might be aggrava‐
ted 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 per‐
sons 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 ques‐
tions 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 original 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.
2.1 Clothing and equipment
Wear proper protective clothing and equipment.
Clothing must be sturdy but allow
complete freedom of movement.
Wear close-fitting clothes such as a
boiler suit, not a loose jacket.
Do not wear clothing which could become trap‐
ped 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 should‐
ers.
Wear sturdy shoes with non-slip soles.
WARNING
To reduce the risk of eye injuries,
wear close-fitting safety glasses in
accordance with European Standard
EN 166. Make sure the safety
glasses are a snug fit.
Wear "personal" sound protection, e.g. ear
defenders.
Wear sturdy protective gloves made
of a resistant material (e. g. leather).
STIHL can supply a comprehensive range of per‐
sonal protective equipment.
2.2 Transporting the machine
Always stop the engine.
Attach the blade scabbard even when carrying
the machine over short distances.
Carry the power tool by the handle – cutting
blades behind you. Do not touch hot parts of the
machine, especially the muffler and gear housing
– risk of burns!
By vehicle: When transporting in a vehicle, prop‐
erly secure your machine to prevent turnover,
damage and fuel spillage.
0458-497-0121-C 3
English 2 Safety Precautions and Working Techniques
Cutting blades must be properly tightened and
2.3 Refueling
Gasoline is an extremely flammable
fuel. Keep clear of naked flames. Do
not spill any fuel – do not smoke.
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.
The power tools may be fitted as standard with
different fuel caps.
After fueling, tighten down the screwtype fuel cap as securely as possible.
Place the clip lock fuel cap (bayonettype) in position, turn it as far as it will
and fold the clip lock down.
This helps reduce the risk of unit vibrations caus‐
ing 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!
2.4 Before starting
Check that your power tool is properly assem‐
bled 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
Insert the blade lock (if fitted)
–
Slide control / stop switch must move easily to
–
STOP or 0
Smooth action of throttle trigger lockout and
–
throttle trigger – the throttle trigger must return
automatically to the idle position
Check that the spark plug boot is secure – a
–
loose boot may cause sparking that could
ignite combustible fumes and cause a fire!
–
in safe operating condition (clean, sharp, not
bent or warped), correctly mounted and thor‐
oughly sprayed with STIHL resin solvent (lubri‐
cant)
Check cutter guard (if fitted) for damage
–
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
To reduce the risk of personal injury, do not
operate your power tool if it is damaged or not
properly assembled!
2.5 Starting the engine
Start the engine at least 3 meters from the fuel‐
ing 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 descri‐
bed 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.
2.6 Holding and guiding the machine
Always hold the unit firmly with both hands on
the handles.
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2 Safety Precautions and Working Techniques English
2.7.1 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 insecure support
–
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 feel‐
Left hand on the control handle, right hand on
the cutterbar handle. Wrap your fingers and
thumbs around the handles.
Make sure you always have a good footing and
hold the machine so that the cutting blades are
always facing away from your body.
2.7 While working
In the event of impending danger or in an emer‐
gency, switch off the engine immediately by mov‐
ing the slide control / stop switch to 0 or STOP.
Ensure that there are no bystanders within the
working area.
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. If the cutting blades still move, have
the machine repaired by your specialist dealer.
Check and correct the idle speed setting at regu‐
lar intervals.
Note that the cutting blades continue to run for a
short period after you let go of the throttle trigger
- flywheel effect!
The gear head becomes hot during operation. To
reduce the risk of burn injury, do not touch the
gear housing!
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!
Make sure you always have good balance and
secure footing.
ing 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.
As soon as the engine is running, the
power machine generates toxic
exhaust gas.As soon as the engine is
running, the power machine gener‐
ates toxic exhaust gas. 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 catalytic converter.
To reduce the risk of serious or fatal injury from
breathing toxic fumes, ensure proper ventilation
when working in trenches, hollows or other con‐
fined 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. Com‐
bustible fuel vapor may escape from the fuel sys‐
tem.
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.
0458-497-0121-C 5
English 2 Safety Precautions and Working Techniques
Do not operate your power tool in the starting
throttle position – engine speed cannot be con‐
trolled in this position.
Inspect the hedge and work area to avoid dam‐
aging the cutting blades:
Remove stones, rocks, pieces of metal and
–
other solid objects
Ensure that no sand or small stones get
–
between the cutting blades, e.g. when working
close to the ground.
When cutting hedges next to or against wire
–
fences, do not touch wire with the cutting
blades
Do not touch electric power lines – never cut
through electric power lines – risk of electrocu‐
tion!
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!
Opening the throttle when the cutting blades are
jammed increases the load and reduces the
working speed of the engine. The clutch then
slips continuously and this causes overheating
and damage to important components (e.g.
clutch, plastic housing components) – as a result,
there is a risk of injury! from the idling cutting
blades
If the hedge is very dusty or dirty, spray the cut‐
ting blades with STIHL resin solvent from time to
time during cutting. This will significantly reduce
blade friction, the aggressive effects of sap and
the build-up of dirt particles.
The dust which is generated during operation
may be harmful to health. Wear a respirator in
very dusty conditions.
Before you leave the machine: Shut the engine
off.
Check the cutting blades at regular short inter‐
vals 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 the condition and firm seat, watch 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!
2.8 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 sol‐
vent. Run the motor briefly so that the solvent is
evenly distributed.
2.9 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 cir‐
–
culation (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.
2.10 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 per‐
formed by a servicing dealer.
STIHL recommends that you have servicing and
repair work carried out exclusively by an author‐
ized 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
machine. If you have any questions in this
respect, consult a servicing dealer.
STIHL recommends the use of genuine 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
6 0458-497-0121-C
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