Stihl FS 70 Owner Manual

STIHL FS 70
Instruction Manual
English
© ANDREAS STIHL AG & Co. KG, 2020
0458-570-0121-D. VA4.M19.
0000001648_021_GB
Printed on chlorine-free paper
Printing inks contain vegetable oils, paper can be recycled.
Original Instruction Manual
Contents
Guide to Using this Manual
Safety Precautions and Working
Techniques
Approved Combinations of Cutting
Attachment, Deflector, Handle and
Harness
Mounting the Bike Handle
Mounting the Loop Handle
Fitting the Carrying Ring
Mounting the Deflector
Mounting the Cutting Attachment
Fuel
Fueling
Fitting the Harness
Balancing the Machine
Starting / Stopping the Engine
Transporting the Unit
Operating Instructions
Cleaning the Air Filter
Adjusting the Carburetor
Spark Plug
Engine Running Behavior
Storing the Machine
Sharpening Metal Cutting Blades
Maintaining the Mowing Head
Maintenance and Care
Minimize Wear and Avoid Damage
Main Parts
Specifications
Maintenance and Repairs
Disposal
EC Declaration of Conformity
2
Dear Customer,
2
Thank you for choosing a quality
engineered STIHL product.
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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
This instruction manual is protected by copyright. All rights reserved, especially the rights to reproduce, translate and process
with electronic systems.
FS 70 C, FS 70 RC
1
English
Guide to Using this Manual
Symbols in text
WARNING
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.
Fuel tank; fuel mixture of
gasoline and engine oil
Operate decompression
valve
Manual fuel pump
Operate manual fuel
pump
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.
Safety Precautions and
Working Techniques
Some special safety precautions have to be
observed when working
with this power tool
because of the very high
speed of the cutting
attachment.
It is important that you
read the instruction manual before first use and
keep it in a safe place for
future reference. Nonobservance of the
instruction manual may
result in serious or even
fatal injury.
Observe all applicable local safety
regulations, standards and ordinances.
If you have not used this type of power
tool before: Have your dealer or other
experienced user show you how it is
operated or attend a special course in its
operation.
Minors should never be allowed to use a
power tool.
Tube of grease
Intake air: Summer
operation
2
Keep bystanders, especially children,
and animals away from the work area.
When the power tool is not in use, shut it
off so that it does not endanger others.
Secure it against unauthorized use.
Intake air: Winter
operation
The user is responsible for avoiding
injury to third parties or damage to their
property.
Handle heating
Do not lend or rent your power tool
without the instruction manual. Be sure
that anyone using it understands the
information contained in this manual.
FS 70 C, FS 70 RC
English
The use of noise emitting power tools
may be restricted to certain times by
national or local regulations.
To operate the power tool you must be
rested, in good physical condition and
mental health.
If you have any condition that might be
aggravated by strenuous work, check
with your doctor before operating a
power tool.
Persons with pacemakers only: The
ignition system of your power tool
produces an electromagnetic field of a
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.
Do not operate the power tool if you are
under the influence of any substance
(drugs, alcohol) which might impair
vision, dexterity or judgment.
Depending on the cutting attachment
fitted, use your power tool only for
cutting grass, wild growth, shrubs,
scrub, bushes, small diameter trees and
similar materials.
Do not use your power tool for any other
purpose because of the increased risk of
accidents.
Only use cutting attachments and
accessories that are explicitly approved
for this power tool model by STIHL or
are technically identical. If you have any
questions in this respect, consult a
servicing dealer. Use only high quality
tools and accessories in order to avoid
the risk of accidents and damage to the
machine.
FS 70 C, FS 70 RC
STIHL recommends the use of genuine
STIHL tools and accessories. They are
specifically designed to match the
product and meet your performance
requirements.
Wear steel-toed safety
boots with non-slip soles.
Never attempt to modify your machine 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.
Sturdy shoes with non-slip soles may be
worn as an alternative only when using
mowing heads.
The deflector on this power tool cannot
protect the operator from all objects
thrown by the cutting attachment
(stones, glass, wire, etc.). Such objects
may ricochet and then hit the operator.
Do not use a pressure washer to clean
your power tool. The solid jet of water
may damage parts of the power tool.
Clothing and Equipment
Wear proper protective clothing and
equipment.
Clothing must be sturdy
but allow complete freedom of movement. Wear
snug-fitting clothing, an
overall and jacket combination, do not wear a
work coat.
Avoid clothing that could get caught on
branches or brush or moving parts of the
machine. Do not wear a scarf, necktie or
jewelry. Tie up and confine long hair
(e.g. with a hair net, cap, hard hat, etc.).
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 comfortable and snug fit.
Wear a face shield and make sure it is a
good fit. A face shield alone does not
provide adequate eye protection.
Wear hearing protection, e.g. earplugs
or ear muffs.
Wear a safety hard hat for thinning
operations, when working in high scrub
and where there is a danger of head
injuries from falling objects.
Wear robust work gloves
made of durable material
(e.g. leather).
STIHL offers a comprehensive range of
personal protective clothing and
equipment.
3
English
Transporting the Power Tool
Fueling
Before Starting
002BA601 KN
Gasoline is an extremely
flammable fuel. Keep
clear of naked flames. Do
not spill any fuel – do not
smoke.
Check that your power tool is properly
assembled and in good condition – refer
to appropriate chapters in the instruction
manual.
–
Check the fuel system for leaks,
paying special attention to visible
parts such as the tank cap, hose
connections and the manual fuel
pump (on machines so equipped). If
there are any leaks or damage, do
not start the engine – risk of fire.
Have your machine repaired by a
servicing dealer before using it
again.
–
Use only an approved combination
of cutting attachment, deflector,
handle and harness. All parts must
be assembled properly and
securely.
–
The stop switch / slide control must
move freely.
–
Check smooth action of choke
knob, throttle trigger lockout and
throttle trigger – the throttle trigger
must return automatically to the idle
position. The choke lever must
spring back from the g and <
positions to the run position F when
the throttle trigger lockout and
throttle trigger are squeezed.
–
Check that the spark plug boot is
secure – a loose boot may cause
arcing that could ignite combustible
fumes and cause a fire.
–
Check cutting tool or attachment for
correct and secure assembly and
good condition.
Always shut off the engine before
refueling.
Do not fuel a hot engine – fuel may spill
and cause a fire.
002BA272 KN
Open the fuel cap carefully to allow any
pressure build-up in the tank to release
slowly and avoid fuel spillage.
Always stop the engine.
Carry the unit hanging from the shoulder
strap or properly balanced by the drive
tube.
To reduce the risk of cut injuries, fit
transport guard on the cutting
attachment, even when carrying the tool
for short distances – see also "Mounting
the Transport Guard".
To reduce the risk of serious burn injuries, avoid
touching hot parts of the
machine, including the
gearbox housing.
Transporting by vehicle: Properly secure
your power tool to prevent turnover, fuel
spillage and damage.
4
Fuel your power tool only in wellventilated areas. If you spill fuel, wipe
the machine immediately – if fuel gets on
your clothing, change immediately.
After fueling, tighten
down the fuel tank cap as
securely as possible.
This reduces the risk of unit vibrations
causing the fuel cap to loosen or come
off and spill quantities of fuel.
To reduce the risk of serious or fatal
burn injuries, check for fuel leakage. If
fuel leakage is found, do not start or run
the engine until leak is fixed.
FS 70 C, FS 70 RC
English
–
Never attempt to modify the controls
or safety devices in any way.
–
Keep the handles dry and clean –
free from oil and dirt – for safe
control of the power tool.
–
Adjust the harness and handle(s) to
suit your height and reach. See
chapters on "Fitting the Harness"
and "Balancing the Machine".
To reduce the risk of accidents, do not
operate your power tool if it is damaged
or not properly assembled.
If you use a shoulder strap or full
harness: 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.
Starting the Engine
Start the engine at least 3 meters from
the fueling spot, outdoors only.
Place the unit on firm ground in an open
area. Make sure you have good balance
and secure footing. Hold the unit
securely. The cutting attachment must
be clear of the ground and all other
obstructions because it may begin to run
when the engine starts.
FS 70 C, FS 70 RC
Your power tool is a one-person unit. To
reduce the risk of injury from thrown
objects, do not allow other persons
within a radius of 15 meters of your own
position – even when starting.
Models with bike handle
To reduce the risk of
injury, avoid contact with
the cutting attachment.
Do not drop start the
power tool – start the
engine as described in
the instruction manual.
Note that the cutting
attachment continues to
run for a short period
after you let go of the
throttle trigger – flywheel
effect.
Check idle speed setting: The cutting
attachment must not rotate when the
engine is idling with the throttle trigger
released.
To reduce the risk of fire, keep hot
exhaust gases and hot muffler away
from easily combustible materials (e.g.
wood chips, bark, dry grass, fuel).
002BA257 KN
Check protective devices (e.g.
deflector for cutting attachment,
rider plate) for damage or wear.
Always replace damaged parts. Do
not operate your machine with a
damaged deflector or worn rider
plate (lettering and arrows no longer
legible).
Right handle on control handle, left hand
on left handle.
Models with loop handle
002BA080 KN
–
Left hand on loop handle, right hand on
control handle, even if you are lefthanded.
During Operation
Holding and Controlling the Power Tool
Make sure you always have good
balance and secure footing.
Always hold the power tool firmly with
both hands on the handles.
In the event of impending danger or in
an emergency, switch off the engine
immediately – move the stop switch /
slide control in the direction of 0.
Make sure you always have good
balance and secure footing.
5
English
15m (50ft)
The cutting attachment may catch and
fling objects a great distance and cause
injury - therefore, do not allow any other
persons within a radius of 15 meters of
your own position. To reduce the risk of
damage to property, also maintain this
distance from other objects (vehicles,
windows). Even maintaining a distance
of 15 meters or more cannot exclude the
potential danger.
The correct engine idle speed is
important to ensure that the cutting
attachment stops rotating when you let
go of the throttle trigger.
Check and correct the idle speed setting
regularly. If the cutting attachment
continues to rotate when the engine is
idling, have the machine checked by
your servicing dealer. STIHL
recommends an authorized STIHL
servicing dealer.
Take special care in slippery conditions
(ice, wet ground, snow) – on slopes or
uneven ground.
Watch out for obstacles: Roots and tree
stumps which could cause you to trip or
stumble.
Always stand on the ground while
working, never on a ladder, work
platform or any other insecure support.
Be particularly alert and cautious when
wearing hearing protection because
your ability to hear warnings (shouts,
alarms, etc.) is restricted.
6
To reduce the risk of accidents, take a
break in good time to avoid tiredness or
exhaustion.
Work calmly and carefully – in daylight
conditions and only when visibility is
good. Stay alert so as not to endanger
others.
Your power tool produces
toxic exhaust fumes as
soon as the engine is
running. These fumes
may be colorless and
odorless and contain
unburned hydrocarbons
and benzol. Never run
the engine indoors or in
poorly ventilated locations, 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 confined
locations.
To reduce the risk of accidents, stop
work immediately in the event of
nausea, headache, visual disturbances
(e.g. reduced field of vision), problems
with hearing, dizziness, deterioration in
ability to concentrate. Apart from other
possibilities, these symptoms may be
caused by an excessively high
concentration of exhaust gases in the
work area.
To reduce the risk of fire, do not smoke
while operating or standing near your
power tool. Note that combustible fuel
vapor may escape from the fuel system.
The dusts, vapor and smoke produced
during operation may be dangerous to
health. If the work area is very dusty or
smoky, wear a respirator.
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 the fuel system in particular for
leaks and make sure the safety devices
are working properly. Do not continue
operating your power tool if it is
damaged. In case of doubt, consult your
servicing dealer.
Do not operate your power tool with the
choke lever in the warm start position <
– the engine speed cannot be controlled
in this position.
To reduce the risk
of injury from
thrown objects,
never operate the
unit without the
proper deflector for
the type of cutting
attachment being
used.
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.
FS 70 C, FS 70 RC
English
Inspect the work area:
Stones, pieces of metal
or other solid objects may
be thrown more than 15
meters and cause personal injury or damage
the cutting attachment
and property (e.g. parked
vehicles, windows).
The gearbox becomes
hot during operation. To
reduce the risk of burn
injury, do not touch the
gearbox housing.
Sharpen metal cutting attachments
regularly as specified.
When using mowing heads
Unevenly sharpened metal cutting
attachments cause out-of-balance
which can impose extremely high loads
on the machine and increase the risk of
breakage.
Special care must be taken when
working in difficult, over-grown terrain.
Equip the deflector with the additional
components specified in the instruction
manual.
Dull or improperly sharpened cutting
edges can put a higher load on the
cutting attachment and increase the risk
of injury from cracked or broken parts.
When cutting high scrub, under bushes
and hedges: Keep cutting attachment at
a minimum height of 15 cm to avoid
harming small animals.
Use only the deflector with properly
mounted line limiting blade to ensure the
mowing lines are automatically trimmed
to the approved length.
Always shut off the engine before
leaving the unit unattended.
To reduce the risk of injury, always turn
off the engine before adjusting the nylon
line of manually adjustable mowing
heads
Check the cutting attachment at regular
short intervals during operation or
immediately if there is a noticeable
change in cutting behavior:
–
Turn off the engine. Hold the unit
firmly and wait for the cutting
attachment to come to a standstill.
–
Check condition and tightness, look
for cracks.
–
Check sharpness.
–
Replace damaged or dull cutting
attachments immediately, even if
they have only superficial cracks.
Using the unit with over-long nylon
cutting lines reduces the motor's
operating speed. The clutch then slips
continuously and this causes
overheating and damage to important
components (e.g. clutch, polymer
housing components) – and this can
increase the risk of injury from the
cutting attachment rotating while the
engine is idling.
Using metal cutting attachments
Clean grass and plant residue off the
cutting attachment mounting at regular
intervals – remove any build up of
material from the cutting attachment and
deflector.
STIHL recommends the use of original
STIHL metal cutting attachments. They
are specifically designed to match your
model and meet your performance
requirements.
To reduce the risk of injury, shut off the
engine before changing the cutting
attachment.
Metal cutting attachments rotate at very
high speed. The forces that occur act on
the machine, the attachment and the
material being cut.
FS 70 C, FS 70 RC
Inspect metal cutting attachments for
cracks or warping after every contact
with hard objects (e.g. stones, rocks,
pieces of metal). To reduce the risk of
injury, remove burrs and other visible
build-ups of material (use a file) because
they may become detached and be
thrown at high speed during operation.
If a rotating metal cutting attachment
makes contact with a rock or other solid
object there is a risk of sparking which
may cause easily combustible material
to catch fire under certain
circumstances. Dry plants and scrub are
also easily combustible, especially in hot
and dry weather conditions. If there is a
risk of fire, do not use metal cutting
attachments near combustible
materials, dry plants or scrub. Always
contact your local forest authority for
information on a possible fire risk.
Do not continue using or attempt to
repair damaged or cracked cutting
attachments by welding, straightening or
modifying the shape (out of balance).
This may cause parts of the cutting
attachment to come off and hit the
operator or bystanders at high speed
and result in serious or fatal injuries.
7
English
To reduce the above-mentioned risks
when using a metal cutting attachment,
never use a metal cutting attachment
with a diameter larger than specified. It
must not be too heavy. It must be
manufactured from materials of
adequate quality and its geometry must
be correct (shape, thickness).
To reduce the risk of injury, a metal
cutting attachment not manufactured by
STIHL must not be heavier, thicker,
have a different shape or a diameter
larger than the largest metal cutting
attachment approved by STIHL for this
power tool model.
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).
8
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.
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.
Maintenance and Repairs
Check the fuel filler cap for leaks at
regular intervals.
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.
Use only a spark plug of the type
approved by STIHL and make sure it is
in good condition – see "Specifications".
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.
Check the condition of the muffler.
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. These parts
are specifically designed to match your
machine model and meet your
performance requirements.
To reduce the risk of injury from
unintentional engine startup, always
shut off the engine and disconnect the
spark plug boot before performing any
repairs, maintenance or cleaning work. –
Exception: Carburetor and idle speed
adjustments.
To reduce the risk of fire, do not service
or store your machine near open flames.
Inspect the ignition lead (insulation in
good condition, secure connection).
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.
Symbols on Deflectors
An arrow on the deflector shows the
correct direction of rotation of the cutting
attachments.
Some of the following symbols are
applied to the outside of the deflector to
indicate the approved combination of
cutting tool and deflector.
Use deflector in
combination with
mowing heads
only. Do not use
metal cutting
attachments.
FS 70 C, FS 70 RC
English
Do not use deflector with
brush knives or circular
saw blades.
Check the wear limit marks!
Mowing Head with Nylon Line
002BA049 KN
Do not use deflector with
mowing heads.
If one of the wear limit marks on the
PolyCut mowing head is worn through
(arrow): Do not continue using the
mowing head. Install a new one. There
is otherwise a risk of injury from thrown
parts of the head.
Use deflector in combination with grass cutting
blades only.
000BA015 KN
Shoulder strap
Nylon line achieves a soft cut for edging
and trimming around trees, fence posts,
etc. – less risk of damaging tree bark.
The mowing head comes with an
instruction leaflet. Refill the mowing
head with nylon line as described in the
instruction leaflet.
N
Use a shoulder strap.
N
With the engine running, attach the
machine to the shoulder strap.
Grass cutting blades must always be
used in combination with a shoulder
strap.
It is important to follow the maintenance
instructions for the PolyCut mowing
head.
The PolyCut can also be equipped with
mowing line in place of the polymer
blades.
The mowing head comes with
instruction leaflets. Equip the mowing
head with polymers blades or nylon line
as described in the instruction leaflets.
WARNING
WARNING
To reduce the risk of serious injury,
never use wire or metal-reinforced line in
place of the nylon line.
Never use wire in place of the nylon
mowing line – risk of injury.
STIHL Polycut Mowing Head with
Polymer Blades
For mowing unobstructed edges of
meadows (without posts, fences, trees
or similar obstacles).
FS 70 C, FS 70 RC
9
English
Risk of Kickout (Blade Thrust) with Metal
Cutting Attachments
Grass Cutting Blade
WARNING
002BA135 KN
000BA020 KN
When using metal cutting attachments there is
a risk of kickout when the
rotating blade comes into
contact with a solid object
such as a tree trunk,
branch, tree stump, rock
or similar. The machine is
thrown to the right or to
the rear – opposite to the
attachment's direction of
rotation.
The risk of kickout is greatest when the
black area of the rotating cutting
attachment comes into contact with a
solid object.
10
Use for grass and weeds only – sweep
the brushcutter in an arc like a scythe.
WARNING
Improper use may damage the grass
cutting blade – risk of injury from thrown
parts.
Resharpen the grass cutting blade
according to instructions when it has
dulled noticeably.
FS 70 C, FS 70 RC
English
Approved Combinations of Cutting Attachment, Deflector, Handle and Harness
Cutting Attachment
Deflector
2
1
3
Handle
Shoulder Strap/Harness
14
13
15
17
19
18
19
18
19
4
11
6
5
16
7
8
12
10
FS 70 C, FS 70 RC
16
0000-GXX-0379-A1
9
15
14
11
English
Approved Combinations
Deflectors
Select correct combination from the
table according to the cutting
attachment you intend to use.
11 Deflector with blade, for mowing
heads
12 Deflector for metal cutting
attachments
For safety reasons only the cutting
attachments, deflectors, handles and
harnesses shown in each row of the
table may be used together. No other
combinations are permitted – risk of
accidents.
Cutting Attachments
Mowing heads
1
2
3
4
5
6
7
STIHL SuperCut 20-2
STIHL AutoCut C 25-2
STIHL AutoCut 25-2
STIHL AutoCut C 26-2
STIHL TrimCut 31-2
STIHL DuroCut 20-2
STIHL PolyCut 20-3
Metal cutting attachments
8
Grass cutting blade 230-2
(230 mm dia.)
9
Grass cutting blade 230-4
(230 mm dia.)
10 Grass cutting blade 230-8
(230 mm dia.)
WARNING
Handles
13
14
15
16
Mounting the Handlebar
Mount the handlebar on the drive tube
about 10 cm (4 in) forward of the engine
housing.
Loop handle
Loop handle with
Barrier bar
Bicycle handle
Harness
3
17 Shoulder strap may be used
18 Shoulder strap must be used
19 Full harness may be used
5
4
1
6
2
002BA274 KN
WARNING
Mounting the Bike Handle
N
Place the handle support (1) on the
drive tube (2).
N
Place the handlebar (3) in the
handle support.
N
Fit the clamp (4) on the handle
support. Insert the screws (5)
through the holes in the parts and
screw them into clamp (6) as far as
stop – tighten them only moderately
at this stage.
Non-metal grass cutting blades are not
approved.
12
FS 70 C, FS 70 RC
English
Mounting the Control Handle
Adjusting and securing the handlebar
2
1
3
2
1
6
6
547BA027 KN
5
N
Take out the screw (1) – the nut (2)
remains in the control handle (3).
N
Push the control handle onto the
handlebar (5) until the holes (6) line
up – the throttle trigger (4) must
point towards the gearbox.
N
Insert the screw (1) and tighten it
down firmly.
FS 70 C, FS 70 RC
N
Align the handlebar so that
distance (A) is about 20 cm (8 in)
and distance (B) about 15 cm (6 in).
N
Tighten down the screws (1) firmly
in a crosswise pattern.
Fitting the Throttle Cable
2
1
N
002BA276 KN
B
1
002BA275 KN
A
4
Push the throttle cable (1) into the
retainer (2).
NOTICE
Do not kink the throttle cable or lay it in
tight radii – make sure the throttle trigger
moves freely.
13
English
Mounting the Barrier Bar
Mounting the Loop Handle
4
1
2
002BA586 KN
4
A factory-new machine comes with the
loop handle already mounted.
7
8
5
9
Using the Barrier Bar
N
Take out the screws (1) and remove
along with washers (2) and nuts (3).
Place the clamp (7) in the loop
handle (4) and position them both
against the drive tube (8).
N
Remove the loop handle (4) and
clamps (5).
Position the clamp (8) against the
drive tube.
N
Place the barrier bar (6) in position
as shown.
N
Line up the holes.
N
Insert the screws (1) in the holes
and screw them into the barrier bar
as far as stop.
N
Go to "Adjusting and Securing the
Loop Handle".
A barrier bar may have to be mounted to
suit the cutting attachment you intend to
use – see "Approved Combinations of
Cutting Attachment, Deflector, Handle
and Harness".
3
The barrier bar comes standard with the
machine or is available as a special
accessory.
3
N
14
1
N
002BA609 KN
002BA587 KN
N
3
002BA588 KN
5
3
1
002BA610 KN
1
2
6
Fit the square nuts (3) in the barrier
bar (6); the holes must line up.
Leave the barrier bar permanently
mounted to the loop handle.
FS 70 C, FS 70 RC
English
Adjusting and Securing the Loop Handle
Fitting the Carrying Ring
Polymer Version
A
1
1
4
1
Recommendation: distance (A):
about 15 cm (5.9 in)
N
Slide the handle to the required
position.
N
Line up the loop handle (4).
N
Tighten down the screws until the
loop handle can no longer be
rotated on the drive tube. If no
barrier bar is fitted – lock the nuts if
necessary.
For position of carrying ring see "Main
Parts".
N
Place the clamp (1) against the
drive tube with the tapped hole on
the left (viewed from engine).
For position of carrying ring see "Main
Parts".
N
Squeeze the two ends of the clamp
together and hold in that position.
Push the carrying ring (1) over the
drive tube.
N
Insert the M6x14 screw (2).
N
Line up the carrying ring.
N
Insert the M5 nut in the hex recess
in the carrying ring.
N
Tighten down the screw firmly.
N
Fit the M5x14 screw.
N
Line up the carrying ring.
N
Tighten down the screw firmly.
002BA529 KN
The loop handle can be adjusted to suit
the height and reach of the operator and
the application by changing
distance (A).
002BA142 KN
002BA611 KN
2
N
Metal Version
The carrying ring comes standard with
the machine or is available as a special
accessory.
FS 70 C, FS 70 RC
15
English
Mounting the Deflector
Mounting the Cutting
Attachment
Use the right deflector
002BA262 KN
1
WARNING
Deflector (1) is approved for mowing
heads only and must therefore be
mounted before fitting a mowing head
N
Position the deflector against the
gearbox so that the lug (3) engages
the recess (4) in the deflector.
N
Insert the screw (5) and tighten it
down firmly.
002BA104 KN
0414BA007 KN
Placing power tool on the ground
N
Shut off the engine.
N
Lay your power tool on its back so
that the cutting attachment
mounting face is pointing up.
Fitting the Thrust Plate
2
002BA263 KN
The machine comes standard with the
thrust plate.
1
Mounting the Deflector
Deflectors (1) and (2) are both mounted
to the gearbox in the same way.
16
002BA265 KN
WARNING
Deflector (2) is approved for grass
cutting blades only and must therefore
be mounted before fitting a grass cutting
blade.
N
Slip the thrust plate (1) over the
shaft (2).
NOTICE
The thrust plate on the gearbox is
necessary for mounting cutting tools.
FS 70 C, FS 70 RC
English
Mounting Hardware for Cutting
Attachments
4
If mounting hardware is not packed with
machine
If mounting hardware is packed with
machine
Mowing heads and metal cutting tools
may be mounted.
Rotate shaft or cutting attachment
until the stop pin slips into position
and blocks the shaft.
WARNING
002BA267 KN
002BA266 KN
N
Mounting the Cutting Attachment
5
Only mowing heads may be used which
mount directly to the shaft (2).
Insert the stop pin (7) or offset
screwdriver (7) in the hole (8) in the
gearbox as far as stop – and apply
slight pressure.
3
The mounting hardware supplied
depends on the cutting attachment that
comes as original equipment with the
new machine.
2
N
The nut (3), rider plate (4) and thrust
washer (5) are required to secure some
mowing heads.
These parts are included in a kit
supplied with the machine and are also
available as special accessories.
Use a deflector that matches the cutting
attachment – see "Mounting the
Deflector".
Fitting Mowing Head with Screw
Mounting
Keep the instruction leaflet for the
mowing head in a safe place.
Block the shaft.
8
7
7
002BA166 KN
2
The output shaft (2) must be blocked
with the stop pin (7) or screwdriver (7) to
mount or remove cutting tools. These
parts come standard with the machine or
are available as special accessories.
FS 70 C, FS 70 RC
17
English
WARNING
Wear protective gloves to reduce the
risk of direct contact with the sharp
cutting edges.
Mount only metal cutting attachments.
9
Check direction of rotation of cutting
attachment
1
7
6
4
8
Screw the mowing head
counterclockwise on to the shaft (1)
as far as stop.
N
Block the shaft.
N
Tighten down the mowing head
firmly.
NOTICE
Remove the tool used to block the shaft.
Removing the Mowing Head
N
Block the shaft.
N
Unscrew the mowing head
clockwise.
Mounting Metal Cutting Attachment
Keep the leaflet and packaging of the
metal cutting tool in a safe place.
18
1
N
Place the cutting attachment (4) on
the thrust plate (5).
WARNING
2
3
681BA050 KN
N
681BA051 KN
002BA385 KN
5
The cutting edges of the grass cutting
blades (1) and (2) may point in either
direction – these cutting attachments
must be turned over regularly to reduce
one-sided wear.
Cutting edges of grass cutting blade (3)
must point clockwise.
WARNING
Direction of rotation is indicated by an
arrow on the inside of the deflector.
Collar (see arrow) must engage the
cutting attachment's mounting hole.
Securing the cutting attachment
N
Fit the thrust washer (6) – convex
side must face up.
N
Fit the rider plate (7).
N
Block the shaft (8).
N
Screw the mounting nut (9) on to the
shaft counterclockwise and tighten
it down firmly.
WARNING
If the mounting nut has become too
loose, fit a new one.
FS 70 C, FS 70 RC
English
NOTICE
Remove the tool used to block the shaft.
Removing the Metal Cutting Attachment
Fuel
Your engine requires a mixture of
gasoline and engine oil.
WARNING
WARNING
Wear protective gloves to reduce the
risk of direct contact with the sharp
cutting edges.
N
Block the shaft.
N
Unscrew the mounting nut
clockwise.
N
Remove cutting attachment and its
mounting hardware from the
gearbox – but do not remove the
thrust plate (5).
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
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 twostroke engine oil or an equivalent highperformance 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
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.
FS 70 C, FS 70 RC
Gasoline
Liters
1
5
10
15
20
25
N
STIHL engine oil 50:1
Liters
(ml)
0.02
(20)
0.10
(100)
0.20
(200)
0.30
(300)
0.40
(400)
0.50
(500)
Use a canister approved for storing
fuel. Pour oil into canister first, then
add gasoline and mix thoroughly.
19
English
Store fuel only in approved safety-type
fuel canisters in a dry, cool and safe
location protected from light and the sun.
Filling Up with Fuel
Fueling
Take care not to spill fuel while fueling
and do not overfill the tank.
Preparations
STIHL recommends you use the STIHL
filler nozzle for fuel (special accessory).
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.
N
Closing the Tank Cap
Thoroughly shake the mixture in the
canister before fueling your
machine.
547BA045 KN
STIHL MotoMix may be stored for up to
2 years without any problems.
N
N
Before fueling, clean the filler cap
and the area around it to ensure that
no dirt falls into the tank.
N
Position the machine so that the
filler cap is facing up.
WARNING
Pressure may build up in the canister –
open it carefully.
N
Clean the fuel tank and canister
from time to time.
Fill up with fuel.
Opening the Tank Cap
N
Place the cap in the opening.
N
Turn the cap clockwise as far as
stop and tighten it down as firmly as
possible by hand.
002BA447 KN
Dispose of remaining fuel and cleaning
fluid properly in accordance with local
regulations and environmental
requirements.
002BA448 KN
Storing Fuel
20
N
Turn the cap counterclockwise until
it can be removed from the tank
opening.
N
Remove the tank cap.
FS 70 C, FS 70 RC
English
Full Harness
Balancing the Machine
The type and style of the harness
depend on the market.
The type and style of the harness and
carabiner (spring hook) depend on the
market.
1
The use of the harness is described in
the chapter on "Approved Combinations
of Cutting Attachment, Deflector, Handle
and Harness".
The carrying ring is integrated in the
control handle on loop-handled units–
see "Main Parts". Loop-handled units do
not need to be balanced.
3
Shoulder strap
Attaching the unit to the harness
2
002BA228 KN
1
N
Put on the shoulder strap (1).
N
Adjust the length of the strap so that
the carabiner (2) is about a hand’s
width below your right hip.
N
Balance the machine.
FS 70 C, FS 70 RC
N
Put on the harness (1) and close the
locking plate (3).
N
Adjust the length of the strap – with
the machine attached, the
carabiner (2) must be about a
hand's width below your right hip.
N
Balance the machine – see
"Balancing the Machine".
2
N
2
1
002BA311 KN
Fitting the Harness
Attach the carabiner (1) to the
carrying ring (2) on the drive tube.
21
English
When the correct floating position has
been reached:
N
Starting / Stopping the
Engine
Tighten down the screw on the
carrying ring firmly.
Controls
Detaching the unit from the harness
Version with Bike Handle
1
N
N
Loosen the screw (3).
2
002BA312 KN
2
1
3
Press down the bar on the
carabiner (1) and pull the carrying
ring (2) out of the carabiner.
2
1
002BA313 KN
002BA268 KN
Floating position
N
Mowing heads and grass cutting
blades should just touch the ground.
1
2
3
Throttle trigger lockout
Throttle trigger
Stop switch with Run and 0 = Stop
positions. Press the stop switch to
switch off the ignition – see
"Function of stop switch and ignition
system".
Proceed as follows to adjust the floating
position:
N
22
Move the carrying ring up or down
the drive tube – tighten the screw
moderately – let the unit go and wait
until is its balanced – then check the
floating position.
FS 70 C, FS 70 RC
English
Version with Loop Handle
Starting the Engine
Also use this setting if the engine has
been running but is still cold.
Cranking
2
1
2
3
0414BA011 KN
N
Throttle trigger lockout
Throttle trigger
Stop switch with Run and 0 = Stop
positions. Press the stop switch to
switch off the ignition – see
"Function of stop switch and ignition
system".
Function of stop switch and ignition
system
N
Place the unit on the ground: It must
rest securely on the engine support
and the deflector.
N
If fitted: Remove the transport guard
from the cutting attachment.
Cold engine (cold start)
5
N
Press in the choke lever (5) and turn
it to g at the same time.
Warm engine (warm start)
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.
To reduce the risk of accidents, check
that the cutting attachment is not
touching the ground of any other
obstacles.
N
Make sure you have a firm footing,
either standing, stooping or
kneeling.
N
Hold the unit firmly on the ground
with your left hand and press down
– do not touch the throttle trigger,
lockout lever or stop switch.
NOTICE
5
Do not stand or kneel on the drive tube.
547BA017 KN
N
FS 70 C, FS 70 RC
Press the manual fuel pump
bulb (P) at least five times – even if
the bulb is filled with fuel.
0414BA012 KN
1
547BA016 KN
3
457BA046 KN
4
Press in the choke lever (5) and turn
it to < at the same time.
23
English
As soon as the engine runs
Engine does not start in warm start
position <
0414BA014 KN
N
0414BA013 KN
N
N
Hold the starter grip with your right
hand.
N
Pull the starter grip steadily.
NOTICE
Do not pull out the starter rope all the
way – it might otherwise break.
N
Do not let the starter grip snap back.
Guide it slowly back into the housing
so that the starter rope can rewind
properly.
N
Continue cranking until the engine
runs.
Press down the throttle trigger
lockout and open the throttle – the
choke knob moves to the run
position F. After a cold start, warm
up the engine by opening the
throttle several times.
If the engine does not start
N
Check that all settings are correct.
N
Check that there is fuel in the tank
and refuel if necessary.
N
Check that the spark plug boot is
properly connected.
N
Repeat the starting procedure.
Engine is flooded
N
WARNING
Make sure the carburetor is correctly
adjusted. The cutting attachment must
not rotate when the engine is idling.
N
Move the stop switch in the direction
of 0 – the engine stops – release
the stop switch – it springs back to
the run position.
Move the choke knob to F and
continue cranking until the engine
runs.
Fuel tank run until completely dry
N
After refueling, press the manual
fuel pump bulb (P) at least
five times – even if the bulb is filled
with fuel.
N
Set the choke lever to suit the
engine temperature.
N
Now start the engine.
Your machine is now ready for
operation.
Stopping the Engine
Move the choke knob to g and
continue cranking until the engine
runs.
Other Hints on Starting
Engine stalls in cold start position g or
under acceleration
N
24
Move the choke knob to < and
continue cranking until the engine
runs.
FS 70 C, FS 70 RC
English
Transporting the Unit
Operating Instructions
During break-in period
The type of transport guard depends on
the metal cutting attachment supplied
with the machine. Transport guards are
available as special accessories.
681BA270 KN
Using transport guard
681BA272 KN
681BA268 KN
230 mm Grass Cutting Blades
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 enginemounted components (ignition,
carburetor) from thermal overload.
681BA269 KN
After Finishing Work
FS 70 C, FS 70 RC
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-ofservice periods – see "Storing the
Machine".
25
English
Cleaning the Air Filter
3
N
Reach into the recess (4) in the filter
housing and take out the felt
filter (5).
N
Fit a new felt filter element (5). As a
temporary measure you can knock it
out on the palm of your hand or blow
it out with compressed air. Do not
wash.
547BA022 KN
2
N
Move the choke lever (1) to <.
N
Turn the screw (2) in the filter
cover (3) counterclockwise until the
cover is loose.
N
Ease the filter cover (3) over the
choke lever and lift it away.
N
Clean away loose dirt from around
the filter.
NOTICE
Replace damaged parts.
N
Fit the felt filter (5) in the filter
housing, make sure it is properly
seated – the arrow points to the
recess.
N
Move the choke lever (1) to <.
N
Fit the filter cover in position,
making sure the screw is square.
Tighten down the screw.
0815BA006 KN
547BA023 KN
If there is a noticeable loss of engine
power
1
Adjusting the Carburetor
4
The carburetor has been set at the
factory to provide an optimum fuel-air
mixture under most operating
conditions.
Adjusting Idle Speed
Engine stops while idling
N
Warm up the engine for about
3 minutes.
N
Turn the idle speed screw (LA)
slowly clockwise until the engine
runs smoothly – the cutting
attachment must not run.
Cutting attachment runs when engine is
idling
N
Turn the idle speed screw (LA)
counterclockwise until the cutting
attachment stops moving and then
rotate the screw another 1/2 to 3/4
turn in the same direction.
WARNING
If the cutting attachment continues to run
when the engine is idling, have your
machine checked and repaired by your
servicing dealer.
26
FS 70 C, FS 70 RC
English
Checking the Spark Plug
N
If the engine is down on power,
difficult to start or runs poorly at idle
speed, first check the spark plug.
N
Fit a new spark plug after about 100
operating hours – or sooner if the
electrodes are badly eroded. Install
only suppressed spark plugs of the
type approved by STIHL – see
"Specifications".
Removing the Spark Plug
N
Shut off the engine.
Remove the spark plug boot (1).
N
Unscrew the spark plug (2).
Installing the Spark Plug
A
N
Clean dirty spark plug.
N
Check electrode gap (A) and
readjust if necessary – see
"Specifications".
N
Rectify the problems which have
caused fouling of the spark plug.
N
Screw the spark plug into the
cylinder.
N
Press the boot firmly onto the spark
plug.
0414BA015 KN
–
Too much oil in fuel mix.
–
Dirty air filter.
–
Unfavorable running conditions.
1
000BA045 KN
N
Use resistor type spark plugs with a
properly tightened adapter nut.
Possible causes are:
1
2
N
000BA039 KN
Spark Plug
WARNING
Arcing may occur if the adapter nut (1) is
loose or missing. Working in an easily
combustible or explosive atmosphere
may cause a fire or an explosion. This
can result result in serious injuries or
damage to property.
FS 70 C, FS 70 RC
27
English
Storing the Machine
If engine running behavior is
unsatisfactory even though the air filter
is clean and the carburetor is properly
adjusted, the cause may be the muffler.
For periods of about 3 months or longer
N
Drain and clean the fuel tank in a
well ventilated area.
Have the muffler checked for
contamination (carbonization) by your
servicing dealer.
N
Dispose of fuel properly in
accordance with local
environmental requirements.
STIHL recommends that you have
servicing and repair work carried out
exclusively by an authorized STIHL
servicing dealer.
N
Run the engine until the carburetor
is dry – this helps prevent the
carburetor diaphragms sticking
together.
N
Remove, clean and inspect the
cutting attachment. Coat metal
cutting attachments with corrosion
inhibitor.
N
N
Sharpening Metal Cutting
Blades
N
Use a sharpening file (special
accessory) to sharpen dull cutting
attachments. In case of more
serious wear or nicks: Resharpen
with a grinder or have the work done
by a dealer – STIHL recommends a
STIHL servicing dealer.
N
Sharpen frequently, take away as
little metal as possible – two or three
strokes of the file are usually
enough.
1
Thoroughly clean the machine – pay
special attention to the cylinder fins
and air filter.
Store the machine in a dry and
secure location – out of the reach of
children and other unauthorized
persons.
1
2
N
1
2
2
002BA113 KN
Engine Running Behavior
Resharpen the teeth (1) uniformly –
do not alter the contour of the parent
blade (2) in any way.
See cutting attachment packaging for
additional sharpening instructions. Keep
the packaging for future reference.
Balancing
N
28
After resharpening about 5 times,
check the cutting attachment for
out-of-balance on a STIHL balancer
(special accessory) or have it
checked by a dealer and rebalanced as necessary – STIHL
recommends a STIHL servicing
dealer.
FS 70 C, FS 70 RC
English
Adjusting Nylon Line
Maintaining the Mowing
Head
STIHL SuperCut
Placing power tool on the ground
Fresh line is advanced automatically if
the remaining line is at least 6 cm
(2 1/2 in) long. The blade on the
deflector trims overlong lines to the
correct length.
002BA104 KN
STIHL AutoCut
N
Shut off the engine.
N
Lay your power tool on its back so
that the cutting attachment
mounting face is pointing up.
Replacing Nylon Line
Always check the mowing head for signs
of wear before replacing the nylon line.
WARNING
If there are signs of serious wear,
replace the complete mowing head.
The nylon mowing line is referred to as
"nylon line" or "line" in the following.
The mowing head is supplied with
illustrated instructions for replacing the
nylon line. Keep the instructions for the
mowing head in a safe place.
N
N
With the engine running, hold the
rotating mowing head above the
grass surface.
N
Tap it on the ground once – fresh
line is advanced and the blade on
the deflector trims it to the right
length.
Fresh line is advanced every time the
mowing head is tapped on the ground.
For this reason observe the mowing
head's cutting performance during
operation. If the mowing head is tapped
on the ground too often, the line limiting
blade will unnecessarily cut off unused
lengths of nylon line.
Line feed operates only if both lines are
still at least 2.5 cm (1 in) long.
STIHL TrimCut
WARNING
To reduce the risk of injury, always shut
off the engine before adjusting the nylon
line by hand.
N
If necessary, remove the mowing
head.
N
FS 70 C, FS 70 RC
Pull the spool up – rotate it about 1/6
turn counterclockwise until it
engages – and allow it to spring
back.
Repeat the above procedure as
necessary until both lines reach the
limiter blade on the deflector.
Rotating the spool from one stop to the
next advances about 4 cm (1 1/2 in) of
fresh line.
Replacing Nylon Line
STIHL PolyCut
Precut lengths of nylon line can be fitted
to the PolyCut in place of the cutting
blades.
STIHL DuroCut, STIHL PolyCut
WARNING
To reduce the risk of injury, always shut
off the engine before refilling the mowing
head.
N
Fit precut lengths of nylon line in the
mowing head as described in the
instructions supplied.
Replacing Cutting Blades
STIHL PolyCut
Always check the mowing head for signs
of wear before installing new cutting
blades.
WARNING
If there are signs of serious wear,
replace the complete mowing head.
The thermoplastic cutting blades are
referred to as "blades" in the following.
Pull ends of the lines outward.
29
English
The mowing head is supplied with
illustrated instructions for replacing the
blades. Keep the instructions for the
mowing head in a safe place.
WARNING
To reduce the risk of injury, always shut
off the engine before installing the
blades.
N
Remove the mowing head.
N
Replace blades as shown in the
illustrated instructions.
N
Mount the mowing head on the
machine.
30
FS 70 C, FS 70 RC
English
Visual inspection (condition, leaks)
X
Complete machine
Clean
Replace any damaged parts
X
Control handle
Check operation
X
X
X
X
Replace
Manual fuel pump (if fitted)
Pickup body in fuel tank
X
X
Check
X
Replace
Clean
Carburetor
Check idle adjustment – the cutting
attachment must not run
X
X
X
X
Cooling inlets
X
X
Readjust electrode gap
X
Replace after every 100 operating hours
Visual inspection
Clean
All accessible screws and nuts (not adjustRetighten
ing screws)
FS 70 C, FS 70 RC
X
X
Adjust idle speed
Spark plug
X
X
Have repaired by servicing dealer1)
Fuel tank
as required
X
X
Clean
Check
if damaged
if problem
every 12 months
monthly
X
X
Visual inspection
Air filter
weekly
after each refueling stop
before starting work
The following intervals apply to normal operating conditions only. If your daily working time is longer or operating conditions are difficult (very dusty work area, etc.),
shorten the specified intervals accordingly.
after finishing work or daily
Maintenance and Care
X
X
X
31
Visual inspection
Cutting attachment
X
as required
if damaged
if problem
every 12 months
monthly
weekly
X
Check tightness
X
Sharpen
X
Safety labels
Replace
32
X
Replace
Metal cutting attachment
1)
after each refueling stop
before starting work
The following intervals apply to normal operating conditions only. If your daily working time is longer or operating conditions are difficult (very dusty work area, etc.),
shorten the specified intervals accordingly.
after finishing work or daily
English
X
X
X
STIHL recommends an authorized STIHL servicing dealer.
FS 70 C, FS 70 RC
English
Minimize Wear and Avoid
Damage
Observing the instructions in this manual
helps reduce the risk of unnecessary
wear and damage to the power tool.
The power tool must be operated,
maintained and stored with the due care
and attention described in this owner's
manual.
servicing dealer. STIHL dealers are
regularly given the opportunity to attend
training courses and are supplied with
the necessary technical information.
Alterations or modifications to the
product not approved by STIHL.
–
Using tools or accessories which
are neither approved or suitable for
the product or are of a poor quality.
–
Using the product for purposes for
which it was not designed.
–
Using the product for sports or
competitive events.
–
Consequential damage caused by
continuing to use the product with
defective components.
Maintenance Work
–
Damage to the engine due to
neglect or deficient maintenance
(e.g. air and fuel filters), incorrect
carburetor adjustment or
inadequate cleaning of cooling air
inlets (intake ports, cylinder fins).
–
Corrosion and other consequential
damage resulting from improper
storage.
–
Damage to the machine resulting
from the use of poor quality
replacement parts.
–
Spark plug
Parts Subject to Wear and Tear
Some parts of the power tool are subject
to normal wear and tear even during
regular operation in accordance with
instructions and, depending on the type
and duration of use, have to be replaced
in good time. Among other parts, this
includes:
All the operations described in the
"Maintenance Chart" must be performed
on a regular basis. If these maintenance
operations cannot be performed by the
owner, they should be performed by a
servicing dealer.
–
Cutting attachments (all types)
–
Mounting hardware for cutting
attachments (rider plate, nut, etc.)
–
Deflectors for cutting attachments
–
Clutch
STIHL recommends that you have
servicing and repair work carried out
exclusively by an authorized STIHL
–
Filters (air, fuel)
FS 70 C, FS 70 RC
Rewind starter
If these maintenance operations are not
carried out as specified, the user
assumes responsibility for any damage
that may occur. Among other parts, this
includes:
The user is responsible for all damage
caused by non-observance of the safety
precautions, operating and maintenance
instructions in this manual. This includes
in particular:
–
–
33
English
Main Parts
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
#
5
2
1
4
6
8
7
3
9
10
20
12
14
13
16
15
11
17
Manual fuel pump
Tank cap
Tank
Starter grip
Spark plug boot
Muffler
Throttle trigger
Stop switch
Throttle trigger lockout
Bike handle (handlebar)
Handle support
Carrying ring
Throttle cable retainer
Carburetor adjusting screws
Choke lever
Air filter cover
Machine support
Loop handle
Barrier bar (country specific)
Drive tube
Sleeve
Serial number
18
19
21
12
8
9
7
#
34
0414BA017 KN
20
FS 70 C, FS 70 RC
English
Noise and Vibration Data
Specifications
Noise and vibration data measurements
include idling and rated maximum speed
with the same duration of exposure.
Engine
2
3
1
1
2
3
4
5
4
002BA270 KN
5
Single cylinder two-stroke engine
Mowing head
Deflector for mowing heads only
Blade
Deflector for grass cutting blades
only
Grass cutting blade
Displacement:
Bore:
Stroke:
Engine power to
ISO 8893:
Idle speed:
Cut-off speed (rated):
Max. output shaft
speed (cutting
attachment):
27.2 cc
34 mm
30 mm
0.9 kW (1.2 bhp)
at 8,500 rpm
2,800 rpm
10,000 rpm
8,600 rpm
Electronic magneto ignition
NGK CMR 6 H
0.5 mm
Fuel System
All position diaphragm carburetor with
integral fuel pump
Fuel tank capacity:
340 cc (0.34 l)
Weight
Dry, without cutting attachment and
deflector
FS 70 C:
5.4 kg
FS 70 RC:
4.8 kg
FS 70 C, FS 70 RC
Sound pressure level Lp to ISO 22868
FS 70 C
with mowing head:
with metal tool:
94 dB(A)
94 dB(A)
FS 70 RC
with mowing head:
with metal tool:
94 dB(A)
94 dB(A)
Sound power level Lw to ISO 22868
Ignition System
Spark plug (resistor
type):
Electrode gap:
For further details on compliance with
Vibration Directive 2002/44/EC see
www.stihl.com/vib.
FS 70 C
with mowing head:
with metal tool:
107 dB(A)
107 dB(A)
FS 70 RC
with mowing head:
with metal tool:
107 dB(A)
107 dB(A)
Vibration measurement ahv,eq to
ISO 22867
FS 70 C
Handle,
left
Handle,
right
with mowing
head:
7.0 m/s2
with metal tool: 6.6 m/s2
5.5 m/s2
6.6 m/s2
35
English
FS 70 RC
Handle,
left
with mowing
head:
7.6 m/s2
with metal tool: 6.6m/s2
Handle,
right
2
6.0 m/s
6.6 m/s2
The K-factor in accordance with
Directive 2006/42/EC is 2.0 dB(A) for
the sound pressure level and sound
power level; the K-factor in accordance
with Directive 2006/42/EC is 2.0 m/s2
for the vibration level.
REACH
REACH is an EC regulation and stands
for the Registration, Evaluation,
Authorisation and Restriction of
Chemical substances.
For information on compliance with the
REACH regulation (EC) No. 1907/2006
see www.stihl.com/reach.
Exhaust Emissions
The CO2value measured in the EU type
approval procedure is specified at
www.stihl.com/co2.
described in this instruction manual. The
type approval expires if the engine is
modified in any way.
Maintenance and Repairs
Users of this machine may only carry out
the maintenance and service work
described in this user manual. All other
repairs must be carried out 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.
When repairing the machine, only use
replacement parts which have been
approved by STIHL for this power tool or
are technically identical. Only use highquality replacement parts in order to
avoid the risk of accidents and damage
to the machine.
STIHL recommends the use of original
STIHL replacement parts.
Original STIHL parts can be identified by
the STIHL part number, the {
logo and the STIHL parts symbol K
(the symbol may appear alone on small
parts).
The measured CO2value was
determined on a representative engine
in accordance with a standardized test
procedure under laboratory conditions
and does not represent either an explicit
or implied guarantee of the performance
of a specific engine.
The applicable exhaust emission
requirements are fulfilled by the
intended usage and maintenance
36
FS 70 C, FS 70 RC
English
Disposal
EC Declaration of Conformity
ANDREAS STIHL AG & Co. KG
Badstr. 115
D-71336 Waiblingen
Observe all country-specific waste
disposal rules and regulations.
Germany
ANDREAS STIHL AG & Co. KG
Produktzulassung (Product Licensing)
The year of manufacture and serial
number are applied to the product.
Done at Waiblingen, 28.11.2018
ANDREAS STIHL AG & Co. KG
000BA073 KN
declare in exclusive responsibility that
the product
STIHL products must not be thrown in
the garbage can. Take the product,
accessories and packaging to an
approved disposal site for environmentfriendly recycling.
Contact your STIHL servicing dealer for
the latest information on waste disposal.
Category:
Make:
Model:
Serial identification:
Displacement
Brushcutter
STIHL
FS 70 C
FS 70 C-E
FS 70 RC
FS 70 RC-E
4144
27.2 cc
Thomas Elsner
Director Product Management and
Services
conforms to the provisions of Directives
2011/65/EU, 2006/42/EC, 2014/30/EU
and 2000/14/EC and has been
developed and manufactured in
compliance with the following standards
in the versions valid at the time of
production:
EN ISO 11806-1, EN 55012,
EN 61000-6-1
The measured and guaranteed sound
power levels were determined according
to Directive 2000/14/EC, Annex V, using
the ISO 10884 standard.
Measured sound power level
107 dB(A)
Guaranteed sound power level
109 dB(A)
Technical documents deposited at:
FS 70 C, FS 70 RC
37
0458-570-0121-D
englisch
G
www.stihl.com
*04585700121D*
0458-570-0121-D