Stihl FS 88, FS 108 Owner's Manual
STIHL
FS
BB,
7DB
Instruction
Owner's
Assembling
SafetyPrecautions
Operating
Maintenance
Manual
Manual
Instructions
Contents
This manual contains warnings,
Parts and Controls Starting
- Version with Bike Handle 2 Adjusting Carburetor 37 operating and safety precautions for the
- Version with Loop Handle 4
- Version with Loop Handle and Checking Spark Plug
Standoff Lever 4 Cleaning Air Filter
Safety Precautions and Lubricating Gearbox 42
Working Techniques
Selecting the Cutting Tool 18 Sharpening Cutting Tools
Mounting the Bike Handle 20 - Grass Cutting Blade 230-4
loop
Mounting
Standoff Lever
Mounting the Loop Handle - Circular Saw Blade 200
- Version A 22
- Version B
Mounting the Deflector 24 (scratcher tooth)
- Fitting stop 24 Replacing Starter Rope and
Mounting the Cutting Tools 25 Rewind Spring
- STIHL Supercut 2-2 26
- STIHL Supercut 20-2
- STIHL Autocut 25-2
- STIHL Autocut 30-2 26 Maintenance Chart
- STIHL Autocut 24-2
- STIHL Polymatic 30-2 27 Special Accessories
- STIHL Polycut 40-3
- STIHL Fixed Line Head
- Grass Cutting Blade 230
- Brush Knife 250
- Circular Saw Blade 200
Fuel
Fueling
Fitting the Harness 32
Printed on chlorine-free paper
© 1996
Andreas
0458 357 3021. M5.C 6 S
Handle with - Grass Cutting Blade 230-8
Stihl.
Waiblingen
100813970
PrintedinJapan
Operating Instructions 40 STIHL
6 Lubricating Drive Shaft 42
21
- Brush Knife 250 45
(chisel tooth) 46
- Circular Saw Blade 200
23
Spark Arresting Screen
26 Muffler
26 Storing the Machine
27 Specifications
28
28
29
29
30
31
32
in
STIHL®
34
FS
88 and FS 108 brushcutters.
Pay special attention to the safety
41
41
precautions outlined on pages 6 to 17.
Allow only persons who understand this
manual to operate your brushcutter.
To
43
44
47
48
51
51
52
53
55
receive maximum performance and
satisfaction from your STIHL brush-
itisimportant that you read and
cutter,
understand the maintenance and safety
precautions before using your brush-
cutter. Contact your STIHL dealer
STIHL distributor for your area if you do
not understand any of the instructions
this manual.
Warn
ng!
Because a brushcutterisa high-speed
cutting tool some special safety pre-
cautions must be observed to reduce
the risk of personal injury. Careless or
improper use may cause serious or
even fatal injury. Make shure your unit is
equipped with the proper deflector,
handle and harness for the type of
cutting attachment being used. Always
proJ<.er
wear
STIHL's philosophy
improve all of its products. As a result,
engineering changes and improve-
ments are made from time to time.
operating characteristics or the appear-
ance of your brushcutter differs from
those described
contact your STIHL dealer for informa-
tion and assistance.
eye protection.
is
to continually
in
this manual, please
or
the
If
the
in
1
Parts and Controls
Version with Bike Handle
2
9
1
1 = Handle support
= Throttle trigger
2
= Slide control
3
= Throttle trigger interlock
4
5
= Bike handle
= Throttle cable retainer
6
7
= Carrying loop
= Throttle cable / stop switch wire
8
= Spark plug terminal
9
= Air filter cover
10
11
= Choke lever
= Machine support
12
13
= Fuel tank
= Fuel filler cap
14
= Starter grip
15
16
= Carburetor adjusting screws
= Muffler
17
= Deflector (for all cutting
18
tools, without skirt)
= Metal cutting
19
(cutting blade 230)
Itool
2
Definitions
1.
Handle
Connects the drive shaft
to
2.
Throttle
Controls the speed of the engine.
3. Slide
Starting throttle lock and stop switch.
Keeps the throttle partially open
during starting and switches the
engine's ignition off and stops the Eases engine starting
4.
Throttle
Must
throttle trigger can
support.
the handle bars.
trigger.
control.
engine.
trigger
be
depressed before the
interlock.
be
activated.
Throttle
8.
Connect operator's control grip to
the powerhead.
9.
Spark
Connects the spark plug
ignition wire. from operator.
10.
Air
Covers the air filter element.
11.
Choke
by
12. Machine
For resting machine
cable/stop
plug
filter cover. 18. Deflector.
lever.
enriching mixture.
support.
switch
wire.
terminal. Attenuates exhaust noises
to
the and diverts exhaust gases away
on
the ground.
16.
Carburetor
For tuning carburetor.
17.
Muffler.
The deflector
the risk of injury from foreign objects
flung backwards toward the operator
by the cutting tool and from contact
with the cutting tool.
19.
Cutting
The cutting attachment,i.e.
made from metal for different purposes (special accessory).
adjusting
is
designed to reduce
tool.
screws.
blade,
13. Fuel
tank.
5. Bike handle. For fuel and oil mixture.
To
hold
the
brushcutter
with both hands.
14. Fuel filler cap.
For closing the fuel tank.
6. Throttle cable retainer.
Fixes the throtlle cable
on the drive shaft.
15. Starter grip.
The grip of the pull starter,
which
is
the device to start
7. Carrying lOop. the engine.
The device to connect the
brushcutler to the harness.
.......>
3
8
17
Version
handle
10=
11
12 = Fuel tank
13
14
15
16
17
18
19
with
Loop
Handle
and
with
standoff
1 = Loop handle
= Standoff lever
2
3
= Carrying loop
(not all markets)
= Slide control
4
5
= Throttle trigger
= Throttle trigger interlock
6
= Throttle cable / stop switch wire
7
8
= Spark plug terminal
= Air filter cover
9
Choke lever
lever
= Machine support
= Fuel filler cap
= Starter grip
= Carburetor adjusting screws
= Muffler
= Deflector (for mowing heads)
= Line limiting blade
= Cutting tool
loop
19
4
18
Definitions
1.
Loop
handle. ignition wire. and diverts exhaust gases away
For easy control of
machine during cutting work.
8.
Connects the spark plug
Air
9.
filter
Covers the air filter element.
terminal.
cover.
to
the Attenuates exhaust noises
16. Muffler.
from operator.
Spark
plug
17. Deflector.
Standoff
2.
Helps keep unit at a safe distance
from operator's feet and legs. Eases engine starting
3.
Carrying
The device to connect the
brushcutter to the harness. For resting machine on the ground. 18.
4.
Slide
Starting throttle lock and stop switch. For fuel and oil mixture.
Keeps the throttle partially open
during starting and switches the
engine's ignition off and stops the 13.
engine. For closing the fuel tank. head, for different purposes
5.
Throttle
Controls the speed of the engine. The grip of the pull starter,
Throttle
6.
Mustbedepressed before the
throttle trigger can be activated.
lever. The deflectorisdesigned to reduce
Choke
lever. the risk of injury from foreign objects
flung backwards toward the operator
by enriching mixture. by the cutting tool and from contact
with the cutting tool.
Machine
Fuel
Starter
which is the device
the engine.
Carburetor
For tuning carburetor
filler
grip.
support.
cap.
adjusting
to
start
screws.
Line
limiting
Metal blade at the deflector
to
keep the line of the mowing head
at the proper length.
19.
Cutting
The cutting attachment,
(special accessory).
blade.
tool.
....,.
loop.
control.
trigger.
trigger
10.
11.
12. Fuel tank.
14.
interlock.
15.
in
order
i.e.cutting
7.
Throttle
Connect operator's control grip to
the powerhead.
cable/stop
switch
wire.
5
Safety Precautions and
Working Techniques
anlgl
Because a brushcutter is
, a high-speed, fast-cutting
• power tool, special safety
&
precautions must be obseNed to reduce
the risk of personal injury.
It
is important that you
read, fully understand
and obseNe the following
safety precautions and
warnings. Read the owner's manual and
the safety instructions periodically. Careless or improper use of any brushcutter
may cause serious or fatal injury.
Have your STIHL dealer show you how
to
operate your brushcutter.
applicable local safety regulations,
standards and ordinances.
Warning!
The use of any brushcutter may be
hazardous.
comesincontact with your body, it will
cut you. When it comes
solid foreign objects such as rocks
bits of metal, it may fling them directly or
by ricochet
or
the operator.
Striking such objects could damage the
cutting attachment and may cause
blades to crack, chip or break.
STIHL does not recommend the use of
rigid blades when cutting
Thrown objects or damaged blades may
result
operator or bystanders.
If
the rotating cutting
in
the direction of bystanders
in
serious or fatal injury to the
ObseNe
in
contact with
in
stony areas.
all
1001
or
Warning!
Minors should never be allowedtouse
a brushcutter. Bystanders, especially
children, and animals should not be
allowed
isinuse.
Never let the brushcutter run unattended.
Warning!
Do not lendorrent your brushcutter
without the owner's manual. Be sure
that anyone using your brushcutter understands the information contained
this manual.
in
the area where a brushcutter
in
Most of these safety precautions and
warnings apply to the use of all STIHL
brushcutters. Different models may have
different parts and controls. See the
appropriate section of yourowner's
manual for a description of the controls
and function of the parts of your model
bruShcutter.
Safe use of a brushcutter involves
1. the operator
2.
the brushcutter
3.
the use of the brushcutter.
6
THE OPERATOR!
Physical Condition
You
must beingood physical condition
and mental health and not under the
influence of any substance (drugs,
alcohol, etc.) which might impair vision,
dexterity or judgment. Do not operate a
brushcuJter when you are fatigued.
Be
alert -ifyou get tired while operating
your brushcutter, take a break.
Tiredness may result
Working with any brushcutter can be
strenuous.
might
check with your doctor before operating
a brushcutter.
Prolonged use of a brushcutter (or other
machines) exposing the operator
vibrations may produce whitefinger disease (Raynaud's phenomenon) or carpal tunnel syndrome. These conditions
reduce the hand's ability
late temperature, produce numbness
and burning sensations and may cause
nerve and circulation damage and tissue
necrosis.
Warnlngl
Antivibration systems do not guarantee
that you will not sustain whitefinger disease or carpal tunnel syndrome.
Therefore, continual and regular users
should monitor closely the condition of
their hands and fingers.
above symptoms appear, seek medical
advice immediately.
If
you have any condition that
be
aggravated by strenuous work,
in
loss of control.
to
feel and regu-
If
any of the
to
Proper Clothing
Warning!
0·0
(i
flector provided with your brushcutter
may not protect the operator from all
foreign objects (gravel, glass, wire, etc.)
thrown by the wheeling cutting attachment. Thrown objects may also ricochet
and strike the operator. Therefore,
duce the risk of injury
operate a brushcutter unless wearing
goggles or properly fitted safety glasses
with adequate top and side protection
complying with ANSI Z
licable national standard).
Brushcutter operation can
cause serious injurytoeyes,
ears and person. The de-
to
to
your eyes never
87.1
(or your app-
U)
o
o
.q:
en
o
o
o
re-
To
reduce the risk of injurytoyour face
STIHL recommends that you also wear
a face shield or face screen over your
goggles or safety glasses.
WarnIng!
Brushcutter noise may damage your
hearing. Wear sound barriers (ear plugs
or ear mufflers) to protect your hearing.
Continual and regular users should have
their hearing checked regularly.
Wear proper protective clothing.
Protect your hands with gloves when
handling the brushcutter and the cutting
tooi. Heavy-duty, nonslip gloves improve
your grip and protect your hands.
Clothing must be sturdy and snug·fitting,
but allow complete freedom of movement. Avoid loose-fitting jackets, scarfs,
neckties, jewelry, flared or cuffed pants,
unconfined long hair or anything that
could become caught
brush
Of-
moving parts of the unit. Wear
long' pants made of heavy material
protect your legs. Do not wear shorts.
Good footing
brushcutter work. Wear sturdy boots
with nonslip soles. Steel-toed safety
boots are recommended. Wear
approved safety hard hattoreduce the
risk of injury to your head when there is
a danger of head injuries.
is
on
branches,
most important
to
in
an
7
THE
BRUSHCUTIER
For illustrations and definitions of the
brushcutter parts see the chapter on
"Parts and Controls"!
A
~
Warning'
in
any
Never modify a brushcutter
way.
Only attachments supplied by STIHL or
expressly approved by STIHL for use
with the specific STIHL brushcutter
models are authorized. Although certain
unauthorized attachments are useable
for the STIHL brushcutter, their use
may,
in
fact, be extremely dangerous.
THE USE OF THE
BRUSHCUTIER
Transporting the brushcutter
Warning!
Always turn
off the engine and make
sure the cutting attachment has stopped before putting a brushcutter down.
When transporting your brushcutter in a
vehicle, properly secure
ittoprevent
turnover, fuel spillage and damage to
the brushcutter. Keep metal cutting
tools covered with the transport guard
(optional accessory).
Preparation for the
use
of the
brushcutter
Adjust carrying harness and hand grip
to suit your size before starting work.
The machine should be properly
balanced as specified
in
your owner's
manual for proper control and less
fatique in operation.
B
o
o~
o
~
Always check your bruhcutter for
proper condition and operation before
starting, particularly the throttle trigger,
throttle trigger interlock (if applicable
stop switch, cutting tool, deflector and
harness.
Arrows on the deflector (A) and stop (8)
show the correct direction of rotation of
the cutting tool.
The throttle trigger must move freely
and always spring back to the idle
position. The cutting tool must be
properly tightened and
condition. Inspect for loose parts (nuts,
screws, etc.) and for cracked, bent,
warped or damaged blades.
in
safe operating
~
0
«
al
0
0
0
,...
o
o
ca
o
g
Fueling
Your STIHL brushcutter uses an oilgasoline mixture for fuel (see the chapter on "Fuel" of your owner's manual).
Warning!
Gasoline is an extremely flammable fuel.
Ir
spilled or ignited by a spark or other
ignition source, it can cause fire and
serious burn injury or property damage.
Use extreme caution when handling
gasoline or fuel mix.
Do not smoke or bring any fire
or
flame
near the fuel.
8
Fueling Instructions
in
Fuel your brushcutter
areas, outdoors.
l
rntng
Gasoline vapor pressure may build up
inside the gas tank of a two cycle engine
depending on the fuel used, the weather
condition, and the venting system of the
tank.
In
order to reducethrisk of
personal injury from escaping gas vapor
and fumes, remove the fuel filler cap on
your brushcutter carefully so as to allow
any pressure build-up
release slowly. Never remove fuel filler
cap while engine
ground for fueling and move at least 10
feet
(3
m) from the fueling spot before
starting the engine. Wipe off any spilled
fuel before starting your brushcutter and
check for leakage.
.
arnmg!
Check for fuel leakage while refueling
and during operation.
leakage
engine until leak is fixed and spilled fuel
has been wiped away.
change your clothing immediately.
is
found, do not start or
well-ventilated
in
the tank
is
running. Select bare
If
fuel or oil-
run
If
this happens,
to
the
Warning!
'\
~
J1~
loosen or come off and
spill quantities of fuel.
risk of fuel spillage and fire, tighten fuel
cap by hand with as much force as
Unit vibrations can
.(
cause an Improperly
tightened fuel cap to
In
ordertoreduce
possible. The screw driver end of the
STIHL combination wrench
similar tool can be used as an aid
tightening slotted fuel caps.
Starting
or
other
in
Warning!
Your brushcutterisa oneperson machine. Once started
jekts for a great distance.
To
reduce the risk of eye and other injury
insure that bystanders are at least 50
feet (15 m) away. Stop the engine and
cutting tool immediately
approached. Start and operate your
brushcutter without assistance. For
specific starting instructions, see the
appropriate section of your manual.
Place the brushcutter on firm ground or
other solid surface
Maintain a good balance and secure
footing.
it
may fling foreign ob-
if
you are
in
an open area.
To
reduce the risk of injury from loss of
control, be absolutely sure that the
ting tool is clear of you and all other
obstructions and objects, including the
ground, because when the engine starts
at starting-throttle, engine speed will
fast enough for the clutch to engage and
turn the cutting tool.
cut-
be
'-
When you pull the starter grip, don't
wrap the starter rope around your hand.
Do not allow the grip
guide the starter rope to rewind properly.
Failure to follow this procedure may
result
in
injury to handorfingers and
may damage the starter mechanism.
to
snap back, but
9
\
f\
'"
;:;
...
CD
8
o
I
~
Before cutting, inspect
the area for stones, glass,
pieces of metal, trash or
other solid objects. The
cutting attachment could throw objects
of this kind.
To
reduce the
. risk of injury
from thrown
~.
never operate a brushcutter without a
properly mounted deflector. Keep the
skirt on the deflectors adjusted properly
at all times (see chapter
various cutting tools of your owner's
manual). Do not overreach. Keep proper
footing and balance at all times.
objects and
blade contact,
on
mounting the
Working Conditions
Operate and start your brushcutter only
outdoors
the brushcutter under good visibility
and daylight conditions only. Work
carefully.
Always hold the brushcutter firmly with
both hands. Wrap your fingers tightly
around the handles, keeping the hand-
les cradled between your thumb and
forefinger. Keep your hands
on, to have your brushcutter under con-
trol at all times. Make sure your brush-
cutter handles and grip are
dition and free of moisture, pitch, oil or
grease.
10
in
a ventilated area. Operate
in
this positi-
in
good con-
Warningl
Never attempttooperate any brush
cutter with one hand. Loss of control of
the brushcutter resulting
fatal injury may result.
To
reduce the risk of bodily injury
resulting from loss of control and contact
with the cutting tool, make sure your
is
equipped with the proper handle ana
harness for the type of cutting attachment being used (see chart
on "Selecting the Cutting Tool").
Special care must be taken
conditions (wet ground, snow) and
difficult, over-grown terrain. Watch for
hidden obstacles such as tree stumps,
roots and ditches to avoid stumbling.
in
serious or
in
in
unif':-
chapter
slippery
in
Waming'
This brushcutterisnormally to be used
at ground level with the cutting attachment parallel
brushcutter above ground level or with
the cutting attachment perpendicular
the ground may increase the risk of
injury, since the cutting attachment
more fully exposed and the brushcutter
may be more difficult
use your brushcutter as a hedge
trimmer.
to
the ground. Use of a
to
control. Never
is
to
W mmg!
When using rigid blades, avoid cutting
close to fences, sides of buildings, tree
trunks, stones or other such objects
that could cause the brushcutter to kick
out or could cause damage to the
blade. STIHL recommends use of the
nylon line heads or Polycut head for
such jobs.
increased possibility of ricochets
such situations.
Do not operate using the starting
throttle lock as you do not have control
of the engine speed. See section of your
owner's manual on the proper use of the
slide control.
If
the cutting tool or deflector becomes
clogged or stuck, always turn off the
engine and make sure the cutting tool
has stopped, before cleaning. Grass,
weeds, etc. should be cleaned off the
cutting tool at regular intervals.
In
addition, be alert to an
in
Warning!
During CUlling, check the tightness and
the condition of the cutting tool at
regular intervals.
tool changes, stop the engine immediately, and check the nut securing
the tool for tightness and the cutting tool
for cracks and damage.
Replace cracked, bent, warped, dam
aged or dull cutting tools immediately.
Such tools may shatter at high speed
and cause serious or fatal injury.
If
the behavior of the
Warn'ng'
A loose blade may cause the blade
vibrate, crack, break or come off the
brushcutter, which may result
serious or fatal injury. Make sure that
the blade is properly tightened. Use the
wrench supplied or one of sufficient
length to obtain the proper torque.
blade loosens after being properly
tightened, stop work immediately. The
retaining nut may be worn or damaged
and should be replaced. Never use
unauthorized parts to secure the blade.
If
the blade continuestoloosen, see
your STIHL dealer. Never use a
brushculler with a loose blade.
to
in
If
the
Important adjustments
amlng'
To
reduce the risk of personal injury from
loss of control or contact with the running grass cutting blade, do not use a
grass cutting blade with incorrect idle
adjustment. At correct idle speed, the
grass cutting blade should not move.
For directions to adjust idle speed, see
the appropriate section of your owner's
manual.
If
you cannot set the correct idle speed,
have your STIHL dealer check your
brushcutter and make proper
adjustments or repairs.
Waming'
Never touch a rotating cutting tool with
your hand or any part of your body. It
continues to rotate for a short period
after the throttle trigger
(flywheel effect).
is
released
Operating instructions
amln91
w
o Improper use of any
~
(jG
fatal personal injury. Read, understand
and follow all safety instructions
owner's manual before operating these
products.
injury
To
to
the operator from blade contactand thrown objects, make sure your
unit
is
equipped with the proper deflector, handle and harness for the type
of cutting attachment being used ( see
chart
in
chapter on "Selecting the Cutting Tool"). Always wear proper eye protection.
brush-cutter can
cause serious or
in
your
reduce the risk of personal
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Do not cut any material other than
grass, brush and wood. The cutting
tools may be used only for the
operations described
in
your manual.
With the engine running, attach the
brushcutter to the spring hook of your
harness (see appropriate chapter of this
manual).
USING THE CUTTING TOOLS
For an illustration of the various cutting
tools and instructions on proper mounting see the chapter on "mounting the
cutting tools"
in
your owner's manual.
Using the mowing heads
The STIHL Supercut, Autocut, Polymatic
and Polycut mowing heads produce a
clean and tidy finish.
They are
to
be used only on brushcutters equipped with a chopper blade
the deflectorinorder to keep the line at
the proper length (see "Parts and
Controls" chapter of this manual).
If
the lawn edges are planted with trees
or bordered
by
a fence etc..itisbest
use a nylon line head.Itachieves a
"softer" cut with less risk of damaging
tree bark than with the polymer blades.
However, the polymer bladed STIHL
"Polycut" produces a better cut
are no plants along the edge of the lawn.
Sharpening
is
not necessary and worn
cutting blades are easily replaced.
Warnmg!
To
reduce the risk of serious injury.
never use wire or metal-reinforced line
"':--
or other materialinplace of the nylon
cutting lines. Pieces of wire could break
off and be thrown at high speed toward
the operator or bystanders.
STIHL "Supercut" mowing head
Fresh line
Frayed line
is
advanced automatically.
is
replaced by a simple
adjustment (see instruction sheet
supplied with mowing head).
if
in
to
there
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STIHL
"Polymatic"
Frayed line
is
mowing
head
replaced by a simple
adjustment (see instruction sheet
supplied with mowing head).
STIHL
"Autocut"
mowing
head
Nylon cutting cord advances automatically when tapped against the ground.
STIHL
"Polycut"
mowing
head
Important!
Three rectangular wear limit marks are
of
applied to the base (periphery)
To
Polycut.
reduce the risk of serious
the
injury from breakage of the head or
blades, the Polycut must not be used
whenithas worn as far as one of these
marks.
Itisimportant to follow the
maintance instructions supplied with
the head!
Using
the
grass
cutting
All
kinds of grass and weeds can be
blade
easily cut with the cutting blade. The
is
brushcutter
swept in an
arcsimiliar to a scythe.
Warmngl
To
reduce the riskofserious or fatal
injury never attempt to cut woody
materials.
The
4-tooth
grass cutting blade
is
intentedtocut grass and weeds.
It
has 4 cutting knives with cutting edges
on
both sides, i.e. front and
The
8-tooth
grass cutting blade
rear.
is
recommended for cutting fern or reed.
Both bjades have to be resharpened
'-
when all cutting edges are dull.
13
Using the brush knife
Warnlngl
Warning!
When fittedtothe brushcutter, the
brush knife
ranging from cutting matted grass to
clearing weeds, wild growth and scrub.
To
cut wild growth and scrub, lower the
rotating brush knife down onto the
growth to achieve a chopping effect.
Use the brushcutter like a scythe to cut
grass,
is
suitable for applications
i.e.
sweepitto and froinan
arc.
Warning!
When cutting woody materials, use the
left side of the blade to avoid "kickout"
(blade thrust) situations.
14
Improper use of a brush knife may
cause
it
to crack, chip or shatter. Thrown
parts may seriously injure the operator
or bystanders.
personal injury
following precautions:
Avoid contact with hard or solid foreign
objects such as stones, rocks or pieces
of metal.
Never cut wood or shrubs with a stem
diameter of more than 2cm (3/4") use a circular saw blade for such work.
Inspect the brush knife at regular short
intervals for signs of damage. Do not
continue working with a damaged brush
knife. Resharpen the brush knife regUlarly (when
To
reduce the risk of
it
is essential to take the
it
has dulled noticeably).
When cutting young saplings or other
woody materials up
diameter, use left side of the blade
avoid "kickout" situations (see
appropriate section
not attempt to cut woody material with a
larger diameter, since the blade may
catch or jerk the brushcutter forward.
This may cause damage
brushcutter or loss of control of the
brushcutter, resulting
to
2cm (3/4")
in
this manual). Do
to
the blade or
in
personal injury
in
to
<D
o
<{
en
o
o
o
Using the circular saw blade
Circular saw blades are suitable for
thinning brush and cutting small trees up
to a diameter of 7 cm
(23/4
in). Do not
attempt to cut trees with larger
diameters, since the blade may catch or
jerk the brushcutter forward. This may
cause damage to the blade or loss of
control of the brushcutter which may
result
in
serious injury.
When the brushcutter with circular saw
to
blade is used
cut down small trees,
STIHL recommends that the standard
deflector beremoved and replaced by
the special "stop" (see chapter "circular
saw blade" for mounting instructions).
This stop helps to keep the brushcutter
positioned against the tree during the
cutting process. Inexperienced users
should place the left side of the stop
against the tree trunk before beginning
to cut. This act will keep the brushcutter against the tree during the
cutting operation and will reduce the
risk of loss of control and possible
kickout (described in the following
section).
Warning'
In
ordertoreduce the risk of injury from
thrown objects
or
from operator
contact with the cutting tool, be sure
remount the standard deflector for all
other
u·ses.
Before starting the cut, accelerate the
engine up
to
full throttle. Perform cut
with uniform pressure. STIHL recom-
mends that the circular saw blade be
applied to the right of the tree, using
the non-shaded area of the blade.
amlngl
N
The risk of kickout is highest when
o
cutting in the darker shaded area.
<{
en
o
reduce the risk of kickout and resulting
o
o
injury, do not use this area of the
circular saw blade for cutting trees or
shrubs. Special techniques using the
lighter shaded areas of the blade to cut
shrubs and trees should only
by experienced operators with specialized training
in
use and control of the
brushcutter.
To
redUce the risk of serious injury
to
the operator or bystanders by a
kickout, never use a circular saw blade
on a brushcutter with a loop handle.
be
to
To
used
15
MAINTENANCE, REPAIR AND
STORING
Use only identical STIHL replacement
parts for maintenance and repair.
Use of parts manufactured by others
may cause serious or fatal injury.
Follow the maintenance and repair
instructions
your owner's manual. Please refer
in
the appropriate section of
to
maintenance chart at the last pages of
this manual.
the
Risk of "kickout" (blade thrust)
with all rigid cutting blades
Warning
l
Kickout (blade thrust) is the sudden and
uncontrolled motion towards the operator's right or rear that can occur when
the shaded area of the rotating blade
comes
in
cont<;:lct
with a solid object like
a tree, rock, bush or wall. The rapid counterclockwise rotation of the blade may
be stopped or slowed, and the
cutting attachment may be thrown
area
to
the right or to the rear.
in
an
16
N
;;
~
§
This kickout (blade thrust) may cause
loss of control of the brushcutter and
may result
operator or bystanders.
risk, extreme caution should be used
when cutting with the shaded area of
nay rigid blade and never use a rigid
blade on a brushcutter with a loop
handle.
in
serious or fatal injury to the
To
reduce the
arnmgl
Always stop the engine and make sure
that the cutting tool
is
stopped before doing any maintenance or repair work or
cleaning the brushcutter. Do not attempt
any maintenance or repair work not
described
in
your owner's manual. Have
such work performed at yourSTIHL
service shop only.
Never repair damaged cutting attachments by welding, straightening or
modifying the shape. This may cause
parts of the cutting tool
result
in
seriousorfatal injuries.
to
come off and
Check condition of culling tool at regular
short intervals.
changes, check it immediately for
tightness or any signs of cracks
ticular. Replace damaged or dull cUlling
tools immediately, even if they have only
superficial cracks.
after being properly tightened, the
retaining nut may be worn or damaged
and should be replaced.
continues
dealer. Do not attach any blade to a unit
without proper installation of all required
parts. Never use unauthorized parts to
secure the blade. Failure to use the
proper parts may cause the blade
If
behavior of tool
If
the blade loosens
If
the blade
to
loosen, see your STIHL
in
par-
to
fly
off and seriously injure the operator or
bystanders.
Check fuel filler cap for leaks at regular
intervals. Use the specified spark plug
and make sure
are always
it
and the ignition lead
in
good condition.
Warning!
Do
not operate your brushcutter if the
muffler
is
damaged, missing or modefied. An improperly maintained muffler
will increase the risk of fire and hearing
loss. Never touch a hot muffler or burn
will
result.Ifyour muffler was equipped
with a spark-arresting screen
the risk of fire (e.g.
and Australia), never operate your hedge
trimmer if the screen
ged. Remember that the risk of forest
res is greaterinhot or dry weather.
in
the USA, Canada
is
to
reduce
missing or dama-
fi-
Warning!
In
ordertoreduce the risk of fire, do not
modify or remove any part of the muffler
or spark arrestor.
Keep cutting tool sharp. Tighten all nuts,
bolts and screws except the carburetor
adjustment screws after each use.
Keep spark plug and wire connection
tight and clean. The spark plug electrode
gap should be checked with a feeler
gauge at least every 50 operating hours
and reset
plug
Store brushcutter
location place and out of reach of
children.
Before storing for longer than a few
days, always empty the fuel tank.
if
necessary. Fit a new spark
if
the electrodes are badly pilled.
in
a dry, high or locked
Warnlngl
Keep hands and feet away from cUlling
tool.
17
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