STIHL KM 85 Owner's Manual
STIHL KM 85
STIH)
Instruction Manual
Manual de instrucciones
Warning!
For safe operation follow all safety
precautions in Instruction Manual - improper
use can cause serious injury.
Advertencia!
Para su seguridad durante el manejo de este
producto, siga siempre las precauciones de
seguridad dadas en el manual de
instrucciones - el uso indebido puede causar
lesiones graves.
Contents
CombiSystem ................................... 2
Guide to Using this Manual .............. 3
Safety Precautions and
Working Techniques ......................... 4
Approved CombiTools .................... 11
Mounting the Bike Handle .............. 11
Adjusting the Throttle Cable ........... 13
Mounting the Loop Handle ............. 13
Fuel ................................................ 15
Printing inks contain vegetable oils;
paper can be recycled.
Fueling ............................................ 16
Starting / Stopping
the Engine ...................................... 17
Operating Instructions .................... 20
Cleaning the Air Filter ..................... 20
Spark Arresting Screen*
in Muffler ......................................... 21
Motor Management ........................ 21
Adjusting the Carburetor ................ 21
Checking the Spark Plug ................ 23
Replacing the Starter Rope
and Rewind Spring ......................... 24
Storing the Machine ........................ 27
Maintenance Chart ......................... 28
Main Parts and Controls ................. 29
Printed on chlorine-free paper.© 2002 Andreas Stihl AG & Co., Waiblingen
Specifications ................................. 31
Special Accessories ....................... 32
Maintenance and Repairs ............... 32
STIHL Incorporated Federal
and California Emission Control
Warranty Statement ........................ 33
english / USA
Allow only persons who understand the
manuals of the CombiEngine and the
CombiTool to operate your power tool.
To receive maximum performance and
satisfaction from your STIHL power tool,
it is important that you read and
understand the maintenance and safety
precautions, starting on page 4, before
using your power tool.
Contact your STIHL dealer or the STIHL
distributor for your area if you do not
understand any of the instructions in the
two manuals.
* see “Guide to Using this Manual”
STIHl
0458 462 8621. M3. K2. PM. Printed in USA
1KM 85, KM 85 R
english / USA
CombiSystem
!Warning!
Because this power tool is a high-speed
working tool, some special safety
precautions must be observed to reduce
the risk of personal injury. Careless or
improper use may cause serious or even
fatal injury.
STIHL's philosophy is to continually
improve all of its products. As a result,
engineering changes and improvements are made from time to time.
Therefore, STIHL cannot be responsible
for changes, modifications or
improvements not covered in this
manual. If the operating characteristics
or the appearance of your power tool
differs from those described in the two
manuals, please contact your STIHL
dealer for information and assistance.
+
.
.
.
.
+
In the STIHL CombiSystem™ a number
of different CombiEngines and
CombiTools can be combined to
produce a power tool. In this instruction
manual the functional unit formed by the
CombiEngine™ and CombiTool™ is
referred to as the power tool.
The CombiEngine and CombiTool come
with separate instruction manuals.
Always read and make sure you
understand both instruction manuals
before starting and using your machine.
Keep the manuals in a safe place for
later reference.
On brushcutters with a split boom
(T models), the CombiTool can be
used in place of any power tool
attachment.
002BA159 KN
2
KM 85, KM 85 R
Guide to Using this Manual
english / USA
Pictograms
All the pictograms attached to the
machine are shown and explained in
this manual.
The operating and handling instructions
are supported by illustrations.
Symbols in text
The individual steps or procedures
described in the manual may be marked
in different ways:
: Step or procedure without direct
reference to an illustration.
Description of step or procedure that
refers directly to the illustration and
contains item numbers that appear in
the illustration.
Example:
Loosen the screw (1)
Lever (2) ...
In addition to the operating instructions,
this manual may contain paragraphs
that require your special attention. Such
paragraphs are marked with the
symbols described below:
Warning where there is a risk of an
accident or personal injury or
serious damage to property.
Warning where there is a risk of
damaging the machine or individual
components.
Note or hint which is not essential
for using the machine, but may
improve the operator’s understanding of the situation and result
in better use of the machine.
Note or hint on correct procedure in
order to avoid damage to the
environment.
Equipment and features
This instruction manual refers to
several models with different
features. Components that are not
installed in all models and related
applications are marked thus
Such components are available as
special accessories from your
STIHL dealer.
*.
Engineering improvements
STIHL’s philosophy is to continually
improve all of its products. As a result,
engineering changes and improvements
are made from time to time. If the
operating characteristics or the
appearance of your machine differ from
those described in this manual, please
contact your STIHL dealer for
assistance.
Therefore, we cannot be responsible for
changes, modifications or
improvements not covered in this
manual.
3KM 85, KM 85 R
english / USA
Safety Precautions and Working Techniques
Warning!
Because this
CombiEngine is the
engine for a high-speed,
power tool, special safety
precautions must be
observed to reduce the
risk of personal injury.
It is important that you
read, fully understand and
observe the following
safety precautions and
warnings. Read the
owner's manuals and the
safety instructions of your CombiEngine
and CombiTool periodically. Careless or
improper use of any power tool may
cause serious or fatal injury.
Have your STIHL dealer show you how
to operate your power tool. Observe all
applicable local safety regulations,
standards and ordinances.
!Warning!
Do not lend or rent your power tool
without the owner's manuals. Be sure
that anyone using your power tool
understands the information contained
in these manuals.
!Warning!
Minors should never be allowed to use a
power tool. Bystanders, especially
children, and animals should not be
allowed in the area where a power tool is
in use.
Never let the power tool run unattended.
Most of these safety precautions and
warnings apply to the use of all STIHL
power tools. Different models may have
different parts and controls. See the
appropriate section of your owner's
manual for a description of the controls
and function of the parts of your power
tool model.
Safe use of a power tool involves
1. the operator
2. the power tool
3. the use of the power tool.
THE OPERATOR!
Physical Condition
You must be in good physical condition
and mental health and not under the
influence of any substance (drugs,
alcohol, etc.) which might impair vision,
dexterity or judgement. Do not operate a
power tool when you are fatigued.
Be alert - if you get tired while operating
your power tool, take a break. Tiredness
may result in loss of control. Working
with any power tool can be strenuous. If
you have any condition that might be
aggravated by strenuous work, check
with your doctor before operating a
power tool.
!Warning!
The ignition system of the STIHL unit
produces an electromagnetic field of a
very low intensity. This field may
interfere with some pacemakers. To
reduce the risk of serious or fatal injury,
persons with a pacemaker should
consult their physician and the
pacemaker manufacturer before
operating this tool.
4
KM 85, KM 85 R
english / USA
Proper Clothing
!Warning!
To reduce the risk of injury, the operator
should wear proper protective apparel.
!Warning!
To reduce the risk of injury
to your eyes never
operate a power tool
unless wearing goggles or
properly fitted safety
glasses with adequate top
and side protection complying with ANSI
Z 87.1 (or your applicable national
standard).
!Warning!
CombiEngine 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.
For further instructions on proper
clothing see the Safety Instructions in
the owner’s manual of the CombiTool.
THE POWER TOOL
For illustrations and definitions of the
power tool parts see the chapter on
"Parts and Controls".
!Warning!
Never modify a power tool in any way.
Only CombiTools supplied by STIHL or
expressly approved by STIHL for use
with the specific STIHL CombiEngine
models are authorized. Although certain
unauthorized attachments may be
useable on the STIHL CombiEngine,
their use may, in fact, be extremely
dangerous.
THE USE OF THE POWER TOOL
Transporting the power tool
!Warning!
Always turn off the engine and make
sure the working tool has stopped before
putting a power tool down. When
transporting your power tool in a vehicle,
properly secure it to prevent turnover,
fuel spillage and damage to the power
tool.
Preparation for the use of the power
tool
Always check your power tool for proper
condition and operation before starting,
particularly the throttle trigger, throttle
trigger interlock (if applicable), stop
switch, working tool, deflector and
harness.
The throttle trigger must move freely and
always spring back to the idle position.
The working tool must be properly
tightened and in safe operating
condition. Inspect for loose parts (nuts,
screws, etc.) and for cracked, bent,
warped or damaged working tools.
5KM 85, KM 85 R
english / USA
Fueling
Your STIHL power tool uses an oilgasoline mixture for fuel (see the
chapter on „Fuel“ of your owner’s
manual).
!Warning!
Gasoline is an extremely
flammable fuel. If spilled
and 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, flame,
spark or any other ignition source near
the fuel or power tool.
Fueling Instructions
!Warning!
Fuel your power tool in well-ventilated
areas, outdoors. Always shut off the
engine and allow it to cool before
refueling. Gasoline vapor pressure may
build up inside the fuel tank depending
on the fuel used, the weather conditions
and the tank venting system.
In order to reduce the risk of burns and
other personal injury from escaping gas
vapor and fumes, remove the fuel filler
cap on your power tool carefully so as to
allow any pressure build-up in the tank
to release slowly. Never remove fuel
filler cap while engine is running.
!Warning!
To reduce the risk of fire or burn injury,
let the unit cool down before refueling
your power tool after use.
Select bare 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
power tool and check for leakage.
!Warning!
Check for fuel leakage while refueling
and during operation. If fuel or oil
leakage is found, do not start or run the
engine until leak is fixed and spilled fuel
has been wiped away. Take care not to
get fuel on your clothing. If this happens,
change your clothing immediately.
Different models may be equipped with
different fuel caps.
Cap with Grip
!Warning!
In order to reduce the risk of fuel spillage
and fire from an improperly tightened
fuel cap, correctly position and tighten
the fuel cap in the fuel tank opening.
To do this with this STIHL
cap, raise the grip on the
top of the cap until it is
upright at a 90° angle.
Insert the cap in the fuel
tank opening with the
triangular marks on the grip of the cap
and on the fuel tank opening lining up.
Using the grip, turn the cap firmly
clockwise as far as it will go (approx. a
quarter turn).
Fold the grip flush with the
top of the cap. If the grip
does not lie completely
flush with the cap and the
detent on the grip does
not fit in the
corresponding recess in the filler neck,
the cap is not properly seated and
tightened and you must repeat the
above steps.
6
KM 85, KM 85 R
english / USA
Screw Cap
!Warning!
Unit vibrations can cause
an improperly tightened
fuel filler cap to loosen or
come off and spill
quantities of fuel. In order
to reduce the risk of fuel
spillage and fire, tighten the fuel filler cap
by hand with as much force as possible.
Operating instructions
! Warning!
Improper use of any power tool can
cause serious or fatal personal injury. To
reduce the risk of personal injury to the
operator from operating the power tool
always follow the safety instructions on
operating the power tool as provided in
the owner’s manuals of the
CombiEngine and the CombiTool.
Starting
!Warning!
Your power tool is a one-person
machine. To reduce the risk of injury,
keep bystanders out of your working
area (see CombiTool manuals for
specific distances).
Stop the engine and cutting tool
immediately if you are approached. Start
and operate your power tool without
assistance. For specific starting
instructions, see the appropriate section
of your manuals. Place the power tool on
firm ground or other solid surface in an
open area. Maintain a good balance and
secure footing.
!Warning!
To reduce the risk of injury from loss of
control, be absolutely sure that the
working 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 be
fast enough for the clutch to engage and
move the working tool.
!Warning!
When you pull the starter grip, don't
wrap the starter rope around your hand.
Do not allow the grip to snap back, but
guide the starter rope to rewind it
properly. Failure to follow this procedure
may result in injury to hand or fingers
and may damage the starter
mechanism.
See also the Safety Instructions on
Starting in the owner’s manual of the
CombiTool.
Muffler
!Warning!
Do not operate your power tool if the
muffler is damaged, missing or modified.
Such a muffler could cause an increase
in heat radiation or sparks, thereby
increasing the risk of fire or burn injury.
You may also permanent damage the
engine.
!Warning!
The muffler and other parts of the engine
(e.g. fins of the cylinder, spark plug)
become hot during operation and remain
hot for a while after stopping the engine.
To reduce risk of burns do not touch the
muffler and other parts while they are
hot.
!Warning!
To reduce the risk of fire or burn injury,
keep the area around the muffler clean.
Remove all debris such as pine needles,
branches or leaves when the engine is
off and cooled.
7KM 85, KM 85 R
english / USA
Catalytic converter
!Warning!
Some STIHL power tool
models are equipped with
a catalytic converter,
which is designed to
reduce the exhaust
emissions of the engine
by a chemical process in the muffler.
Due to this process, the muffler does not
cool down as rapidly as conventional
mufflers when the engine returns to idle
or is shut off. To reduce the risk of fire
and burn injuries, the following specific
safety precautions must be observed.
!Warning!
Since a muffler with a catalytic converter
cools down less rapidly than conventional mufflers, never set your power tool
down where the muffler is near dry
brush, grass, wood chips or other
combustible materials while it is still hot.
Let the engine cool down sitting in the
upright position on concrete, metal, bare
ground or solid wood away from any
combustible substances.
!Warning!
An improperly mounted or damaged
cylinder housing or a damaged/
deformed muffler shell may interfere
with the cooling effect of the catalytic
converter. To reduce the risk of fire or
burn injury, do not continue working with
a damaged or improperly mounted
cylinder housing or a damaged/
deformed muffler shell. Your catalytic
converter is furnished with screens
designed to reduce the risk of fire from
the emission of hot particles. Due to the
heat from the catalytic reaction, these
screens will normally stay clean and
need no service or maintenance. If you
experience loss of performance and you
suspect a clogged screen, have your
muffler maintained by a STIHL Servicing
Dealer.
Working Conditions
Operate and start your power tool only
outdoors in a ventilated area.
Operate the power tool under good
visibility and daylight conditions only.
Work carefully.
!Warning!
Your power tool produces
toxic exhaust fumes as
soon as the engine is
running. These gases
(e.g. carbon monoxide)
may be colorless and
odorless. To reduce the risk of serious or
fatal injury from inhaling toxic fumes,
never run the power tool indoors or in
poorly ventilated locations.
!Warning!
Use of this product can generate dust
and fumes containing chemicals known
to cause respiratory disease, cancer,
birth defects, or other reproductive
harm. If you are unfamiliar with the risks
associated with the particular dust or
fume at issue, consult your employer,
governmental agencies such as OSHA
and NIOSH and other sources on
hazardous materials. The State of
California and some other authorities,
for instance, have published lists of
substances known to cause cancer,
reproductive toxicity, etc.
8
KM 85, KM 85 R
english / USA
Control dust and fumes at the source
where possible. In this regard use good
work practices and follow the
recommendations of OSHA/NIOSH and
occupational and trade associations.
When the inhalation of toxic dust and
fumes cannot be eliminated, the
operator and any bystanders should
always wear a respirator approved by
NIOSH/MSHA for the type of dust and /
or fumes encountered.
Important adjustments
!Warning!
To reduce the risk of personal injury from
loss of control or contact with the
running working tool, do not use a power
tool with incorrect idle adjustment. At
correct idle speed, the working tool
should not move. For directions on how
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 power
tool and make proper adjustments and
repairs.
MAINTENANCE, REPAIR AND
STORING
Maintenance, replacement, or repair
of the emission control devices and
systems may be performed by any
nonroad engine repair establishment
or individual. However, if you claim
warranty coverage for a component
which has not been serviced or
maintained properly or if
nonapproved replacement parts were
used, STIHL may deny warranty
coverage.
!Warning!
Use only identical STIHL replacement
parts for maintenance and repair. Use of
non-STIHL parts may increase the risk
of serious or fatal injury.
Follow the maintenance and repair
instructions in the appropriate section of
your owner's manual. Please refer to the
maintenance chart on the last pages of
this manual.
!Warning!
Always stop the engine and make sure
that the cutting tool is stopped before
doing any maintenance or repair work or
cleaning the power tool. Do not attempt
any maintenance or repair work not
described in your owner's manual. Have
such work performed at your STIHL
service shop only.
Wear gloves when handling or
performing maintenance on blade.
!Warning!
Never repair damaged cutting attachments by welding, straightening or
modifying the shape. This may cause
parts of the cutting tool to come off and
result in serious or fatal injuries.
9KM 85, KM 85 R
english / USA
!Warning!
To reduce the risk of fire and burn
injuries, check the fuel filler cap for leaks
at regular intervals. Use the specified
spark plug and make sure it and the
ignition lead are always clean and in
good condition. Always press spark plug
boot snugly onto spark plug boot of the
proper size. (Note: If boot has
detachable SAE adapter nut, it must be
attached.) A loose connection between
spark plug boot and ignition wire
connector in the boot may create arcing
that could ignite combustible fumes and
cause a fire.
!Warning!
Never test the ignition system with
ignition wire boot removed from the
spark plug or with a removed spark plug,
since uncontained sparking may cause
a fire.
!Warning!
A damaged or improperly maintained
muffler will increase the risk of fire and
hearing loss. Never touch a hot muffler
or burn will result. If your muffler was
equipped with a spark-arresting screen
to reduce the risk of fire (e.g. in the USA,
Canada and Australia), never operate
your CombiEngine if the screen is
missing or damaged. Do not
disassemble, modify or remove any part
of the muffler or spark arresting screen.
Remember that the risk of forest fires is
greater in hot or dry weather. Have your
muffler serviced and repaired by your
STIHL Servicing Dealer only.
Keep the cutting attachment sharp.
Tighten all nuts, bolts and screws,
except the carburetor adjustment
screws, after each use.
Additionally, the daily maintenance
schedule for your power tool set forth in
your STIHL Owner's Manual should be
strictly followed.
For any maintenance please refer to the
maintenance chart and to the warranty
statement near the end of this manual.
Store the power tool in a dry, high or
locked location out of reach of children.
Before storing for longer than a few
days, always empty the fuel tank. See
chapter “Storing the machine“.
10
KM 85, KM 85 R
english / USA
Approved CombiTools
FS
HL-0/90°
HT
FCB
FS
HL-0°
FH
BC
FCS
The following STIHL CombiTools may
be mounted on the CombiEngine:
CombiTool Purpose
1)
FS
1) 2)
FS
2) 3)
FH
HL - 0°
HL - 0/90°
HT
BC
FCB, FCS
KW
1)
2)
3)
3)
2) 3)
3)
2) 3)
3)
3)
Always observe chapter "Approved
Combinations of Cutting Tool,
Deflector, Handle and Harness" in
FS CombiTool instruction manual
Barrier bar must be mounted on
loop handle
Unsuitable or not approved for
CombiEngines with bike handle
Brushcutter with
mowing head
Brushcutter with
grass cutting bladet
Power scythe
Hedge cutter
Hedge cutter
Pole pruner
Cultivator
Power edger
PowerSweep
Mounting the Bike Handle
6
6
5
1
4
3
A
2
: Mount the bike handle (1) on the
drive tube (2) about 16” (40 cm) (A)
forward of the engine.
: Place the clamp (3) and the handle
support (4) on the drive tube.
: Position the bike handle (1) on the
handle support - the rubber grip
must be on the left (viewed from the
engine)
002BA128 KN
KW
932BA001 KN
11KM 85, KM 85 R
english / USA
: Place the clamp (5) on the handle
support.
: Insert screws (6) in the holes and
clamp (3) and tighten them
moderately.
: Line up the bike handle.
: Tighten down the screws firmly.
11
13
14
10
7
9
8
12
1
12
Fitting the control handle
: Release the screw (7) and remove it
with the washer (8). The nut (9)
remains in the control handle (10).
: Push the control handle onto the
bike handle (1) - the throttle trigger
(11) must point towards the
gearhead.
: Line up the holes (12).
: Fit screw and washer in control
handle and tighten down firmly.
14
13
14
002BA129 KN
Fitting the throttle cable
Do not kink the throttle cable - make
sure the throttle trigger moves freely.
: Press the throttle cable (13) into the
retainers (14).
393BA005 KN
12
KM 85, KM 85 R
english / USA
Adjusting the Throttle Cable
Control Handle1) with Slide*
: On the control handle, check that
the slide (arrow) in the slot below
the throttle trigger interlock is at the
bottom of the slot.
P
O
T
S
2
1
002BA162 KN002BA163 KN
: Press down the trigger interlock (1)
and squeeze the throttle trigger (2)
(full throttle) – this sets the throttle
cable correctly.
Mounting the Loop Handle
249BA017 KN
Loop handle with barrier bar
: Insert square nuts (1) in the
002BA160 KN
barrier bar (2).
: Line up the holes.
2
1
1
002BA098 KN
If the slide is not at the end of the slot:
: Use a screwdriver to push the slide
to the bottom of the slot (see
illustration).
1)
On bike-handled versions only
* see "Guide to Using this Manual"
This setting procedure causes the slide
to move away from the end of the slot.
13KM 85, KM 85 R
english / USA
8
4
2
8
7
7
4
A
9
3
3
10
5
5
4
6
7
: Place the clamp (3) in the loop
handle (4) and position them both
against the drive tube (5).
: Fit the clamp (6) and place the
barrier bar (2) in position.
Note correct position.
: Line up the holes.
: Insert screws (7) in holes and screw
them into the barrier bar as far as
stop.
: Go to “Securing the loop handle”.
14
6
1
002BA099 KN
Loop handle without barrier bar
: Place the clamp (3) in the loop
handle (4) and position them both
against the drive tube (5).
: Fit the clamp (6) and line up the
holes.
: Fit washers (7) on screws (8).
: Insert screws (8) in holes and screw
on the square nuts (1) as far as
stop.
: Go to “Securing the loop handle”.
1
002BA136 KN
Securing the loop handle
: Secure the loop handle (4)
approx. 8”/20cm (A) forward of
the control handle (9).
: Line up the loop handle.
: Tighten down the screws firmly -
lock the nuts if necessary.
10 Sleeve*
* see “Guide to Using this Manual”
KM 85, KM 85 R
002BA147 KN
Fuel
english / USA
This engine is certified to operate on
unleaded gasoline and with the mix
ratio 50:1.
Your two-stroke engine requires a
mixture of brand-name gasoline and
quality two-stroke engine oil with the
classification TC.
Use regular branded unleaded gasoline
with a minimum octane rating of 89
RON. If the octane rating of the regular
grade gasoline in your area is lower use
premium unleaded fuel.
Note: Units with a catalytic converter
require unleaded gasoline. The
efficiency of the catalytic converter can
drop more than 50 % if several tankfuls
of leaded gasoline are used.
Fuel with a lower octane rating may
result in preignition (causing "pinging")
which is accompanied by an increase in
engine temperature. This, in turn,
increases the risk of the piston seizure
and damage to the engine.
The chemical composition of the fuel is
also important. Some fuel additives not
only detrimentally affect elastomers
(carburetor diaphragms, oil seals, fuel
lines etc.), but magnesium castings as
well. This could cause running problems
or even damage the engine. For this
reason it is essential that you use only
name branded fuels!
Use only STIHL two-stroke engine oil or
equivalent branded two-stroke aircooled engine oils with the classification
TC for mixing.
We recommend STIHL 50:1 two-stroke
engine oil since it is specially formulated
for use in STlHL engines.
Do not use BIA or TCW (two-stroke
water cooled) mix oils.
Use only STIHL 50:1 heavy-duty
engine oil or equivalent quality two
stroke engine oils for the fuel mix in
models with a catalytic converter.
Take care when handling gasoline.
Avoid direct contact with the skin and
avoid inhaling fuel vapour.
The canister should be kept tightly
closed in order to avoid any moisture
getting into the mixture.
The fuel tank and the canister in which
fuel mix is stored should be cleaned
from time to time.
Fuel mix ages
Only mix sufficient fuel for a few days
work, not to exceed 3 months of storage.
Store in approved safety fuel-canisters
only. When mixing, pour oil into the
canister first, and then add gasoline.
Gasoline
US gal. US fl.oz
12.6
2 1/2 6.4
512.8
Dispose empty mixing-oil canisters only
at authorized disposal locations.
Oil (STIHL 50:1 or
equivalent branded TC oils)
15KM 85, KM 85 R
english / USA
Fueling
Before fueling, clean the filler cap and
the area around it to ensure that no dirt
falls into the tank.
Always thoroughly shake the mixture in
the canister before fueling your
machine.
In order to reduce the risk of burns
or other personal injury from
escaping gas vapor and fumes,
remove the fuel filler cap carefully
so as to allow any pressure build-up
in the tank to release slowly.
After fueling, tighten fuel cap as
securely as possible by hand.
16
389BA031 KN
Change the fuel pick up body every
year.
Before storing your machine for a long
period, drain and clean the fuel tank and
run engine until carburetor is dry.
389BA032 KN
KM 85, KM 85 R
Starting / Stopping the Engine
english / USA
6
45
3
P
7
STO
2
1
Controls
KM 85
Throttle trigger interlock (1), throttle
trigger (2) and slide control (3) with the
positions:
START (4)
The normal run position # (5)
and
STOP–O (6) – to stop engine, move
slide control in direction of c(7).
4
6
5
7
002BA167 KN
KM 85 R
Throttle trigger interlock (1), throttle
trigger (2) and slide control (3) with the
positions:
START (4)
The normal run position # (5)
and
STOP–O (6) – to stop engine, move
slide control in direction of c(7).
STOP
3
3
1
2
002BA168 KN
Starting
: Hold down the trigger interlock and
squeeze the throttle trigger.
: Keep both levers in that position.
: Move the slide control to START
position and hold it there.
: Now release the throttle trigger,
slide control and trigger interlock in
that order. This is the
starting-throttle position.
17KM 85, KM 85 R
english / USA
8
8
393BA017 KN
002BA038 KN002BA040 KN
9
393BA018 KN
357BA033 KN
: Set the choke lever (8):
For cold start to
gggg
For warm start to eeee
even if engine has been running but
is still cold
: Press the fuel pump bulb (9) at least
five times, even if the bulb is still
filled with fuel.
18
: Place the unit on the ground:
It must rest securely on the engine
support. Check that the tool is not
touching the ground or any other
obstacles – see also chapter
"Starting/Stopping the Engine" in
the CombiTool’s instruction manual.
: Make sure you have a firm footing.
: Press the unit firmly against the
ground with your left hand on the fan
housing. Your thumb should be
under the fan housing.
Do not stand or kneel on the drive
tube!
: Pull the starter grip slowly with your
right hand until you feel it engage –
and then give it a brisk strong pull.
Do not pull out starter rope to full
length – it might break.
: Do not let the starter grip snap back
– guide it slowly into the housing so
that the starter rope can rewind
properly.
: Crank the engine until it runs.
KM 85, KM 85 R
english / USA
When engine begins to fire
: Set the choke lever to e and
continue cranking.
As soon as engine runs
: Blip the throttle trigger so that the
slide control moves to the normal
run position # and the engine settles
down to idle speed.
Make sure the carburetor is
correctly adjusted – the tool must
not move when the engine is idling.
Your machine is now ready for
operation.
To shut down the engine:
: Move the slide control in direction of
arrow (c) to STOP-O.
At very low outside temperatures
As soon as engine runs:
: Blip the throttle trigger to disengage
the starting throttle position. The
slide control moves to the normal
run position # and the engine settles
down to idle speed.
: Open the throttle slightly.
: Warm up engine for brief period.
10
If the engine does not start
If you did not turn the choke knob to e
quickly enough after the engine began to
fire, the combustion chamber has
flooded.
: Turn choke knob to e
: Set slide control, interlock lever and
throttle trigger to starting throttle
position.
: Start the engine by pulling the
starter rope firmly. 10 to 20 pulls
may be necessary.
If the engine still does not start
: Move the slide control in direction of
arrow (c) to STOP-O.
: Remove the spark plug boot (10).
: Unscrew and dry off the spark plug.
: Open the throttle wide.
: Crank the engine several times with
the starter to clear the combustion
chamber.
: Refit the spark plug. Connect the
spark plug boot (press it down
firmly).
: Move slide control to START.
: Set the choke lever to e, even if the
393BA019 KN
engine is cold.
: Now start the engine.
Fuel tank run until dry
: After refueling, press the fuel pump
bulb at least five times – even if bulb
is filled with fuel.
: Set the choke lever according to
engine temperature.
: Now start the engine.
19KM 85, KM 85 R
english / USA
Operating Instructions Cleaning the Air Filter
During break-in period
A factory new machine should not be run
at high revs (full throttle off load) for the
first three tank fillings. This avoids
unnecessary high loads during the
break-in period.
As all moving parts have to bed in during
the break-in period, the frictional
resistances in the engine are greater
during this period. The engine develops
its maximum power after about 5 to 15
tank fillings.
During operation
After a long period of full-throttle
operation, allow engine to run for a while
at idle speed so that the heat in the
engine can be dissipated by flow of
cooling air. This protects enginemounted components (ignition,
carburetor) from thermal overload.
After finishing work
Wait for engine to cool down. Drain the
fuel tank. Store the machine in a dry
place. Check tightness of nuts and
screws (not adjusting screws) at regular
intervals and retighten as necessary.
Dirty air filters reduce engine power
increase fuel consumption and make
starting more difficult.
If there is a noticeable loss of engine
power
: Move choke lever to g.
: Press in the tab (1).
: Ease the filter cover (2) over the tab
and take it away.
: Clean away loose dirt from around
the filter.
: Remove the foam and felt filter
elements.
1
2
3
2
355BA014 KN
4
: Wash the foam element in a clean,
non-flammable cleaning solution
(e.g. warm soapy water) and then
dry.
: Fit new felt element.
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.
Replace damaged parts!
: Install the foam element (3) in the
filter cover (2).
: Place felt element (4) (lettering
facing inward) in filter housing (5).
: Fit filter cover so that it snaps into
position.
5
355BA031 KN
355BA032 KN
20
KM 85, KM 85 R
english / USA
Spark Arresting Screen* in Muffler
If the engine is low on power, check the
spark arresting screen in the muffler.
: Lift spark arresting screen and pull it
out sideways.
: Clean spark arresting screen if
necessary.
: If screen is damaged or coked up, fit
a new one.
: Refit the spark arresting screen.
Motor Management Adjusting the Carburetor
Exhaust emissions are controlled by the
design of the fundamental engine
parameters and components (e.g.
carburation, ignition, timing and valve or
port timing) without the addition of any
major hardware.
392BA035 KN
The carburetor comes from the factory
with a standard setting.
This setting provides an optimum fuel-air
mixture under most operating
conditions.
With this carburetor it is only possible to
adjust the high speed screw within fine
limits.
HL
3 / 4
1
LA
265BA024 KN
* see “Guide to Using this Manual”
21KM 85, KM 85 R
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