STIHL SR 450, SR 430 Owner's Manual
STIHL SR 430, 450
{
Instruction Manual
Manual de instrucciones
Warning!
Read and follow all safety precautions in
Instruction Manual – improper use can cause
serious or fatal injury.
Advertencia!
Lea y siga todas las precauciones de
seguridad dadas en el manual de
instrucciones – el uso incorrecto puede
causar lesiones graves o mortales.
Instruction Manual
1 - 46
Manual de
instrucciones
47 - 96
Contents
English
Guide to Using this Manual 2
Safety Precautions and Working
Techniques 2
Assembling the Unit 12
Adjusting the Throttle Cable 14
Harness 15
Fuel 15
Fueling 16
Original Instruction ManualPrinted on chlorine-free paper
Information Before You Start 17
Starting / Stopping the Engine 18
Operating Instructions 20
Metering Unit 20
Dusting and Spreading Mode 23
Calculating Required Quantity of
Solution 25
Filling the Container 26
Working 27
After Finishing Work 28
Storing the Machine 29
Engine Management 29
Replacing the Air Filter 30
Adjusting the Carburetor 30
Printing inks contain vegetable oils, paper can be recycled.
Spark Plug 31
Engine Running Behavior 32
Replacing the Starter Rope and
Rewind Spring 33
Inspections and Maintenance by
Dealer 35
Maintenance and Care 36
Main Parts 38
Specifications 40
Special Accessories 41
Maintenance and Repairs 41
STIHL Incorporated Federal
Emission Control Warranty
Statement 41
STIHL Incorporated California
Exhaust and Evaporative
Emissions Control Warranty
Statement 43
Trademarks 45
Allow only persons who fully understand
this manual to operate your mistblower.
To receive maximum performance and
satisfaction from your STIHL
mistblower, it is important that you read
and understand and follow the
maintenance and safety precautions in
chapter "Safety Precautions and
Working Techniques" before using your
mistblower. For further information you
can go to www.stihlusa.com.
Contact your STIHL dealer or the STIHL
distributor for your area if you do not
understand any of the instructions in this
manual.
Warning!
Because a mistblower is a power tool for
spraying chemicals, some special safety
precautions must be observed as with
any other power tool to reduce the risk of
personal injury. Careless or improper
use may cause serious or even fatal
injury.
{
© ANDREAS STIHL AG & Co. KG, 2010
0458-454-8621-B. M1.A10.MET.
0000002257_002_GB
SR 430, SR 450
1
English
Guide to Using this Manual
Pictograms
All the pictograms attached to the
machine are shown and explained in this
manual.
Symbols in Text
Many operating and safety instructions
are supported by illustrations.
The individual steps or procedures
described in the manual may be marked
in different ways:
N A bullet marks a step or procedure
without direct reference to an
illustration.
A description of a step or procedure that
refers directly to an illustration may
contain item numbers that appear in the
illustration. Example:
N Loosen the screw (1).
N 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 and signal words described
below:
Danger!
Indicates an imminent risk of severe or
fatal injury.
Warning!
Indicates a hazardous situation which, if
not avoided, could result in severe or
fatal injury.
Caution!
Indicates a risk of property damage,
including damage to the machine or its
individual components.
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. Therefore,
some changes, modifications and
improvements may not be covered in
this manual. If the operating
characteristics or the appearance of
your machine differ from those
described in this manual, please contact
your STIHL dealer for assistance.
Safety Precautions and
Working Techniques
Because the mistblower
is a power tool for spraying chemicals, 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
general safety precautions and warnings. Read
the instruction manual
and the safety precautions periodically. In
addition, read and follow
the chemical manufacturer’s instructions for the
chemical products being
applied. Since such products may vary greatly in
handling/application
requirements and risks,
the product label is normally your best guide for
safe and effective use.
Use your power tool for spraying
chemicals and other liquids to control
pests and weeds in fruit, flower and
vegetable gardens, on trees and bushes
and on other plants, such as coffee,
tobacco and cotton. It is also useful in
the maintenance of young trees for, e.g.,
controlling the bark beetle and other
pests and plant diseases.
Only use plant protection products that
are specifically approved for use in
sprayers/mistblowers by their
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SR 430, SR 450
manufacturer and that meet all
applicable safety regulations, standards
and ordinances.
Warning!
Do not use it for other purposes, since
misuse may result in personal injury or
property damage, including damage to
the machine.
Have your STIHL dealer show you how
to operate your power tool. Observe all
applicable local safety regulations,
standards and ordinances.
All operating and servicing personnel
should be trained and familiarized with
the proper handling procedures for the
chemical products being used, as well
as with first aid/emergency care, and
liquid and dry chemical disposal
regulations.
Warning!
Your power tool is for professional use
only. Do not lend or rent your power tool
without the instruction manual. Be sure
that anyone using it understands the
information contained in this instruction
manual.
Warning!
Minors should never be allowed to use
this power tool. Bystanders, especially
children, and animals should not be
allowed in the area where it is in use.
Warning!
To reduce the risk of injury to bystanders and damage to property, never let
your power tool run unattended. When it
is not in use (e.g. during a work break),
shut it off and make sure that unauthorized persons do not use it.
Most of these safety precautions and
warnings apply to the use of all STIHL
mistblowers. Different models may have
different parts and controls. See the
appropriate section in this instruction
manual for a description of the controls
and the function of the parts of your
model.
Safe use of a mistblower involves
1. the operator
2. the power tool
3. the handling of the chemicals to be
sprayed.
4. 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 judgment. Do not operate
this machine when you are fatigued.
English
Warning!
Be alert – if you get tired, 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 this machine.
Warning!
Prolonged use of a power tool (or other
machines) exposing the operator to
vibrations may produce whitefinger disease (Raynaud's phenomenon) or
carpal tunnel syndrome.
These conditions reduce the hand's
ability to feel and regulate temperature,
produce numbness and burning
sensations and may cause nerve and
circulation damage and tissue necrosis.
All factors which contribute to
whitefinger disease are not known, but
cold weather, smoking and diseases or
physical conditions that affect blood
vessels and blood transport, as well as
high vibration levels and long periods of
exposure to vibration are mentioned as
factors in the development of whitefinger
disease. In order to reduce the risk of
whitefinger disease and carpal tunnel
syndrome, please note the following:
Most STIHL power tools are available
with an anti-vibration ("AV") system
designed to reduce the transmission of
vibrations created by the machine to the
operator's hands. An AV system is
recommended for those persons using
power tools on a regular or sustained
basis.
SR 430, SR 450
3
English
– Wear gloves and keep your hands
warm.
– Keep the AV system well
maintained. A power tool with loose
components or with damaged or
worn AV elements will tend to have
higher vibration levels.
– Maintain a firm grip at all times, but
do not squeeze the handles with
constant, excessive pressure. Take
frequent breaks.
All the above-mentioned precautions do
not guarantee that you will not sustain
whitefinger disease or carpal tunnel
syndrome. Therefore, continual and
regular users should closely monitor the
condition of their hands and fingers. If
any of the above symptoms appear,
seek medical advice immediately.
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.
Proper Clothing
Warning!
To reduce the risk of injury when working with chemical agents, the operator
should wear proper protective apparel
when filling, using and cleaning the
power tool. Always follow all of the
chemical manufacturer’s instructions
with respect to proper eye, skin and respiratory protection. They may differ from
and exceed the following precautions.
Warning!
To reduce the risk of
injury to your eyes
never operate your
power tool unless wearing goggles or properly
fitted protective glasses
with adequate top and side protection
complying with ANSI Z 87.1.
Power tool 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.
Be particularly alert and cautious when
wearing hearing protection because
your ability to hear warnings (shouts,
alarms, etc.) is restricted.
When working with toxic chemicals, the
operator and any bystanders may need
to wear a properly fitted respirator
approved by NIOSH/MSHA for the
chemical being used. Consult the product label. Breathing toxic chemicals can
cause serious or fatal injury.
Always wear rubber/chemical-resistent
gloves when handling
this power tool.
For some chemicals it is
advisable to wear impermeable coveralls or an
impermeable work apron.
Check the product label.
If you are spraying overhead or if the spray may
reach head height, wear
a wide brim hat or other
suitable head covering.
Do not wear shorts, sandals or go barefoot.
Wear rubber/chemicalresistent boots.
Avoid loose-fitting jackets, scarfs, neckties,
jewelry, flared or cuffed
pants, unconfined long
hair or anything that
could become caught on
branches, brush or the
moving parts of the unit.
Secure hair so it is above
shoulder level.
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SR 430, SR 450
Warning!
In limited circumstances, mistblowers
may also be used in greenhouses that
are very well-ventilated if the operator
can protect himself or herself from any
harmful effects through the use of
proper eye, skin and respiratory protection. Such work may require special
precautions, and must not be prohibited
on the chemical product label.
THE POWER TOOL
For illustrations and definitions of the
power tool parts see the chapter on
"Main Parts and Controls."
Warning!
Never modify this power tool in any way.
Only attachments supplied by STIHL or
expressly approved by STIHL for use
with the specific STIHL model are
authorized. Although certain unauthorized attachments are useable with
STIHL power tools, their use may, in
fact, be extremely dangerous.
If this 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. Check in particular that
the fuel system is tight (no leaks) and
that the controls and safety devices are
working properly. Do not continue
operating this machine if it is damaged.
In case of doubt, have it checked by your
STIHL servicing dealer.
Dusting and spreading mode –
SR 450 only
The dusting and spreading mode can be
used for powder or dry granulate up to a
grain size of 5 mm.
Observe all legal requirements for
handling the chemicals. Observe the
directions for use on the label of the
product at issue.
Using the dusting and spreading
mode
Warning!
An electrostatic charge may be created
in the extension tube and nozzle area
when applying dry materials (e.g. dusts)
with the dusting and spreading attachment. This is especially true in low
humidity conditions. Check the label
and/or material safety data sheet for the
chemical you are applying. To reduce
the risk of severe or fatal injury, do not
use your mistblower to apply substances that may create a combustible
or explosive dust cloud. For instance,
never use your mistblower to apply sulfur or sulfur compounds, since they may
be highly explosive and have relatively
low melting and ignition points.
English
0002BA001 KN
Warning!
To reduce the risk of sparking when
applying any dry substance, make sure
that the discharge system (antistatic
wire in the mistblower connected to a
metal chain) is completely and properly
mounted to the machine, and that the
discharge chain is making contact with
the ground. It is essential to follow the
assembly instructions – see the chapter
"Assembling the Unit" in this instruction
manual.
Do not use the dusting and spreading
attachment on non-conductive surfaces
(e.g. plastic, asphalt).
Never operate your machine with a
missing or damaged discharge system.
SR 430, SR 450
5
English
HANDLING OF CHEMICALS
Warning!
Some chemicals sprayed with your
power tool may contain toxic and/or
caustic substances. Such chemicals
can be dangerous and cause serious or
fatal injury to persons and animals
and/or severe damage to plants and the
environment.
Avoid direct contact with chemicals.
Follow the chemical manufacturer’s
instructions with respect to any contact
with its product.
Warning!
Read the label each time before mixing
or using the chemical and before storing
or disposing of it. Do not trust your
memory. Careless or improper use may
cause serious or fatal injury.
Warning!
Chemicals can be harmful to individuals, animals and the environment if
improperly used. In addition, some
chemicals that are caustic, corrosive or
poisonous should not be used in your
mistblowers.
Carefully read the labels on chemical
containers prior to use. Chemicals are
classified into categories of toxicity.
Pesticides regulated by the EPA, for
instance, use signal words to indicate
the product’s potential to make you sick.
"Caution" appears on pesticides found
to be least harmful to humans.
"Warning" indicates a product that is
more poisonous than those in the
"Caution" group. Pesticides with the
signal word "Danger" on the label are
very poisonous or irritating. They should
be used with extreme care. Finally,
pesticides labeled "Danger – Poison"
are for restricted use only and generally
must be used under the supervision of a
certified applicator. Each category will
have unique handling characteristics.
Familiarize yourself with the
characteristics for the category you are
using.
Chemicals may be used only by persons
trained in their handling and the
appropriate first-aid measures.
Warning!
Mix only compatible pesticides. Wrong
mixtures can produce toxic fumes.
When handling chemicals and when
spraying, make sure you are operating
in accordance with local, state, and
federal environmental protection rules
and guidelines. Do not spray in windy
conditions. To help protect the
environment, use only the
recommended dosage – do not overuse.
Pay special attention when using near
watersheds, waterway, etc.
Warning!
Do not eat, drink, or smoke while handling chemicals or while you are
spraying. Never blow through nozzles,
valves, pipes or any other component
by mouth. Always handle chemicals in a
well-ventilated area while wearing
appropriate protective clothing and
safety equipment. Do not store or transport chemicals together with food or
medicines, and never reuse a chemical
container for any other purpose.
Do not transfer dry or liquid chemicals to
other containers, especially food and/or
drink containers.
Warning!
In case of accidental contact or ingestion of chemicals or in case of
contamination of clothing, stop work and
immediately consult the chemical manufacturer’s instructions. If in doubt as to
what to do, consult a poison control
center or doctor without delay. Have the
product’s label available to read to or
show the persons you consult.
Clean all chemical spills immediately.
Dispose of any residue in accordance
with state or federal laws and
regulations.
Warning!
Keep chemicals out of reach of children,
other unauthorized people and animals.
When not in use, store chemicals in a
safe place. Follow the manufacturer’s
recommendations for proper storage.
6
SR 430, SR 450
English
Preparing chemicals
Prepare chemical solutions of according
to manufacturer's instructions.
– Only prepare sufficient solution for
the job at hand so that nothing is left
over.
– Mix chemicals only in accordance
with instructions – wrong mixtures
can produce toxic fumes or
explosive mixtures.
– Never spray chemicals undiluted.
– Prepare solution and fill the
container outdoors only, in wellventilated locations.
Storage
– Do not store spray solution in the
container for longer than one day.
– Store and transport spray solution
only in approved containers.
– Never store the spray solution in
containers intended for foods,
drinks or animal feed.
– Do not store spray solution with
foods, drinks or animal feed.
– Keep spray solution out of the reach
of children and animals.
– Store the spray solution in a place
secured against unauthorized use.
Disposal
Never dispose of residual chemicals or
contaminated rinsing solutions in
waterways, drains, sewers, street
gutters or manholes.
Disposal of contaminated rinse should
be in accordance with all applicable
laws, regulations and ordinances.
Observe the precautionary instructions
of the chemical manufacturer.
THE USE OF THE POWER TOOL
Transporting the Power Tool
Always switch off the engine before
taking the machine off your back and
putting it down. Empty container when
transporting it in a vehicle; properly
secure it to prevent turnover, fuel
spillage and damage to the unit.
Fuel
Your STIHL power tool uses an oilgasoline mixture for fuel (see the
chapter on "Fuel" in this instruction
manual).
Warning!
Gasoline is an extremely
flammable fuel. If spilled
and ignited by a spark or
other ignition source, it
can cause fire and seri-
ous 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 or the power tool. Note that
combustible fuel vapor may escape
from the fuel system.
Fueling Instructions
Warning!
To reduce the risk of serious injury from
burns, never attempt to refuel the unit
until it has been completely removed
from the operator.
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 the fuel
filler cap while the engine is running.
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
machine.
Warning!
Check for fuel leakage
while refueling and during operation. If fuel
leakage is found, do not
start or run the engine
until the leak is fixed and
any spilled fuel has been wiped away.
Take care not to get fuel on your clothing. If this happens, change your
clothing immediately.
SR 430, SR 450
7
English
Bayonet Fuel Filler Cap
Never use a tool to open or close the
bayonet fuel filler cap, as this could
damage the cap and cause fuel to leak
out.
The bayonet fuel filler cap must be
closed with care after refuelling.
Filling the Container
Warning!
Tighten all connections and check to be
sure the hose is securely attached and
in good condition. Keep the valve lever
on the control lever closed.
Before using the power tool with
chemicals, fill it with fresh water to
assure that you have it properly
assembled and practice spraying. Also,
check for any leaks at this time. When
thoroughly familiar with the power tool
operation, follow normal operating
procedures.
Fill your power tool in well-ventilated
areas, outdoors.
Warning!
Do not use:
– flammables in the mistblower, which
can explode causing serious or fatal
injury;
– caustic or corrosive materials in the
mistblower, that could result in
damage to the unit;
– liquids with a temperature above
120° F (50° C) to avoid scalding and
damage to the unit.
To fill the container, place the power tool
on a level surface. To reduce the risk of
contaminating the surrounding
environment, be careful not to overfill the
container with chemical solution.
To reduce the risk of injury, do not fill
the unit while wearing it on your back.
If you fill the container with a hose
attached to a central water supply, be
sure the end of the hose is out of the
solution to reduce the risk of backflow,
i.e. the chemicals being sucked into the
water supply in the case of a sudden
vacuum.
Calculate the correct amount of
chemical solution so that it is used up at
one time, with no extra solution left in the
tank.
After filling, fit the container cap and
tighten it down firmly.
Warning!
Check for leakage while refilling and
during operation. A leak from the container or a loose fitting could soak your
clothing and come into contact with your
skin.
Before Starting
Warning!
Always check your power tool for proper
condition and operation before starting,
particularly the throttle trigger and setting lever with stop position. The throttle
trigger must move freely and always
spring back to the idle position. Never
attempt to modify the controls or safety
devices.
Warning!
To reduce the risk of leakage and skin
contact with chemicals, check that the
container cap and all connections in the
path of the spray are tight, and be sure
the hose is securely attached and in
good condition. Keep the valve lever
closed.
Warning!
Never operate your power tool if it is
damaged, improperly adjusted or maintained, or not completely or securely
assembled.
Warning!
Check that the spark plug boot is
securely mounted on the spark plug – a
loose boot may cause arcing that could
ignite combustible fumes and cause a
fire.
Keep the control handle clean and dry at
all times; it is particularly important to
keep it free of moisture, pitch, oil, fuel
mix, grease or resin in order for you to
maintain a firm grip and properly control
your power tool.
8
SR 430, SR 450
English
Warning!
To reduce the risk of injury from thrown
parts, check the fan housing for damage
(cracks, nicks, chipping). If any damage
is found, stop using the unit and contact
your STIHL dealer for repair.
Check condition of harness straps and
replace damaged or worn straps.
Warning!
Adjust carrying harness to suit your size
before starting work.
In an emergency, you may slip out of the
harness and throw off the machine
quickly. Try slipping out of the harness a
number of times before using the
machine in order to become
accustomed to it. Do not throw off the
machine while practicing as it could
damage the machine.
Starting
Start the engine at least 10 feet (3 m)
from the fueling spot, outdoors only.
Warning!
Your power tool is a one-person
machine. To reduce the risk of eye or
other injury from thrown objects, insure
that bystanders are at least 50 feet
(15 m) away when starting and during
use. Stop operation immediately if you
are approached.
For specific starting instructions, see the
appropriate section in this instruction
manual. Place the power tool on firm
ground or other solid surface in an open
area. Maintain good balance and secure
footing.
Warning!
When you pull the starter grip, do not
wrap the starter rope around your hand.
Do not let the grip snap back, but guide
the starter rope to rewind it properly.
Failure to follow this procedure may
result in injury to your hand or fingers
and may damage the starter
mechanism.
The assistance of another person may
be needed in placing the unit on your
back after starting. In order to reduce the
risk of injury to the assistant from thrown
objects, chemical spray/dust or from
contact with hot exhaust fumes, the
engine should be kept at idle speed
during this brief period, and your
assistant should not stand in the area of
the outlet nozzle or exhaust. Otherwise,
the unit should be started and operated
without assistance.
During Operation
Holding and Controlling the Power
Tool
The mistblower is designed for singlehanded operation with the right hand on
the control handle. It should be carried
as a backpack with the straps of the
harness over both shoulders.
Warning!
To reduce the risk of loss of control,
never carry the unit with the strap(s)
over one shoulder.
Wrap your fingers tightly around the
handle, keeping the control handle
cradled between your thumb and
forefinger. Keep your hand in this
position to have your machine under
control at all times.
Warning!
In order to keep the container upright
and reduce the risk of spillage, do not
bend at the waist. Bend only at the
knees and support yourself as required
to ensure proper balance.
Remember that a mistblower filled with
liquid has a significant amount of weight.
Use caution when bending, leaning or
walking.
Warning!
Do not overreach. Keep proper footing
and balance at all times. Special care
must be taken in slippery conditions
(wet ground, snow and ice) and in difficult, overgrown terrain. Watch for
hidden obstacles such as tree stumps,
roots and ditches to avoid stumbling.
For better footing, clear away fallen
branches, scrub and cuttings. Be
0002BA002 KN
extremely cautious when working on
slopes or uneven ground.
To reduce the risk of stumbling and loss
of control, do not walk backward while
operating the machine. Avoid stepping
on antistatic chain – SR 450 only.
SR 430, SR 450
9
English
Warning!
To reduce the risk of injury from loss of
control, never work on a ladder, in a tree
or on any other insecure support.
During work breaks, do not leave the
power tool in the hot sun or near any
heat source.
Working Conditions
Operate and start your power tool only
outdoors in a well-ventilated area.
Operate it under good visibility and
daylight conditions only. Work carefully.
Warning!
As soon as the engine is
running, this product generates toxic exhaust
fumes containing chemicals, such as unburned
hydrocarbons (including
benzene) and carbon monoxide, that
are known to cause respiratory illness /
injury, cancer, birth defects, or other
reproductive harm. Some of the gases
(e.g. carbon monoxide) may be colorless and odorless. To reduce the risk of
serious or fatal injury/illness from inhaling toxic fumes, never run the machine
indoors or in poorly ventilated locations.
Warning!
Inhalation of chemicals can cause susceptible persons to have an allergic or
asthmatic reaction. Substantial or
repeated inhalation of certain chemicals
may cause respiratory disease, cancer,
birth defects or other reproductive harm.
Control the chemical spray/dust at the
source where possible. Use good work
practices, such as operating the unit so
that the wind or operating process does
not blow the chemical spray/dust back
on the operator. Follow the recommendations of EPA/OSHA/NIOSH and
occupational and trade associations
with respect to proper usage. When the
inhalation of the chemical spray/dust
being applied cannot be avoided, the
operator and any bystanders may need
to wear a respirator approved by
NIOSH/MSHA for the type of chemical
encountered. Consult the label of the
chemical product being used.
Warning!
If you are unfamiliar with the risks associated with the particular chemical at
issue, review the product label and/or
material safety data sheet for that substance and/or consult the material
manufacturer/supplier. You may also
consult your employer, governmental
agencies such as the EPA, 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.
Operating instructions
Warning!
In the event of an emergency, switch off
the engine immediately – move the
setting lever to 0 or STOP.
Warning!
Never spray in the direction of humans,
animals or property which might be
injured or damaged by spray formula.
Pay attention to the direction of the wind,
i.e., do not work against the wind. When
spraying, stand so that the wind does
not blow towards you or bystanders.
Keep children and pets away from areas
that have just been sprayed. After the
use of some chemicals, especially
agricultural pesticides, a notice must be
posted on the treated area that a
"Restricted Entry Interval" (REI) is in
effect. See the product’s label and any
applicable governmental regulations.
10
SR 430, SR 450
English
Danger!
Your power tool is not
insulated against electric
shock. To reduce the risk
of electrocution, never
operate this power tool in
the vicinity of any wires or
cables (power, etc.) which may be carrying electric current. Do not spray on or
near electrical installations.
Warning!
To reduce the risk of personal injury, do
not direct air blast towards bystanders,
since the high pressure of the air flow
could injure eyes and could blow small
objects at great speed.
Warning!
The blower fan between the air intake
and output openings rotates whenever
the engine is running.
Never insert any foreign object into the
air intake of the machine or into the
nozzle of the blower. It will damage the
fan wheel and may cause serious injury
to the operator or bystanders as a result
of the object or broken parts being
thrown out at high speed.
Do not place the blower on the ground
when operating at high speed, because
small objects such as sand, grass, dust,
etc. may be pulled into the air intake and
damage the fan wheel.
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 and burn injury,
keep the area around the muffler clean.
Remove excess lubricant and all debris
such as pine needles, branches or
leaves. Let the engine cool down sitting
on concrete, metal, bare ground or solid
wood (e.g. the trunk of a felled tree)
away from any combustible substances.
Warning!
Never modify your muffler. The muffler
could be damaged and cause an
increase in heat radiation or sparks,
thereby increasing the risk of fire and
burn injury. You may also permanently
damage the engine. Have your muffler
serviced and repaired by your STIHL
servicing dealer only.
After Finishing Work
Always wash yourself thoroughly with
soap and water after spraying or
handling chemicals. Shower
immediately, and wash all protective
clothing separately from other items.
Follow any additional recommendations
of the chemical manufacturer.
Always clean dust and dirt off the power
tool.
Warning!
Empty, rinse and clean container and
assembly after each use. This helps to
prevent the solution from crystallizing,
which could later cause clogging and
chemical damage to the unit. In addition, residual chemicals may have
undesirable effects during subsequent
spraying with a different type of chemical (e.g., residual herbicide may
damage or kill plants being sprayed with
a pesticide).
Do not store the mistblower with spray
solution in the container.
Store the unit in a place secured against
unauthorized use.
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 make a
warranty claim for a component
which has not been serviced or
maintained properly or if
nonapproved replacement parts were
used, STIHL may deny coverage.
Warning!
Use only identical STIHL replacement
parts for maintenance and repair. Use of
non-STIHL parts may cause serious or
fatal injury.
SR 430, SR 450
11
English
Strictly follow the maintenance and
repair instructions in the appropriate
section in this instruction manual.
Please refer to the maintenance chart in
this instruction manual.
Warning!
Always stop the engine and make sure
that the fan 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 this instruction manual.
Have such work performed by your
STIHL servicing dealer only.
Do not clean your machine with a
pressure washer. The solid jet of water
may damage parts of the machine.
Warning!
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 terminal of the proper size. (Note: If
terminal has detachable SAE adapter
nut, it must be securely attached.) A
loose connection between spark plug
terminal and the ignition wire connector
in the boot may create arcing that could
ignite combustible fumes and cause a
fire.
Warning!
Do not operate your power tool if the
muffler is damaged, missing or modified. An improperly maintained muffler
will increase the risk of fire and hearing
loss. If your muffler was equipped with a
spark-arresting screen to reduce the
risk of fire, never operate your power
tool if the screen is missing or damaged.
Remember that the risk of forest fires is
greater in hot or dry weather.
Tighten all nuts, bolts and screws except
the carburetor adjustment screws after
each use.
For maintenance items please also refer
to the maintenance chart in this
instruction manual.
Store the power tool in a dry and 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" in this
instruction manual.
Store fuel in an approved and properly
labeled safety-type canister only. Take
care when handling gasoline! For health
and safety reasons, avoid direct contact
with the skin and avoid inhaling fuel
vapor!
Assembling the Unit
Hose and throttle cable, and the
metering unit's operating cable on
the SR 450, come connected
ready for use and must not be
kinked while assembling the
machine.
The combination wrench and
screwdriver are in the supplied
accessory bag.
Fitting the pleated hose on the blower
tube
1
N Slide the wide hose clamp (1) onto
the blower tube (2) and line it up.
2
2
3
0002BA003 KN
Warning!
Never test the ignition system with the
boot removed from the spark plug or
with a removed spark plug, since uncontained sparking may cause a fire.
12
4
0002BA004 KN
N Push the ring seal (3) (wide lip
facing left) onto the blower tube (2).
N Push the pleated hose (4) over the
ring seal (3).
SR 430, SR 450
English
Fitting the pleated hose on the elbow
– SR 450 only
6
4
1
4
N Slide the wide hose clamp (1) onto
the pleated hose (4).
N Secure the wide hose clamp (1) with
the screw (5) – the blower tube (2)
must still rotate.
Fitting the pleated hose on the elbow
– SR 430 only
5
6
7
N Slide the narrow hose clamp (6)
(bezel facing left) onto the elbow
and line it up.
N Push the pleated hose (4) over the
elbow (7).
2
4
0002BA005 KN
8
8
6
N Slide the narrow hose clamp (6)
onto the pleated hose (4).
N Secure the hose clamp (6) with the
screw (8) from the side facing the
operator.
Fitting the antistatic system – SR 450
only
0002BA006 KN
3
1
9
N Push the antistatic wire (9) into the
pleated hose (4).
0002BA007 KN
6
7
4
9
N Slide the narrow hose clamp (6)
(bezel facing left) onto the elbow
and line it up.
N Push the antistatic wire (9) between
the ends of the narrow hose
clamp (6).
N Push the pleated hose (4) over the
elbow (7).
0002BA008 KN
4
0002BA009 KN
SR 430, SR 450
2
0002BA054 KN
N Attach the antistatic wire (1) and
chain (2) to the blower housing with
screw (3).
13
English
6
4
8
8
6
N Slide the narrow hose clamp (6)
onto the pleated hose (4).
N Secure the hose clamp (6) with the
screw (8) from the side facing the
operator – make sure the antistatic
wire is positioned in the notch.
Adjusting and securing the control
handle
a
1
N Slide the control handle (1) along
the tube to the most comfortable
position – distance between nozzle
outlet (2) and the control handle (1)
must be at least 19.7 in. (a)
(500 mm).
0002BA010 KN
1
N Secure the control handle (1) with
the screw (3).
Adjusting the Throttle
Cable
It may be necessary to correct the
adjustment of the throttle cable after
2
3
assembling the machine or after a
prolonged period of operation.
Adjust the throttle cable only when the
0002BA011 KN
unit is completely and properly
assembled.
N Set throttle trigger to the full throttle
position – as far as stop.
N Carefully rotate the screw in the
0002BA058 KN
throttle trigger in the direction of the
arrow until you feel initial resistance.
Then rotate it another full turn.
0002BA013 KN
N Put the machine on your back and
adjust the harness – see "Harness".
14
4
0002BA012 KN
N Use the retainer (4) to secure the
hose and throttle cable, and
metering unit's operating cable on
the SR 450, to the 6th pleat (arrow)
on the pleated hose.
SR 430, SR 450
English
Harness
Adjusting the harness
N Pull the ends of the straps
downward to tighten the harness.
N Adjust the harness so that the
backplate fits snugly and securely
against your back.
Loosening the harness
N Lift the tabs of the sliding adjusters.
Disconnecting harness from
backplate
1
N Pull the ring (1) out of the slot.
373BA003 KN
373BA004 KN
Fuel
This engine is certified to operate on
unleaded gasoline and the STIHL twostroke engine oil at a mix ratio of 50:1.
Your engine requires a mixture of highquality gasoline and quality two-stroke
air cooled engine oil.
Use mid-grade unleaded gasoline with a
minimum octane rating of 89 (R+M/2). If
0002BA055 KN
the octane rating of the mid-grade
gasoline in your area is lower, use
premium unleaded fuel.
Fuel with a lower octane rating may
increase engine temperatures. This, in
turn, increases the risk of 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 and
catalytic converters as well. This could
cause running problems or even
damage the engine. For this reason
STIHL recommends that you use only
nationally recognized high-quality
unleaded gasoline!
Use only STIHL two-stroke engine oil or
equivalent high-quality two-stroke
engine oils that are designed for use
only in air cooled two-cycle engines.
We recommend STIHL 50:1 two-stroke
engine oil since it is specially formulated
for use in STIHL engines.
Do not use BIA or TCW rated (twostroke water cooled) mix oils or other
mix oils that state they are for use in both
SR 430, SR 450
15
English
water cooled and air cooled engines
(e.g., outboard motors, snowmobiles,
chain saws, mopeds, etc.).
Take care when handling gasoline.
Avoid direct contact with the skin and
avoid inhaling fuel vapor. When filling at
the pump, first remove the canister from
your vehicle and place the canister on
the ground before filling. Do not fill fuel
canisters that are sitting in or on a
vehicle.
The canister should be kept tightly
closed in order to avoid any moisture
getting into the mixture.
The machine‘s fuel tank and the canister
in which fuel mix is stored should be
cleaned as necessary.
Fuel mix ages
Only mix sufficient fuel for a few days
work, not to exceed 3 months of storage.
Store in approved fuel-canisters only.
When mixing, pour oil into the canister
first, and then add gasoline. Close the
canister and shake it vigorously by hand
to ensure proper mixing of the oil with
the fuel.
Fueling
Preparations
Before fueling, clean the fuel filler cap
and the area around it so that dirt cannot
fall into the tank.
Thoroughly shake up the mixture in the
canister before fueling your machine.
To avoid the risk of burns or other
injuries due to escaping gasoline
vapors, open the fuel filler cap
carefully so that any excess
pressure in the tank can escape
slowly.
Never use a tool to open the
bayonet catch. This could damage
the cap and cause fuel to leak out.
Do not spill any fuel and do not fill the
tank up to the brim.
Open the fuel filler cap
1.
2.
0002BA014 KN
N Press the cap down with your hand
as far as possible, turn it
counterclockwise (approx. 1/8 turn)
and remove it.
Fueling
Take care not to spill fuel while fueling
and do not overfill the tank.
Close the fuel filler cap
1.
2.
Gasoline
Oil (STIHL 50:1 or equivalent high-quality oils)
US gal. US fl.oz
12.6
2 1/2 6.4
512.8
Dispose of empty mixing-oil canisters
only at authorized disposal locations.
16
0002BA015 KN
N Fit the cap and turn it until it
engages in the bayonet mount.
N Press the cap down with your hand
as far as possible and turn it
clockwise (approx. 1/8 turn) until it
engages completely.
SR 430, SR 450
English
Change the fuel pickup body every
year
N Drain the fuel tank.
N Pull the fuel pickup body out of the
tank with a hook and disconnect it
from the hose.
N Connect a new fuel pickup body to
the hose.
N Return the fuel pickup body to the
tank.
Information Before You
Start
With the engine stopped and
before starting, check the air
intakes between the backplate
and powerhead for blockages and
clean if necessary.
Control handle
0002BA016 KN
1
2
1 Setting lever
2 Throttle trigger
3 Throttle trigger interlock
Functions of setting lever
a
b
0002BA053 KN
a 1/3 throttle
b 2/3 throttle
To disengage the travel limiter,
N return the setting lever (1) to the run
position F.
3
0002BA017 KN
SR 430, SR 450
Run position F
Engine runs or is ready to start. Throttle
trigger (2) can be moved to any position.
Stop position 0
Ignition is interrupted, engine stops. The
setting lever (1) is not locked in this
position. It springs back to the run
position. The ignition is switched on
again.
Throttle trigger limiter position
Travel of throttle trigger can be limited in
two stages:
17
English
Starting / Stopping the
Engine
Before starting
1
N Close valve lever (1) for solution
feed.
Additionally on SR 450:
2
N The setting lever must be on F
0002BA060 KN
H
L
LA
N Press the fuel pump bulb (3) at least
eight times – even if the bulb is filled
with fuel.
Cold engine (cold start)
Warm engine (warm start)
4
0002BA019 KN
0002BA022 KN
N Press in the choke knob (4) and turn
it to o.
Also use this setting if the engine has
been running but is still cold.
0002BA020 KN
N Close the metering lever (2) for
dusting and spreading mode.
Starting the engine
N Observe safety precautions.
Start your unit on a clean, dustfree surface only to ensure that no
dust is sucked in.
18
0002BA052 KN
4
0002BA021 KN
N Press in the choke knob (4) and turn
it to c.
SR 430, SR 450
English
Cranking
N Place the unit securely on the
ground and make sure that
bystanders are well clear of the
nozzle outlet.
N Make sure you have a firm footing:
Hold the unit with your left hand on
the housing and put one foot against
the base plate to prevent it slipping.
N 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 the starter rope to full
length – 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.
As soon as the engine runs
4
0002BA023 KN
N Pull the throttle trigger – the choke
knob (4) automatically returns to the
run position (e).
At very low outside temperatures:
N Open throttle slightly – warm up the
engine for a short period.
Shut off the engine
N Move the setting lever in the
direction of 0 – the engine stops –
the setting lever springs back to the
on position.
Other hints on starting
Engine stalls in cold start position c
0002BA024 KN
or under acceleration
N Move the choke knob to o and
continue cranking until the engine
runs.
Engine does not start in warm start
position o
N Move the choke knob to c and
continue cranking until the engine
runs.
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.
0002BA025 KN
SR 430, SR 450
19
English
Fuel tank run until completely dry
N After refueling, press the fuel pump
bulb at least eight times – even if the
bulb is filled with fuel.
N Set the choke knob according to
engine temperature.
N Start the engine.
Operating Instructions Metering Unit
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.
Valve lever
A
B
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.
After Finishing Work
Storing for a short period: Wait for the
engine to cool down. Empty the fuel tank
and keep the machine in a dry place,
well away from sources of ignition, until
you need it again. For longer out-ofservice perionds – see "Storing the
Machine".
Solution feed is started and stopped with
the valve lever (1).
N Position A (valve lever vertical, up)
– open
N Position B (valve lever horizontal,
down) – closed
Metering knobs
The scope of supply includes metering
knobs which allow a wide range of
different discharge rates.
1
1
0002BA061 KN
20
SR 430, SR 450
English
A B
C
– Standard metering knob (A) with
positions 1 to 5
– Fine metering knob (B) with
positions 1.0 to 2.3
– ULV metering knob
1)
(C) with
positions 0.5 to 0.8
Changing the metering knob
N Pull the existing metering knob up
and out of its seat.
N Push the new metering knob into its
seat as far as stop.
Fitting the strainer
2)
The strainer supplied must always be
fitted when the ULV metering knob is
used.
SR 430
0002BA064KN
SR 450
N Push the strainer into its seat until it
snaps into position.
Removing
0002BA065 KN
Adjusting the discharge rate
2
4
3
N Turn the metering knob (2) on the
nozzle (3) to obtain the required
discharge rate – see tables.
The numbers on the metering knob must
be lined up with the lug (4) under the
knob.
Position "E" is used for emptying the
container. Do not use this position for
spraying – see "After Finishing Work".
Machines with pressure pump
(special accessory)
0002BA066 KN
On machines with a pressure pump, use
only the supplied "fine" metering knob
with settings 1.0 to 2.3 or the ULV
metering knob with settings 0.5 to 0.8.
Discharge rate without pressure
pump
Spray tube 0° to -30° to the horizontal
0002BA027 KN
1)
Included in the scope of supply or
available as a special accessory depending on market
SR 430, SR 450
N Pry the strainer out of its seat – as
shown.
2)
Included with ULV metering knob
0002BA067 KN
21
English
"Standard" meterng knob
Knob position Discharge rate (l/min)
(mean value)
10,69
21,42
31,86
42,25
52,64
"Fine" meterng knob
Knob position Discharge rate (l/min)
(mean value)
1.0 0,17
1.8 0,43
2.3 0,76
ULV metering knob
Knob position Discharge rate (l/min)
(mean value)
0.5 0,05
0.65 0,09
0.8 0,14
Discharge rate with pressure pump
(special accessory)
Spray tube horizontal (0°)
"Fine" meterng knob
Knob position Discharge rate (l/min)
1.0 0,66
1.8 1,87
2.3 3,00
ULV metering knob
Knob position Discharge rate (l/min)
0.5 0,19
0.65 0,33
0.8 0,48
Checking flow rate
N Place the unit on the ground.
N Fill the container with water up to 10
liter mark.
Machines without pressure pump
N Set the "standard" metering knob to
"5".
N Start the machine.
N Hold the spray tube horizontally, run
the engine at full throttle, spray the
contents of the container down to
the 5 liter mark and note the time
taken.
The time required to spray 5 liters fluid
should be betweeen 110 and 140
seconds.
Machines with pressure pump
(special accessory)
N Set the "fine" metering knob to 2.3.
N Start the machine.
N Hold the spray tube horizontally, run
the engine at full throttle, spray the
contents of the container down to
the 5 liter mark and note the time
taken.
The time required to spray 5 liters fluid
should be betweeen 90 and 120
seconds.
In case of deviations:
N Check the container, hose system,
metering knob and optional
pressure pump for cantamination
and clean if necessary.
N Check blower air intake and clean if
necessary.
N Check engine setting and correct if
necessary.
If there is no improvement, contact your
dealer for assistance.
22
SR 430, SR 450
English
Dusting and Spreading
Mode
SR 450 only.
Metering lever
A
1
B
1
The discharge rate is infinitely variable
with the metering lever (1).
N Position A (metering lever vertical –
feed closed
N Position B (metering level parallel to
blower tube) – feed open
N Close valve lever (1) for solution
feed.
2
N Close the metering lever (2) for
dusting and spreading mode.
0002BA028 KN
Solution container
1
A
0002BA060 KN
B
0002BA052 KN
The selected operating mode is
indicated by the symbols on the
metering unit's housing.
N Position A – Mistblowing mode
N Position B – Dusting and spreading
mode
0002BA029 KN
Conversion from mistblowing to
dusting and spreading mode
N Empty and clean the solution
container – see "After Finishing
Work".
SR 430, SR 450
0002BA062 KN
N Insert a suitable tool (e.g.
screwdriver) in the two recesses
(arrows) to loosen the strainer (1).
N Pull the strainer (1) upward and out
of the solution container.
23
English
2
2
N Squeeze the tabs (2) together and
pull the lever (3) outwards.
4
N Remove the solution container from
the metering unit's housing (4) and
turn it to position B (dusting and
spreading mode).
4
0002BA031 KN
N Thoroughly clean the plastic pins
and the sealing face on the solution
container – check that there is no
residue.
N Thoroughly clean the holes and
sealing face on the metering unit (4)
– check that there is no residue.
N Fit the solution tank on the metering
unit's housing (4).
0002BA032 KN
5
N Hook the lever (3) over the bar (5)
on the solution container.
3
6
0002BA033 KN
6
2
2
N Press the levers (3) down until the
tabs (2) snap into their seats (6) on
the housing with a loud click.
N Check that the container is firmly
seated.
Blower tube
0002BA034 KN
2
1
3
6
0002BA035 KN
24
3
0002BA036 KN
N Insert a screwdriver into the tab (1)
of the hose clamp (2) on the control
handle.
N Turn the screwdriver clockwise to
loosen the hose clamp (2).
N Pull the hose (3) off the stub.
SR 430, SR 450
English
6
4
5
N Rotate the nozzle (4) until the
lugs (5) are covered.
N Pull the nozzle (4) off the blower
tube (6).
Converting back to misblowing mode
The conversion is carried out in the
reverse sequence.
Fitting the hose
2
N Push the hose with clamp (2) over
the stub on the control handle.
N Use pliers to squeeze the hose
clamp together (2) until the retaining
strip engages and locks.
Calculating Required
Quantity of Solution
Determining surface area (m2)
In the case of ground crops, simply
multiply the length of the field by its
0002BA037 KN
width.
The surface area of high-growing plants
is calculated approximately by
measuring the length of the rows and the
average height of the foliage. The result
is multiplied by the number of rows and
then by two if both sides have to be
treated.
The surface area in hectares is obtained
by dividing the number of square meters
by 10,000.
Example:
A field 120 meters long and 30 meters
wide has to be treated with a pesticide.
Area:
120 m x 30 m = 3,600 m
3,600 / 10,000 = 0.36 ha
0002BA038 KN
Determining quantity of active
ingredient
Refer to the instructions supplied with
the active ingredient to determine:
– Required quantity of active
ingredient for 1 hectare (ha).
– Concentration of active ingredient
(mix ratio).
2
Multiply the required quantity of active
ingredient for 1 hectare by the area
determined in hectares. The result is the
quantity of active ingredient required for
the area to be treated.
Example:
According to the maker’s instructions,
0.4 liters of active ingredient are
required per hectare to obtain a
concentration of 0.1%.
Quantity of active ingredient:
0.4 (l/ha) x 0.36 (ha) = 0.144 l
Determining quantity of solution
The quantity of solution required is
calculated as follows:
T
W
x 100 = T
K
TW = Quantity of active ingredient in l
K = Concentration in %
T
= Required quantity of solution in l
W
Example:
The calculated quantity of active
ingredient is 0.144 liters. According to
the maker’s instructions, the
concentration is 0.1%.
Quantity of solution:
0.144 l
0,1 %
Determining walking speed
Carry out a trial run with the machine
fueled and the container filled with
water. Operate the spray tube (swing it
B
x 100 = 144 l
SR 430, SR 450
25
English
back and forth) as for the real run
described below. Determine the
distance walked in one minute.
Also use the trial run to check the
selected working width. The best
working width for low-growing crops is
4–5 m. Mark the working width with
stakes.
Dividing the distance walked in meters
by the time in minutes gives you the
walking speed in meters per minute
(m/min).
Example:
The distance covered in one minute is
10 meters.
Walking speed:
10 m
1min
= 10 m/min
Determining discharge rate
The setting of the metering unit is
calculated as follows:
V
(l) x vb(m/min) x b(m)
a
A (m2)
= Quantity of solution
V
a
v
= Walking speed
b
V
= Discharge rate
a
= V
(l/min)
c
b = Working width
A = Area
Example:
The values determined above and a
working width of 4 meters require the
following setting on the metering unit:
144 l x 10 (m/min) x 4m
3,600 m
Hectares (ha) have to be converted into
2
m
(ha x 10,000 = m2).
2
= 1.6 l/min
To adjust the required discharge rate
see "Metering Unit".
Filling the Container
1
372BA021 KN
N The gasket (1) in the cap must be in
good condition, lubricated with
grease and clean.
N Stand the machine on a level
surface.
0002BA039 KN
N Do not exceed maximum level of 3.7
gal (14 liters) (arrow).
26
SR 430, SR 450
English
Mistblowing
1
N Close valve lever (1) for solution
feed.
N Pour thoroughly mixed spray
solution into the container through
the strainer.
N Fit the cap and tighten it down
firmly.
Dusting and spreading mode –
SR 450 only
1
0002BA060 KN
N Close the metering lever (1).
N Pour the material into the container.
N Fit the cap and tighten it down
firmly.
0002BA041 KN
Working
Mistblowing
The metering lever on the SR 450 must
be closed when operating in the
mistblowing mode – see dusting and
spreading mode.
N Adjust discharge rate with the
0002BA042 KN
metering knob – see "Metering
Unit".
N Open the valve lever – see
"Metering Unit".
Different baffle screens can be fitted to
alter the shape and direction of the spray
for accurate application of the solution.
Conical screen
SR 430, SR 450
372BA006 KN
Spray is finely atomized – short, broad
and dense spray mist.
27
English
Deflector screen
Diverts spray upwards – for under-leaf
treatment of low-growing crops.
Dual defelector screen
Splits the spray in two – allows two
closely planted rows to be treated in one
pass.
After Finishing Work
Emptying the solution container
N Close the valve lever.
N Shut off the engine – see "Starting /
372BA007 KN372BA008 KN
Stopping the Engine".
1
N Turn the metering knob (1) to
position "E" and collect the
remaining solution in a suitable
container.
Cleaning the solution container
N Rinse and clean the solution
container and hose system with
clear water.
N Dispose of remaining spray solution
and rinsing liquid in accordance with
local environmental requirements –
follow maker's instructions.
N Allow the machine to dry with the
cap removed.
If strainer is dirty:
0002BA062 KN
N Insert a suitable tool (e.g.
screwdriver) in the two recesses
(arrows) to loosen the strainer (1).
N Pull the strainer (1) upward and out
of the solution container.
0002BA044 KN
2
0002BA045 KN
N Clean the strainer (2) with clear
water and a brush.
After dusting and spreading – SR 450
only
N Run the unit until the solution
container is completely empty
N Close the metering lever.
N Shut off the engine – see "Starting /
Stopping the Engine".
N Rinse and clean the solution
container with clear water.
28
SR 430, SR 450
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