STIHL SR 400, SR 320 Owner's Manual
STIHL SR 32D, 4DD
Instruction Manual
Owner's Manual
Assembling
.
Safety Precautions
Operating Instructions
Maintenance
iii
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Controls 2
Safety Precautions 4
Assembly of Unit 11
Fuel 14
Fueling 15
Control Handle 16
Starting 17
Air Filter 19
Adjusting the Carburetor 20
Operating Instructions 21
Checking Spark Plug 22
Replacing the Starter Rope
and Rewind Spring 23
Special Accessories 26
Metering Unit 27
Notes on Use of Mistblower 28
Printed on chlorine-free paper
Maintenance Chart 37
Specifications 38
STIHL Incorporated Federal Emission
Control Warranty Statement 39
This Manual contains operating and
safety instructions for all STIHL SR 320,
SR 400 mistblowers.
Pay special attention to the safety
precautions outlined on pages 4 to 10.
Allow only persons who 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 the maintenance and safety
precautions before using your mistblower.
Contact your STIHL dealer or the STIHL
distributor for your area if you do not
understand any of the instructions in this
Manual.
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Because a mistblower is a high-speed
tool, 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.
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 mistblower differ from those
described in this Manual, please contact
your STIHL dealer for information and
assistance.
1999 Andreas Stihl AG & Co., Waiblingen
0458 352 3021. M0,15. G9. PM. Printed in USA
65
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1
1 = Baffle screen
2 = Nozzle
3 = Metering knob
4 = Extension tube
5 = Throttle trigger
6 = Setting lever
3
6
7
2
4
5
8
9
11
12
14
7 = Stop switch
8 = Control handle
9 = Stop cock
10 = Pleated hose
11 = Carrying harness
12 = Back plate
13 = Back rest pad
14 = Air filter cover
10
15
15
52BA002 KN
65
21
20
13
22
19
17
18
16
A001 KN
15 = Rubber buffers
16 = Container filler cap
17 = Container
18 = Spark plug boot
19 =Carburator adjustment screws
20 = Choke knob
21 =Fuel filler cap
22 = Starter grip
23 =Muffler
23
003 KN
'HILQLWLRQV
%DIIOHVFUHHQ
To vary the direction and shape of
the spray.
1R]]OH
Directs and widens the spray.
0HWHULQJNQRE
For varying the spraying rate.
([WHQVLRQWXEH
Accessory for lengthening the
discharge tube.
7KURWWOHWULJJHU
Controls the speed of the engine.
6HWWLQJOHYHU
Sets the throttle to various positions.
6WRSVZLWFK
Stops engine.
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Handle on the flexible hose to hold
and direct the tube in the required
direction.
6WRSFRFN
Opens and closes spray liquid hose.
3OHDWHGKRVH
For spraying, dusting or spreading
in the desired direction.
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For carrying the unit.
%DFNSODWH
Helps protect the back of the user.
%DFNUHVWSDG
Increases carrying comfort.
$LUILOWHUFRYHU
Covers the air filter element.
5XEEHUEXIIHUV
Elements designed to reduce the
transmission of vibrations created by
the engine to the operators back.
&RQWDLQHUILOOHUFDS
For closing the container.
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Contains the material to be sprayed.
6SDUNSOXJERRW
Connects the spark plug to the
ignition wire.
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For tuning carburator.
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Eases engine starting by enriching
mixture.
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For closing the fuel tank.
6WDUWHUJULS
The grip of the pull starter, which is
the device to start the engine.
0XIIOHU
Attenuates exhaust noises and
diverts exhaust gases away from
operator.
65
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The use of any mistblower
may be dangerous. It is
important that you read, fully
understand and observe the
following safety precautions and
warnings.
Reread the owner‘s manual
and the safety instructions
periodically.
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Careless or improper use of the machine may cause serious injury. Have
your STIHL Dealer show you how to
operate your mistblower. Observe all
applicable local safety regulations,
standards and ordinances.
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Minors should never be allowed to use a
mistblower: Bystanders, especially children, and animals should not be allowed
in the area where a machine is in use.
Never let the unit run unattended.
Do not lend or rent your machine without
the owner‘s manual. Be sure that
anyone using your unit understands the
information contained in this manual.
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 of your owner‘s manual
for a description of the controls and
function of the parts of your machine.
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1. the operator
2. the mistblower
3. the use of the mistblower .
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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 a
mistblower when you are fatigued.
Be alert - if you get tired while operating
your machine, take a break. Tiredness
may result in loss of control. Working
with any mistblower can be strenuous.
If you have any condition that might be
aggravated by strenuous work, check
with your doctor before operating the
machine.
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Prolonged use of a mistblower, (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 engine
to the operator’s hands. An AV
system is recommended for those
persons using power tools on a
regular or sustained basis.
- Wear gloves and keep your hands
warm.
- Keep the AV system well maintained.
A mistblower with loose components or with damaged or worn AV
buffers will tend to have higher
vibration levels.
- Maintain a firm grip at all times, but
do not squeeze the handles with
constant, excessive pressures, 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 monitor closely the
condition of their hands and fingers. If
any of the above symptoms appear,
seek medical advice immediately.
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Clothing must be sturdy and snug-fitting,
but allow complete freedom of movement. Avoid loose-fitting jackets, flared
or cuffed pants, scarfs, unconfined long
hair or anything that could be drawn into
the air intake.
Wear overalls or long
pants to protect your legs.
Do not wear shorts.
Use of gloves when
working with the mistblower is recommended.
Good footing is most important. Wear
sturdy shoes with nonslip soles.
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To reduce the risk of injury associated
with the inhalation of dust, use a face
filter mask. When using the mistblower,
follow all of the chemical manufacturers
instructions with respect to proper eye,
skin, nose and mouth protection. When
working in greenhouses, make sure they
are well ventilated and, if necessary
wear a respirator.
:DUQLQJ
Proper eye protection is a must. Even
though the discharge is directed away
from the operator, ricochets and
bounce-backs can occur during mistblower operations.
Never operate a mistblower
unless wearing goggles or
properly fitted safety glasses
with adequate top and side
protection which comply with
ANSI Z 87.1 (or your applicable national standard).
Fellow workers must also wear eye protection.
Mistblower 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 regulary.
Cloth soaped with chemical solutions
has to be changed immediately.
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For illustrations and definitions of the
mistblower parts see the chapter on
"Parts and Controls"!
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Never modify a mistblower in any way.
Only attachments supplied by STIHL or
expressly approved by STIHL for use
with the specific STIHL mistblower
models are authorized. Although certain
unauthorized attachment are useable for
the STIHL mistblower, their use may be
extremely dangerous.
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7UDQVSRUW
Always turn off the engine before taking
the machine off your back and putting it
down. When transporting your unit in a
vehicle, properly secure it to prevent
turnover, fuel spillage and damage to
the machine.
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Before starting work, always inspect the
rubber buffers which connect the engine
to the pack frame. If the buffers are torn
or damaged, they should be replaced by
your STIHL dealer. Failure of one or
more buffers may cause the engine or
fuel tank to hit or rub against other parts,
and may lead to serious injury from increased vibrations or from fire as the
result of fuel leakage.
Adjust carrying harness to suit your size
before starting work.
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This STIHL unit uses an oil-gasoline
mixture for fuel (see the chapter on
"Fuel" of your owner‘s manual).
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Gasoline is an extremely
flammable fuel. If 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.
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Fuel your machine in well-ventilated
areas, outdoors only. Always shut off the
engine and allow it to cool before
refueling. Relieve fuel tank pressure by
loosening fuel cap slowly. Never remove
fuel filler cap while 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
mistblower and check for leakage.
Always tighten fuel filler cap securely
after fueling.
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To reduce the risk of serious injury from
burns, never attempt to refuel the unit
until it has been completely removed
from the operator.
:DUQLQJ
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.
Always store gasoline in approved
container.
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Unit vibrations can cause an improperly
tightened fuel cap to loosen or come off
and spill quantities of fuel.
In order to reduce risk of
fuel spillage and fire,
tighten fuel cap by hand
with as much force as
possible.
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You should always inspect your unit
before starting it. Make sure the controls
and safety devices are working properly.
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Your mistblower 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 (15m)
away during use.
Stop the engine immediately if you are
approached.
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 or from contact with 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.
For specific starting instructions, see the
appropriate section of your owner‘s
manual. Place the machine on firm
ground or other solid surface in an open
area. Maintain good balance and secure
footing.
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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 slowly back to
permit the rope to rewind properly.
Failure to follow this procedure may
result in injury to hand or fingers and
may damage the starter mechanism.
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Never operate your machine if it is
damaged, improperly adjusted or not
completely and securely assembled.
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Start and operate your unit outdoors in a
ventilated area.
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Your mistblower produces poisonous exhaust
fumes as soon as the
combustible engine is
running. These gases
(e.g. carbon monoxide)
may be colorless and odorless.
To reduce the risk of serious or fatal
injury from breathing toxic fumes, never
run the mistblower indoors or in poorly
ventilated locations. Ensure proper
ventilation when working in trenches or
other confined areas.
Keep the space behind the engine clear
at all times to allow for the escape of hot
and toxic exhaust fumes.
Operate your machine under good
visibility and daylight conditions only.
Work carefully.
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When working with the mistblower,
always wear it on your back using the
carrying harness. 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.
Make sure your control handle and grip
is in good condition and free of moisture,
pitch, oil or grease.
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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.
Mistblowers may also be used in greenhouses which are well ventilated if the
operator can protect himself from any
harmful effects through the use of proper
eye, skin, nose and mouth protection.
Breathing exhaust fumes or toxic chemicals in mist can cause serious or fatal
injury.
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Never insert any foreign object into the
air intake of the machine or into the
nozzle of the mistblower. It wil 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 mistblower on the
ground when operating at high speed,
because small objects such as sand,
gras, dust, etc. may be pulled into the air
intake and damage the fan wheel.
In the event of the machine catching fire
(for what ever reason) throw it off quickly
by releasing the spring catches on both
sides of the harness.
In an emergency, you may slip out of the
harness and throw off the machine
quickly by first releasing the lap belt on machines that are so equipped and then lifting the tabs of the two sliding
harness adjusters to slacken the shoulder straps. Try this procedure a number
of times before using the machine in
order to become accustomed with it.
Pay attention to the direction of the wind,
i.e., do not work against the wind.
To reduce the risk of stumbling and loss
of control, do not walk backward while
operating the machine.
Pay attention to the direction of the wind,
i.e. do not work against the wind. Do not
direct air blast towards bystanders.
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The mistblower may be used only for the
operations described in your manual.
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Exercise extreme caution when handling
chemicals. Follow all safety precautions
and instructions laid down by the manufacturer. Avoid contact with chemicals
and chemical solutions. Be sure the mistblower is the proper tool for the job.
:DUQLQJ
Do not spray flammable liquids; such as
gasoline or paint thinner. Such substances create a risk of fire or explosion and
may damage the mistblower. Do not
spray caustic or acid solutions. Contact
with such substances may cause
serious or fatal injury or damage the property, including the mistblower.
:DUQLQJ
When spraying, stand so that the wind
blows the spray away from you and bystanders. Keep children and pets away
from areas that have just been sprayed.
:DUQLQJ
Always empty and clean the liquid container after each use. 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). It is best to fill the container with clean water and let it drain
out with the tap open. Be cautious where
you drain the liquid during the cleaning
process.
Never store liquid in the container for
more than one day.
8VHRIWKH0LVWEORZHU
The mistblower can be used for spraying
chemicals an liquids to control pests and
weeds in fruit and vegetables gardens,
on trees and bushes, citrus, coffee,
tobacco, cotton and many other areas.
It is also useful in the maintenance of
young trees, controlling the bark beetle
and other plant diseases.
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To reduce the risk of contaminating the
surrounding environment, be careful not
to overfill the container with chemical
solution.
If you fill the container with a hose
attached to a water pipe be sure the end
of the hose is out of the solution to
reduce the risk of chemicals being
sucked into the water pipe in the case of
a sudden vacuum.
Calculate the correct amount of chemical solution so that it is used up at one
time.
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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 in the appropriate section of
your owner’s manual. Refer to the
maintenance chart at the end of this
manual.
:DUQLQJ
Always stop the engine and make sure
that the fan is stopped before doing any
maintenance or repair work or cleaning
the mistblower. 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.
Check fuel filler cap for leaks at regular
intervals. Use the specified spark plug
and make sure it and the ignition lead
are always in good condition.
:DUQLQJ
A worn or damaged muffler is a fire
hazard and may cause loss of hearing.
Check to see that the muffler is in good
condition. The mistblower must not be
operated if the muffler is not functioning
properly or has been removed.
Remember that the risk of forest fires is
greater in hot weather. Use the spark
arresting muffler supplied with the unit.
Never touch a hot muffler or burn will
result.
:DUQLQJ
In order to reduce the risk of fire, do not
modify or remove any part of the muffler
or spark arrestor.
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 if necessary. Fit a new spark
plug if the electrodes are badly pitted.
For any maintenance please refer to the
maintenance chart DQGWRWKHZDUUDQW\
VWDWHPHQW near the end of this manual.
Store mistblower in a dry, high or locked
location place and out of reach of
children.
Before storing for longer than a few
days, always empty the fuel tank.
Assembly of Unit
The unit is partly disassembled for ease of shipment and
must be completely assembled before it is used for the
first time.
The tools on the underside of the unit (1 combination
wrench and 1 carburetor screwdriver) should be used for
the assembly work.
Mounting the elbow
- Line up the stops on the elbow (1) and fan housing
stub (2).
- Push the elbow (1) into the stub (2) as far as it will go.
- Fit a nut (3) into each of the molded hexagon seats on
the stub.
- Insert a screw (4) into each nut from the other side and
tighten moderately (it must still be possible to turn the
elbow).
Important: The throttle cable with integrated stop switch
wire is already connected to the control handle and the
engine and must not be kinked during assembly.
Top: Ellbow fitted to fan housing
Center: Spraying attachment fitted
Bottom: Stop cock lever in vertical position
- Attach throttle cable with the retainer (5) to the pleated
hose.
Mounting the spraying attachment
Insert extension tube (12) into the pleated hose (7) as far
as it will go.
- Rotate the pleated hose (7) to the left
(counterclockwise) as far as the stop and leave it in
that position until you have completed the following
adjustments.
- Rotate the control handle (10) to the left (counterclockwise)
until it is horizontal.
- Rotate the extension tube 12 to the left (counterclockwise)
until the metering unit (13) points in the same direction as
the control handle.
- Tighten the clamp screw (11). (Observe instructions in
chapter "Adjusting the control handle")
- Push the free end of the liquid hose (14) over the stub on
the stop cock (15) and secure in position with the hose clip
(16).
- Secure liquid hose to the pleated hose with the retainer (5).
- Close the stop cock (move lever to vertical position).
Fill up with spray mix and check all hose connections for
leaks.
12
The pivot-mounted pleated hose allows the blower tube
or spraying attachment to be rotated about 90° to the left
or right (i.e. counterclockwise or clockwise) from the
center position (control handle vertical).
Adjusting the control handle
You can adjust the position of the control handle on the
pleated hose to suit your reach.
Carry out the adjustment as follows:
- Put the unit on your back.
- Release the clamp screw (11).
- Slide the control handle along the pleated hose to the
most comfortable position.
- Retighten the clamp screw (11).
Top: Range of rotation of tube
Center: Range of adjustment of control handle
Bottom: Pulling ends of straps downward (left)
Lifting tabs of strap adjusters (right)
Adjusting the harness straps
The harness straps are attached to the backplate and
have sliding adjusters for adjustment to any required
length.
Pull the ends of the straps downward to tighten the
backplate against your back. Lift the tabs of the two sliding
adjusters to slacken the harness straps.
Adjust the straps so that the backplate is held firmly and
securely against your back.
13
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