Stihl SG 20 Bedienungsanleitung

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.

STIH)

STIHL SG 20

BA_U1_86_02.fm Seite 0 Dienstag, 20. Juni 2006 9:57 09

1SG 20

English / USA

BA_SE_186_001_01_02.fmPrinted on chlorine-free paper.

Printing inks contain vegetable oils; paper can be recycled.

0458 408 8621 A. M8. G6. Sä. Printed in Germany

STIHl

Contents

Guide to Using this Manual .............. 2

Safety Precautions and

Working Techniques ......................... 3

Assembling the Sprayer ................. 10

Harness .......................................... 10

Filling the Container ........................ 11

Spraying ......................................... 12

Storing the Machine ........................ 13

Maintenance Chart ......................... 14

Main Parts and Controls ................. 15

Specifications ................................. 16

Special Accessories ....................... 16

Trademarks .................................... 17

English / USA

SG 20

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:

: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:

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.

Caution where there is a risk of

damaging the machine or its

individual components.

Note or hint which is not essential

for using the machine, but may

improve the operator’s under-

standing 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 may refer to

several models with different

features. Components that are not

installed on all models and related

applications are marked with an

asterisk (*). Such components may

be 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 some changes, modifications

and improvements may not be covered

in this manual.

Guide to Using this Manual

3SG 20

English / USA

Because the backpack

sprayer is a 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.

!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.

Have your STIHL dealer show you how

to operate your backpack sprayer.

Observe all applicable federal, state and

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 chemical disposal regulations.

!Warning!

Do not lend or rent your backpack

sprayer without the instruction manual.

Be sure that anyone using it

understands the information contained

in this manual.

!Warning!

The chemicals sprayed with your

backpack sprayer 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.

Use your backpack sprayer 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,

controlling the bark beetle and other

plant diseases.

!Warning!

Do not use it for other purposes, since

misuse may result in personal injury or

property damage, including damage to

the sprayer itself.

!Warning!

Minors should never be allowed to use

this backpack sprayer. Bystanders,

especially children, and animals should

not be allowed in the area where it is in

use. Make sure that unauthorized

persons do not use it.

Most of these safety precautions and

warnings apply to the use of all STIHL

backpack sprayers. Different models

may have different parts and controls.

See the appropriate section of your

instruction manual for a description of

the controls and the function of the parts

of your model.

Safety Precautions and

Working Techniques

English / USA

SG 20

Safe use of a backpack sprayer involves

1. the operator

2. the backpack sprayer

3. the use of the backpack sprayer

4. the handling of the chemicals to be

sprayed.

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 backpack sprayer when you are

fatigued.

!Warning!

Be alert – if you get tired, take a break.

Tiredness may result in loss of

concentration and control. Working with

any backpack sprayer can be strenuous.

If you have any condition that might be

aggravated by strenuous work, check

with your doctor before operating this

backpack sprayer.

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

backpack sprayer. Always follow all of

the chemical manufacturer’s instructions

with respect to proper eye, skin, nose

and mouth protection. They may differ

from and exceed the following

precautions.

!Warning!

To reduce the risk of injury

to your eyes you may

need to wear protective

goggles when operating

your backpack sprayer.

Check the product label

for the chemical you are spraying.

Always wear rubber/

chemical-resistent gloves

when handling the

backpack sprayer.

5SG 20

English / USA

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/chemical-

resistent boots.

!Warning!

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.

!Warning!

Backpack sprayers may usually also be

used in greenhouses that are well

ventilated if the operator can protect

himself or herself from any harmful

effects through the use of proper eye,

skin, nose and mouth protection. Such

work may require special precautions.

THE BACKPACK SPRAYER

For illustrations and definitions of the

backpack sprayer parts see the chapter

on “Main Parts and Controls.”

!Warning!

Never modify this backpack sprayer in

any way. Only attachments supplied by

STIHL or expressly approved by STIHL

for use with the specific STIHL model

are authorized.

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 container system is tight (no leaks)

and that the controls are working

properly. Do not continue operating this

backpack sprayer if it is damaged. In

case of doubt, have it checked by your

STIHL servicing dealer.

!Warning!

Make sure the hose is securely attached

and in good condition before

pressurizing the container. Never

attempt to pressurize the unit by any

other method than with the pump

module provided.

HANDLING OF CHEMICALS

!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

sprayer.

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.

!Warning!

Mix only compatible pesticides. Wrong

mixtures can produce toxic fumes.

English / USA

SG 20

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.

!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 with food or

medicines, and never reuse a chemical

container for any other purpose.

Do not transfer spray materials 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 or animals.

When not in use, store chemicals in a

safe place. Follow the manufacturer’s

recommendations for proper storage.

THE USE OF THE BACKPACK

SPRAYER

Transporting the Backpack

Sprayer

Empty container when transporting it in

a vehicle; properly secure it to prevent

damage to the unit.

Filling the Container

Before using the sprayer with chemicals,

fill it with fresh water to assure that you

have it properly assembled; pressurize it

and practice spraying. Also, check for

any leaks at this time. When thoroughly

familiar with the sprayer operation,

follow normal operating procedures.

Fill your backpack sprayer in well-

ventilated areas, outdoors.

!Warning!

Do not use:

– flammables in the sprayer, which

can explode causing serious or fatal

injury;

– caustic or corrosive materials in the

sprayer, which could result in

damage to the unit;backpack

sprayer

– liquids with a temperature above

120 °F (50 °C) to avoid scalding and

damage to the unit.

7SG 20

English / USA

To fill the backpack sprayer, place it on a

level surface. 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 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

container.

!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 Spraying

!Warning!

Always inspect your sprayer before and

after each use. To reduce the risk of

leakage and skin contact with

chemicals, check that the cap and all

connections are tight, and be sure the

hose is securely attached and in good

condition before pressurizing the

container.

!Warning!

Never use a backpack sprayer that is

damaged or not properly maintained.

!Warning!

Your backpack sprayer is a one-person

tool. Do not allow other persons in the

general work area.

During Operation

Holding and Controlling the

Backpack Sprayer

The backpack sprayer is operated with

the right hand on the trigger valve and

the left hand on the hand lever.

The backpack sprayer is carried as a

backpack.

English / USA

SG 20

!Warning!

Adjust carrying harness to suit your size

before starting work.

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 sprayer filled with

liquid has a significant amount of weight.

Use caution when bending, leaning or

walking.

!Warning

To reduce the risk of injury from loss of

control, never work on a ladder, in a tree

or any other insecure support.

Working conditions

Operate your backpack sprayer only in a

well ventilated area. Operate it under

good visibility and daylight conditions

only. Work carefully.

!Warning!

Inhalation of certain 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 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 spray 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 being sprayed 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.

9SG 20

English / USA

Operating instructions

Never spray in the direction of humans,

animals or property which might be

injured or damaged by spray formula.

!Warning!

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.

Danger!

Your backpack sprayer is

not insulated against

electric shock. To reduce

the risk of electrocution,

never operate this backpack sprayer in

the vicinity of any wires or cables

(power, etc.) which may be carrying

electric current. Do not spray on or near

electrical installations.

After Finishing Work

Always wash 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

backpack sprayer.

!Warning!

Empty, rinse and clean the container

and sprayer 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).

Disposal of contaminated rinse should

be in accordance with applicable

ordinances. Observe the precautionary

instructions of the chemical

manufacturer.

Do not store sprayer under pressure or

with spray solution in the container.

MAINTENANCE, REPAIR AND

STORING

!Warning!

Use only identical STIHL replacement

parts for maintenance and repair. Use of

non-STIHL parts may result in personal

injury or property damage.

Strictly follow the maintenance and

repair instructions in the appropriate

section of your instruction manual.

Please refer to the maintenance chart in

this manual.

!Warning!

Always release pressure in the pump

and the pressure chamber prior to

cleaning or servicing the sprayer. To

release the pressure, keep the trigger

valve depressed without operating the

hand lever until there is no more air or

liquid coming out of the nozzle.

Do not attempt any maintenance or

repair work not described in your

instruction manual. Have such work

performed by your STIHL servicing

dealer only.

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