STIHL SG 20 Owner's manual

Brand: STIHL

Model: SG 20

Category: Paint Sprayer

Type: Owner's manual

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STIHL SG 20

Instruction Manual

Original Instruction ManualPrinted on chlorine-free paper

Printing inks contain vegetable oils, paper can be recycled.

0458-408-0121-A. VA1.B13.

0000001190_009_GB

SG 20

English

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with electronic systems.

Contents

Dear Customer,

Thank you for choosing a quality

engineered STIHL product.

It has been built using modern

production techniques and

comprehensive quality assurance.

Every effort has been made to ensure

your satisfaction and troublefree use of

the product.

Please contact your dealer or our sales

company if you have any queries

concerning this product.

Your

Dr. Nikolas Stihl

Guide to Using this Manual 2

Safety Precautions and Working

Techniques 2

Assembling the Unit 6

Harness 6

Filling the Container 7

Spraying 8

Storing the Machine 9

Maintenance and Care 10

Main Parts 11

Specifications 12

Special Accessories 12

Troubleshooting 13

Disposal 14

EC Declaration of Conformity 14

Quality Certification 14

SG 20

English

Pictograms

All the pictograms attached to the

machine are shown and explained in this

manual.

Symbols in text

WARNING

Warning where there is a risk of an

accident or personal injury or serious

damage to property.

NOTICE

Caution where there is a risk of

damaging the machine or its individual

components.

Engineering improvements

STIHL's philosophy is to continually

improve all of its products. For this

reason we may modify the design,

engineering and appearance of our

products periodically.

Therefore, some changes, modifications

and improvements may not be covered

in this manual.

Observe all application local safety

regulations, standards and ordinances.

If you have not used this model before:

Have your dealer or other experienced

user show you how to operate your unit

or attend a special course in its

operation.

Minors should never be allowed to use

this product.

Keep bystanders, especially children,

and animals away from the work area.

When the unit is not in use, put it in a

place where it does not endanger

others. Secure it against unauthorized

use.

The user is responsible for avoiding

injury to third parties or damage to their

property.

Do not lend or rent your unit without the

instruction manual. Be sure that anyone

using it understands the information

contained in this manual.

Do not operate your unit if any of its

components are damaged. It is

particularly important to check the

solution container and hose for leaks.

Pressurize the container only with the

pump mounted to the sprayer.

Operate the sprayer only if it is complete

and properly assembled.

Do not use a pressure washer to clean

the unit. The solid jet of water may

damage parts of the unit.

Physical Condition

To operate the unit you must be rested,

in good physical condition and mental

health.

Do not operate the unit if you are under

the influence of any substance (drugs,

alcohol) which might impair vision,

dexterity or judgment.

Applications

The sprayer is suitable for spraying

chemicals and other liquids to control

pests and weeds. Typical areas of

application are in fruit and vegetable

growing, horticulture, plantations,

grassland and the forestry industry.

Guide to Using this Manual Safety Precautions and

Working Techniques

Special safety precau-

tions must be observed

when working with this

sprayer.

It is important that you

read the instruction man-

ual before first use and

keep it in a safe place for

future reference. Non-

observance of the

instruction manual may

result in serious or even

fatal injury.

SG 20

English

Only use plant protection products that

are specifically approved for use in

sprayers/mistblowers.

Do not use your sprayer for any other

purpose because of the increased risk of

accidents and damage to the sprayer.

Never attempt to modify the product in

any way since this may result in

accidents or damage to the product.

Accessories and Spare Parts

Only use parts and accessories that are

explicitly approved for this sprayer by

STIHL or are technically identical. If you

have any questions in this respect,

consult a servicing dealer. Use only high

quality parts and accessories in order to

avoid the risk of accidents and damage

to the unit.

STIHL recommends the use of genuine

STIHL replacement parts. They are

specifically designed to match the

product and meet your performance

requirements.

Never attempt to modify your unit in any

way since this may increase the risk of

personal injury. STIHL excludes all

liability for personal injury and damage

to property caused while using

unauthorized attachments.

Clothing and Equipment

Wear proper protective clothing and

equipment when using, filling and

cleaning the sprayer. Follow the

chemical manufacturer's instructions

with respect to protective equipment.

Immediately change work clothes

contaminated with plant control

chemicals.

If you are spraying overhead, wear

impermeable head covering.

Do not wear sandals or go barefoot.

Breathing plant control chemicals may

endanger your health. Always wear a

suitable respirator to protect yourself

against health risks and allergic

reactions. Observe warnings in the

directions for use of the plant protection

product and all applicable local safety

regulations, standards and ordinances.

Handling of Chemicals

Read the instructions supplied with the

plant control chemical prior to use.

Follow the instructions with respect to

mixing, using, personal protection

equipment, storage and disposal.

Observe legal requirements for handling

plant control chemicals.

Plant control chemicals may contain

substances that are harmful to humans,

animals, plants and the environment –

risk or poisoning and risk of serious or

fatal injuries!

Plant control chemicals may be used

only by persons trained in their handling

and the appropriate first-aid measures.

Keep instructions or label of the plant

control chemical available at all times in

order to inform the doctor about the

chemical concerned in an emergency. In

an emergency, follow the chemical

manufacturer's instructions provided or

on the label.

Mixing the spray solution

Mix the plant protection product strictly

in accordance with the manufacturer's

instructions – incorrect mixtures may

produce toxic fumes or explosive

solutions.

– Never spray liquid plant control

chemicals undiluted.

– Prepare solution and fill the

container outdoors only or in well-

ventilated locations.

Clothing must be snug-fit-

ting but allow complete

freedom of movement.

For some chemicals it is

necessary to wear imper-

meable coveralls.

Wear impermeable safety

boots with a non-slip sole

which are resistant to

plant control chemicals.

Wear safety glasses.

Wear impermeable

gloves resistant to plant

control chemicals.

SG 20

English

– Only prepare sufficient solution for

the job in hand so that nothing is left

over.

– Mix different chemicals only in

accordance with the manufacturer's

instructions – incorrect mixtures

may produce toxic fumes or

explosive solutions.

– Do not mix different plant protection

products unless such a mixture is

approved by the manufacturer.

Filling the Container

– Stand the sprayer on a level surface

– do not fill the container above the

maximum mark.

– To reduce the risk of injury, do not

fill the unit while wearing it on your

back.

– When filling from central water

supply, do not immerse the end of

the hose in the solution – sudden

low pressure in the system may

cause the solution to be sucked

back into the water supply.

– Before filling the container with

spray solution, carry out test run

with fresh water and check all parts

of the sprayer for leaks.

– After filling, fit the filler cap and

tighten it down firmly.

Application

– Work only in the open or in very well

ventilated locations, e.g. open

greenhouses.

– Do not eat, drink or smoke while

working with plant control

chemicals.

– Never blow through nozzles or other

components by mouth.

– Avoid contact with plant control

chemicals – immediately change

clothing contaminated with plant

control chemical.

– Do not spray in windy conditions.

Too high or too low a pressure or

unfavorable weather conditions can

result in the wrong solution

concentration. Overdosing may damage

plants and the environment. Under-

dosing may result in unsuccessful plant

treatment.

In order to reduce the risk of damage to

the environment and plants, do not

operate the sprayer:

– pressure is too high or too low

– in windy conditions

– at temperatures above 25°C in the

shade

– in direct sunlight

In order to reduce the risk of accidents

and damage to the sprayer, never

operate the sprayer with:

– flammable liquids

– viscous or sticky liquids

– caustic or corrosive chemicals

– liquids hotter than 50°C

Storage

– During work breaks, do not leave

the unit in the hot sun or near any

heat source.

– 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 unit empty and clean. It

must not be under pressure.

– Store the spray solution and sprayer

in a place secured against

unauthorized use.

– Store the spray solution and sprayer

in a dry place protected from frost.

Disposal

Never dispose of residual chemicals or

contaminated rinsing solutions in

waterways, drains, sewers, street

gutters or manholes.

– Dispose of residual plant protection

products and used containers in

accordance with local waste

disposal regulations.

Transporting the Unit

Transporting in a vehicle:

– Properly secure the unit to prevent

turnover and damage.

– The container must be empty and

clean.

SG 20

English

Holding and Controlling the Unit

Carry the unit on your back with both

harness straps – do not hang it over one

shoulder.

Hold the sprayer with your right hand on

the spray gun and your left hand on the

pump handle.

Walk slowly forwards as you work –

observe the nozzle outlet at all times –

do not walk backwards – risk of

stumbling.

Hold the unit upright. To avoid the risk of

chemical leaking from the container and

causing injury,do not bend forwards.

During Operation

Never spray in the direction of

bystanders – risk of injury.

Take special care in slippery conditions

– damp, snow, ice, on slopes or uneven

ground.

Watch out for obstacles: Be careful of

refuse, tree stumps, roots and ditches

which could cause you to trip or stumble.

To reduce the risk of accidents, take a

break in good time to avoid tiredness or

exhaustion.

Work calmly and carefully – in daylight

conditions and only when visibility is

good. Stay alert so as not to endanger

others.

Never work on a ladder or any other

insecure support.

When working in open ground and

gardens take special care to avoid

harming small animals.

To reduce the risk of electrocution,

never work in the vicinity of live wires or

power cables.

Always clean the solution container,

wand and hose system before changing

to a different plant protection product.

After finishing work

Check all parts of the unit for leaks.

After finishing work, throughly clean the

unit and wash your hands, face and, if

necessary, your clothes.

Keep other persons and animals away

from the areas that have been sprayed

and do not walk on them until the plant

protection chemical has dried.

Maintenance and Repairs

Do not attempt any maintenance or

repair work not described in the

instruction manual. Have all other work

performed by a servicing dealer.

STIHL recommends that you have

servicing and repair work carried out

exclusively by an authorized STIHL

servicing dealer. STIHL dealers are

regularly given the opportunity to attend

training courses and are supplied with

the necessary technical information.

Only use high-quality replacement parts

in order to avoid the risk of accidents

and damage to the sprayer. If you have

any questions in this respect, consult a

servicing dealer.

STIHL recommends the use of genuine

STIHL replacement parts. They are

specifically designed to match your

model and meet your performance

requirements.

Always clean and empty the tank and

release pressure in the unit before

carrying our any maintenance or repair

work.

When cleaning the tank, tube and hose

system, make sure that other persons

are not endangered by escaping liquid –

risk of injury.

408BA026 KN

SG 20

English

N Connect the wand (1) to the spray

gun (2).

N Secure the nozzle holder (3) to the

wand (1).

N Mount the hand lever (4) with the

screws (5).

After completing assembly, do a test run

with clean water to check the sprayer for

leaks – do not use the sprayer if it is

leaking.

N Adjust the harness straps so that

the backplate fits snugly and

securely against your back.

Assembling the Unit

408BA027 KN

408BA025 KN

Harness

SG 20

English

Threading the harness straps

Tightening the harness straps

N Pull the ends of the straps

downward.

Loosening the harness

N Lift the tabs of the sliding adjusters.

N Fit the strainer (1).

N Stand the sprayer on a level

surface.

N Fill up with thoroughly mixed spray

solution – do not overfill (no further

than max. mark – arrow).

N Gasket (2) in the cap (3) must

always be well lubricated with

grease and in good condition.

N Fit the cap and tighten it down

firmly.

408BA028 KN

373BA003 KN

373BA004 KN

Filling the Container

SG 20

English

Before Spraying

N Oil the pump piston (1).

N Put the unit on your back.

N Pump the lever (2) slowly and

steadily without operating the spray

gun – continue pumping until the

pressure gauge on the spray gun

shows the correct operating

pressure.

Spraying

N Pull the spray gun's trigger (1).

N Operate the hand lever 3 to 6 times

per minute to maintain a uniform

spray pressure.

N Rotate the nozzle (2) to adjust the

spray pattern.

For continuous operation:

N Pull the trigger.

N Engage the U-clip (3) in direction of

the arrow – the trigger is locked.

Checking flow rate

N Fill solution tank with at least 2 liters

of water.

N Spray the water into a suitable

measuring vessel for exactly 2

minutes at an operating pressure of

2 bar.

N Note the quantity of water sprayed.

The measured quantity of water must be

0.8 liter +/- 10%.

Carry out the test with the nozzle

supplied.

Spraying

Operating pressure for:

Herbicides 1 – 2 bar

Fertilizers 2 – 3 bar

Fungicides 2 – 3 bar

Insecticides 2 – 3 bar

408BA029 KN

SG 20

English

N Empty the tank in a well-ventilated

location.

N Dispose of any residual spray

solution in accordance with

environmental requirements –

follow instructions of the chemical

manufacturer.

N Rinse the tank with clean water.

N Fill the tank with about 5 liters of

clean water, pump and spray until

the tank and hose system are empty

and no longer under pressure. Do

not store the sprayer under

pressure or with spray solution in

the tank.

N After finishing work, clean the

filter (1) in the spray gun.

N Allow the unit to dry with the cap

removed.

N Store the unit in a dry place

protected from frost.

Storing the Machine

408BA030 KN

SG 20

English

Maintenance and Care

The following intervals apply to normal operating conditions only. If your daily working time is

longer or operating conditions are difficult (very dusty work area, etc.), shorten the specified

intervals accordingly.

before starting work

after finishing work or daily

weekly

monthly

every 12 months

if problem

if damaged

if required

Complete machine

Visual inspection (condition, leaks) X

Clean X

Filter in spray gun Clean XX

Tank, pipe and hose system

Drain X

Clean X

Tank, pressure vessel, pipe and hose system Visual inspection (condition, leaks) X

Pump piston Lubricate with oil XX X

Gasket in cap Lubricate with grease XX

Vent in cap Clean X

All accessible screws and nuts Retighten X

Safety labels Replace X

SG 20

English

1 Backplate

2 Pressure vessel

3 Harness

4 Spray gun

5 Filter

6 Pressure gauge

7 Spray wand / lance

8 Nozzle holder with nozzle

9 Cap

10 Vent

11 Gasket

12 Strainer

13 Solution tank

14 Pump

15 Retainer

16 Lever

# Serial number

Main Parts

408BA031 KN

SG 20

English

Dimensions

Weight

Hydraulic Data

REACH

REACH is an EC regulation and stands

for the Registration, Evaluation,

Authorisation and Restriction of

Chemical substances.

For information on compliance with the

REACH regulation (EC) No. 1907/2006

see www.stihl.com/reach.

Pressure valves

Guarantee a constant operating

pressure. Available for 1 bar, 1.5 bar

and 2 bar.

Extension wand

For greater reach. Ideal for spraying

trees.

Telescoping wand

Adjustable spray wand. Extends reach

by up to a meter.

Spraying bell

Confines the jet of spray solution and

reduces spray drift.

Y-nozzle holder

With two adjustable nozzles. Allows

spraying in two directions at the same

time.

Nozzle set

Consisting of two fan jet nozzles and two

hollow cone nozzles with different spray

patterns and flow rates.

Contact your STIHL dealer for more

information on these and other special

accessories.

Specifications

Spray pattern: a = 80 cm

b = 100 cm

Length, approx.: 21 cm

Width, approx.: 40 cm

Height, approx.: 53 cm

Dry weight: 5.2 kg

Flow rate:

0.6 – 0.8 l/min at 1 – 2 bar

0.8 – 1.0 l/min at 2 – 3 bar

Operating pressure: 3 bar

Maximum operating

pressure: 6 bar

Maximum unit pressure: 7 bar

Tank capacity: 18 l

Quantity left in tank: 170 ml

Size of filler strainer mesh: 1 mm

Filter mesh in handle: 0.5 mm

Special Accessories

SG 20

English

Troubleshooting

Before starting any service work, operate the unit until it is no longer under pressure – if pressure is not released, chemical may

escape unexpectedly when working on the hose and pump system.

After servicing, carry out test run with clean water.

Condition Cause Remedy

No spray from nozzle Hose and wand system blocked Rinse and clean all parts of the hose and

wand system with clean water (spray gun,

filter in handle, spray wand, hose)

Water accumulates in pump barrel. Liquid has been stored in the tank for too long Remove the piston from the pump and

lubricate the pump with oil

. Rinse the

tank with clean water after every use

Liquid leaks from top of pump when

pumping.

Worn O-ring on piston Fit new O-ring on piston

Lever falls down under own weight Ball (intake side) is sticking Remove hose from bottom of pump hous-

ing and take out the ball. Clean the ball

and make sure it moves freely

Lever moves upwards of its own

accord

Ball (delivery side) is sticking Open screw plug in the pump housing and

take out the ball. Clean the ball and make

sure it moves freely

Pumping action produces no pressure No suction Fit new O-ring on piston

. Check that

balls in the pump housing and properly

seated and not sticking

STIHL recommends a STIHL servicing dealer.

SG 20

English

Observe all country-specific waste

disposal rules and regulations.

STIHL products must not be thrown in

the garbage can. Take the product,

accessories and packaging to an

approved disposal site for environment-

friendly recycling.

Contact your STIHL servicing dealer for

the latest information on waste disposal.

ANDREAS STIHL AG & Co. KG

Badstr. 115

D-71336 Waiblingen

confirms that the product described

below

conforms to the specifications of

Directive 97/23/EC.

Technical documents deposited at:

ANDREAS STIHL AG & Co. KG

Produktzulassung (Product Licensing)

Done at Waiblingen, 06.02.2013

ANDREAS STIHL AG & Co. KG

Thomas Elsner

Director Group Product Management

All STIHL products comply with the

highest quality standards.

An independent organization has

certified that all products manufactured

by STIHL meet the strict requirements of

the ISO 9001 standard for quality

management systems in terms of

product development, materials

purchasing, production, assembly,

documentation and customer service.

Disposal

000BA073 KN

EC Declaration of Conformity

Category: Sprayer

Make: STIHL

Model: SG 20

Serial identification: 4247

Quality Certification

000BA025 LÄ

SG 20

English

SG 20

English

www.stihl.com

*04584080121A*

0458-408-0121-A

englisch

STIHL SG 20 Owner's manual

Brand: STIHL

Model: SG 20

Category: Paint Sprayer

Type: Owner's manual

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STIHL SG 20 Owner's manual

STIHL SG 20 Owner's manual

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