background image

Store the unit in a dry place protected from

frost.

2.7.4

Disposal

Dispose of plant protection chemicals in accord‐

ance with environmental requirements – follow

instructions of chemical manufacturer.
Never dispose of residual plant protection prod‐

ucts or contaminated rinsing solutions in water‐

ways, drains, sewers, street gutters or manholes.

Dispose of residual chemicals and used con‐

tainers in accordance with local waste dis‐

posal regulations.

2.8

Holding and Controlling the

Unit

0000-GXX-0010-A0 KN

Put the strap over your left shoulder so that the

unit hangs at your side. To ensure the unit can

be quickly thrown off in an emergency, do not

wear the strap across your chest.
Hold the sprayer with your right hand on the

spray gun and your left hand on the pump han‐

dle.
Walk slowly forwards as you work – observe the

nozzle outlet at all times – do not walk back‐

wards – risk of stumbling.
To reduce the risk of spillage and injury, hold the

sprayer upright.

2.9

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 sprayer before changing to a

different plant protection product.

2.10

After Finishing Work

Check all parts of the unit for leaks.
After finishing work, thoroughly 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.

2.11

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 author‐

ized 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

unit. If you have any questions in this respect,

consult a servicing dealer.
STIHL recommends the use of genuine STIHL

replacement parts. They are specifically

2 Safety Precautions and Working Techniques

English

0458-583-0121-B

5

Summary of Contents for SG 21

Page 1: ...SG 21 Instruction Manual 2 13 ...

Page 2: ...ments 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 man ual 2 Safety Precautions and Working Techniques This instruction manual covers a STIHL sprayer which is also referred to as the unit in the descrip...

Page 3: ... change work clothes contaminated with plant control chemicals For some chemicals it is necessary to wear impermeable coveralls If you are spraying overhead wear impermeable head covering Wear impermeable safety boots with a non slip sole which are resistant to plant control chemicals Do not wear sandals or go barefoot Wear impermeable gloves resistant to plant control chemicals WARNING To reduce ...

Page 4: ...produce toxic fumes or explo sive solutions Stand the sprayer on a level surface do not fill the tank above the maximum mark 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 To reduce the risk of injury do not fill the sprayer while carrying it Close the tank ti...

Page 5: ... 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 sprayer before...

Page 6: ... the spray gun 2 3 1 Shoulder Strap Pull the buckle off the shoulder strap 6159BA004 KN Ease the housing outwards and thread the strap through the openings from below 6159BA005 KN Thread the ends of the strap through the buckle 4 Controls Make yourself familiar with how the components function before using your sprayer for the first time 4 1 Pump Locking the pump handle 6159BA006 KN Push the pump ...

Page 7: ...er releases the excess pressure Depressurize the tank 6159BA010 KN Pull the piston manometer up all the way pressure is released wait until tank is com pletely depressurized Pressure must be released before filling the tank after spraying to drain and clean the tank before carrying out maintenance work 4 3 Operating the Spray Gun 0000 GXX 0013 A0 KN Pull the trigger solution flows from nozzle Rele...

Page 8: ...screw the pump from the tank Stand the tank securely on a level surface 0000 GXX 0014 A0 KN Pour thoroughly mixed spray solution through the opening arrow do not exceed maximum capacity check max mark on scale Screw the pump into the tank 7 Spraying 7 1 Visual Inspection Do not operate your unit if any of its components are damaged It is particularly important to check the tank and hose connection...

Page 9: ...ater Fill the tank with clean water pump and spray until the tank is empty and completely depres surized Wipe down the whole unit with a damp cloth 9 Storing the Machine Keep tank and pump separate for drying and storage Dry the unit and store it in a place protected from direct sunlight and frost 10 Inspection and Mainte nance by User 10 1 Pump Removing Unscrew the pump from the tank Hold pump fi...

Page 10: ...otate the pump handle 1 clockwise until gland 2 engages the cylinder barrel Push the pump handle 1 downwards and lock it in position Screw the pump into the tank 10 2 Cleaning the Filter and Nozzle 1 3 0000 GXX 0015 A1 2 Unscrew the hollow cone nozzle 1 with spin ner insert 2 from the wand 0000 GXX 0016 A0 KN Rinse out all parts under running water and then reassemble English 10 Inspection and Mai...

Page 11: ... X X X Piston cup seal Lubricate with grease X X X O ring Lubricate with grease X X Safety labels Replace X 12 Main Parts 5 5 9 6 7 1 2 3 0000 GXX 0017 A1 19 8 4 20 18 10 15 16 11 13 14 17 12 1 Hollow cone nozzle 2 Spinner insert 3 Filter 4 Elbow 5 Union nut 6 Spray wand 7 Spray gun 8 Lever 9 Hose 10 Pump handle 11 Piston rod 12 Latch on pump cylinder 13 Gland 14 O ring 15 Pump barrel 16 Piston cu...

Page 12: ... tank pressure relief valve operates too soon Piston manometer faulty Replace the sprayer 15 Maintenance and Repairs Users of this machine may only carry out the maintenance and service work described in this user manual All other repairs must be carried out by a servicing dealer STIHL recommends that you have servicing and repair work carried out exclusively by an author ized STIHL servicing deal...

Page 13: ...n number 4255 conforms to the relevant specifications of Direc tive 2006 42 EC Technical documents deposited at ANDREAS STIHL AG Co KG Produktzulassung Done at Waiblingen 03 02 2020 ANDREAS STIHL AG Co KG pp Dr Jürgen Hoffmann Director Product Certification Regulatory Affairs 17 EC Declaration of Conformity English 0458 583 0121 B 13 ...

Page 14: ...English 17 EC Declaration of Conformity 14 0458 583 0121 B ...

Page 15: ...17 EC Declaration of Conformity English 0458 583 0121 B 15 ...

Page 16: ...www stihl com 04585830121B 04585830121B 0458 583 0121 B 0458 583 0121 B ...

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