Related Manuals for Stihl SR 320
Summary of Contents for Stihl SR 320
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Page 2: Table Of Contents
&RQWHQWV Controls Maintenance Chart This Manual contains operating and Safety Precautions Specifications safety instructions for all STIHL SR 320, Assembly of Unit STIHL Incorporated Federal Emission SR 400 mistblowers. Fuel Control Warranty Statement Pay special attention to the safety Fueling precautions outlined on pages 4 to 10. - Page 3 &RQWUROV 1 = Baffle screen 2 = Nozzle 3 = Metering knob 4 = Extension tube 5 = Throttle trigger 6 = Setting lever 7 = Stop switch 8 = Control handle 9 = Stop cock 10 = Pleated hose 11 = Carrying harness 12 = Back plate 13 = Back rest pad...
- Page 4 'HILQLWLRQV %DIIOH VFUHHQ &DUULQJ KDUQHVV )XHO ILOOHU FDS To vary the direction and shape of For carrying the unit. For closing the fuel tank. the spray. %DFN SODWH 6WDUWHU JULS 1R]]OH Helps protect the back of the user. The grip of the pull starter, which is Directs and widens the spray.
- Page 5 Most of these safety precautions and disease (Raynaud‘s phenomenon) or warnings apply to the use of all STIHL carpal tunnel syndrome. These con- mistblowers. Different models may have ditions reduce the hand‘s ability to feel different parts and controls.
- Page 6 ANSI Z 87.1 (or your appli- unauthorized attachment are useable for but allow complete freedom of move- cable national standard). the STIHL mistblower, their use may be ment. Avoid loose-fitting jackets, flared extremely dangerous. or cuffed pants, scarfs, unconfined long...
- Page 7 Relieve fuel tank pressure by In order to reduce risk of This STIHL unit uses an oil-gasoline loosening fuel cap slowly. Never remove fuel spillage and fire, mixture for fuel (see the chapter on fuel filler cap while engine is running.
- Page 8 the unit should be started and operated :DUQLQJ without assistance. Your mistblower pro- duces poisonous exhaust For specific starting instructions, see the fumes as soon as the appropriate section of your owner‘s combustible engine is manual. Place the machine on firm running.
- Page 9 Pay attention to the direction of the wind, :DUQLQJ :DUQLQJ i.e. do not work against the wind. Do not Never insert any foreign object into the When spraying, stand so that the wind direct air blast towards bystanders. air intake of the machine or into the blows the spray away from you and by- nozzle of the mistblower.
- Page 10 Do not attempt any main- tenance or repair work not described in your owner’s manual. Have such work performed at your STIHL service shop only.
- Page 11 :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.
- Page 12 Assembly of Unit Top: Ellbow fitted to fan housing Center: Spraying attachment fitted Bottom: Stop cock lever in vertical position The unit is partly disassembled for ease of shipment and must be completely assembled before it is used for the first time.
- Page 13 - 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...
- Page 14 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) The pivot-mounted pleated hose allows the blower tube or spraying attachment to be rotated about 90° to the left or right (i.e.
- Page 15 This could cause running problems or even damage the engine. For this reason it is essential that you use only name branded fuels! Use only STIHL two-stroke engine oil or equivalent branded two-stroke air- cooled engine oils with the classification TC for mixing.
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Page 16: Fueling
)XHOLQJ Change the fuel pick up body every year. Before fueling, clean the filler cap and the area around it to ensure that no dirt falls into the tank. Before storing your machine for a long period, drain and clean the fuel tank and run engine until carburetor is dry. -
Page 17: Control Handle
Control Handle Top: Control handle with stop switch, throttle trigger and setting lever Center: Setting lever in lower end position Bottom: Stop cock lever The control handle has two functions. It is used to aim the airstream or the spray in the required direction. The controls (stop switch, throttle trigger and setting lever) are used to select the required engine operating condition. -
Page 18: Starting
Starting Top: Throttle trigger and setting lever in "start" position Center: Rotary choke knob in "cold start" position Bottom: Rotary choke knob in "warm start" position Before starting, place the unit on a clear patch of ground. Make sure you have a firm foothold, keep a firm grip on the machine and check that there are no objects which could be sucked in by the fan (between engine and backplate). - Page 19 Top: Starting Center: Setting lever in Lower end position Bottom: Stop switch on "STOP" 2. To start, hold the top of the machine with your left hand and put one foot on the base plate to prevent it slipping. Pull the starter grip slowly with your right hand until you feel it engage and then give it a brisk strong pull.
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Page 20: Air Filter
Apart from minor adjustments, you should leave all carbu- when there is a noticeable loss of engine power. retor setting and repair work to your STIHL dealer. STIHL dealers have trained staff and all the necessary servicing tools and equipment. -
Page 21: Adjusting The Carburetor
$GMXVWLQJ WKH &DUEXUHWRU If you don‘t have a tachometer, do not set the highspeed adjusting screw any leaner by turning it beyond the standard setting. 2SHUDWLRQ DW KLJK DOWLWXGH PRXQWDLQV Slight correction PD\ be necessary. Use a WDFKRPHWHU to set the high speed 0RWRUPDQDJHPHQW adjusting screw + to obtain the highest possible engine speed. -
Page 22: Operating Instructions
2SHUDWLQJ ,QVWUXFWLRQV 6WRULQJ WKH 0DFKLQH 'XULQJ EUHDNLQ SHULRG For periods of about 3 months or longer: • A factory new machine should not be Drain and clean the container. • run at high revs (full throttle off load) for Drain and clean the fuel tank. •... -
Page 23: Checking Spark Plug
To reduce the risk of fire and burn injury, use only spark plugs authorized by If engine is down on power, difficult to STIHL (see “Specifications”). Always start or runs poorly at idling speed, press spark plug boot snugly onto first check the spark plug. - Page 24 5HSODFLQJ 6WDUWHU 5RSH DQG 5HZLQG 6SULQJ • • • Remove the three screws . Remove the spring clip . Ease the cap out of the starter • • Lift the starter cover off Remove the rope rotor with grip.
- Page 25 5HSODFLQJ D EURNHQ UHZLQG VSULQJ • Lubricate the new spring with a few drops of non-resinous oil - • Remove the rope rotor - see "Replacing Starter Rope" - • Remove parts of old spring. • • Thread the rope through the rotor Coat rope rotor bearing bore with and secure it with a simple over- non-resinous oil.
- Page 26 • When starter rope is fully extended it must be possible to rotate the rotor at least another half turn. If this is not the possible, the spring is over- tensioned and could break Take off one turn of the rope. •...
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Page 27: Special Accessories
ULV rotary nozzle kit (SR 320, SR 400) Units equipped with the ULV rotary nozzle are capable of spreading very small quantities of special chemicals. To... -
Page 28: Metering Unit
2.78 (43.9) 3.03 (47.5) The SR 320 and SR 400 should spray 5 liters (1 gal) fluid within 80 to 100 seconds. 2. Spray rate with booster pump (metering knob position 6) If the time required is longer, check the metering unit for contamination and clean it if necessary. -
Page 29: Notes On Use Of Mistblower
Notes on Use of Mistblowers Comparison of principles of backack mistblowers and produce droplets with a size of approx. 50 to 250 pm. The backpack high-pressure sprayers large number of fine droplets and the airstream's excellent penetration of the crop ensure high efficiency. This means that the quantity of carrier liquid (normally water) can be The methods of operation of low-volume mistblowers and reduced, i. - Page 30 • Long horizontal and vertical spraying range. Step 2: • Working time is saved not only during the actual appli- Refer to the instructions for use supplied with the active in cation, but also during the preparations, i.e. less spray gredient to establish the required quantity (usually quoted solution has to be transported to the site and fewer re- for 1 hectare [ha]) and the concentration (mix ratio) of the...
- Page 31 In this case 0.6 litres pesticide would have to be mixed with 600 litres water to make up the spray solution. However, in low-volume mistblowing only one quarter of the water quantity is required for the same amount of pesticide. This means that the concentration used is four times higher than for high-pressure spraying.
- Page 32 Preparations for mistblowing Rule of thumb: Normal length of stride is 0.7 to 0.9 m, but can be up to 1.0 m. Measuring the distance is better than Before starting work it is necessary to determine the follow- counting the number of steps. Dividing the distance in ing points, which affect the liquid discharge rate per unit meters by the time in minutes produces the walking speed area and thus the distribution of active ingredient in the...
- Page 33 They are based on a walking speed of 60 m/min. when the upward angle of the spray tube is increased, e. g. mistblowing high trees. STIHL recommends the use of a pressure pump (special accessory) for applications which require the spray tube to be held at an upward angle of more than 30°.
- Page 35 Use of mistblower be held steady or moved only very slowly to ensure that the spray mist is properly formed and stable. In mistblowing the solution flows from the container, down through the open shut-off cock and the metering nozzle to the spray tube.
- Page 36 Top: Tapered baffle screen Center: Deflector baffle screen Bottom: Dual defector baffle screen In our example the setting of the metering unit would have to be reduced by 17%, from 2.7 to 2.24 I/min. If this is not done, the quantity of solution required would increase 17%, from 54 liters to 63.2 liters.
- Page 37 ULV rotary nozzle (special accessory) 1 acre = 4840 = 0,264 US gal The STIHL ULV nozzle produces droplets with a size of = 2,11 US pt about 50 gym. It enables highly concentrated substances = 33,81 fl.oz to be applied with very little carrier liquid.
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Page 38: Controls 2 Maintenance Chart
Metering unit Check Visual inspection Rubber vibration buffers To be replaced only by STIHL dealer :DUUDQW\ FODLPV IROORZLQJ UHSDLUV The user of this unit should carry out Original STIHL parts can be identified FDQ EH DFFHSWHG RQO\ LI WKH UHSDLU... -
Page 39: Safety Precautions 4 Specifications
Specifications Engine Spraying and Spreading Attachment STIHL single cylinder two-stroke engine Model Airflow Engine SR 320 SR 400 rate/hour velocity speed Displacement: 44.9 cm³ 56.5 cm³ (2.74 cu.in) (3.45 cu.in) SR 320 655 m 92 m/s 6,900 rpm Bore: 41 mm (1.61 in) 46 mm (1.81 in) -
Page 40: Fuel 14 Control Warranty Statement
STIHL service center as soon as a meet the U.S. EPA regulations for small the part will be repaired or replaced by problem exists. - Page 41 Any such work shall be free of Deviations from this recommendation warranty card to STIHL. If any emission charge to the owner if it is determined regarding quality and mixing ratio of fuel related part on your engine is defective, that a warranted part is defective.