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Manafacture: Stihl File size: 2.92 mb File name: Language of manual:

This avoids unnecessary high loads during the break-in period. As all moving parts have to bed in during the break-in period, the frictional resistances in the engine are greater during this period. The engine develops its maximum power after about 5 to 15 tank fillings. During Operation After a long period of full throttle operation, allow the engine to run for a short while at idle speed so that engine heat can be dissipated by the flow of cooling air. This protects engine- mounted components (ignition, carburetor) from thermal overload. After Finishing Work Storing for a short period: Wait for the engine to cool down. Empty the fuel tank and keep the machine in a dry place, well away from sources of ignition, until you need it again. For longer out-ofservice perionds – see "Storing the Machine". Metering Unit Valve lever A 1 B 0002BA061 KN 1 Solution feed is started and stopped with the valve lever (1). N Position A (valve lever vertical, up) – open N Position B (valve lever horizontal, down) – closed Metering knobs The scope of supply includes metering knobs which allow a wide range of different discharge rates. SR 430, SR 450 SR 430, SR 450 English 21 – Standard metering knob (A) with positions 1 to 5 – Fine metering knob (B) with positions 1.0 to 2.3 – ULV metering knob 1) (C) with positions 0.5 to 0.8 Changing the metering knob N Pull the existing metering knob up and out of its seat. N Push the new metering knob into its seat as far as stop. Fitting the strainer 2) The strainer supplied must always be fitted when the ULV metering knob is used. N Push the strainer into its seat until it snaps into position. Removing N Pry the strainer out of its seat – as shown. Adjusting the discharge rate N Turn the metering knob (2) on the nozzle (3) to obtain the required discharge rate – see tables. The numbers on the metering knob must be lined up with the lug (4) under the knob. Position "E" is used for emptying the container. Do not use this position for spraying – see "After Finishing Work". Machines with pressure pump (special accessory) On machines with a pressure pump, use only the supplied "fine" metering knob with settings 1.0 to 2.3 or the ULV metering knob with settings 0.5 to 0.8. Discharge rate without pressure pump Spray tube 0° to -30° to the horizontal 1) Included in the scope of supply or available as a special accessory - depending on market 0002BA064KN A B C 0002BA065 KN 2) Included with ULV metering knob SR 430 SR 450 0002BA067 KN 0002BA066 KN 3 2 4 0002BA027 KN English "Standard" meterng knob Knob position Discharge rate (l/min) (mean value) 1 0,69 2 1,42 3 1,86 4 2,25 5 2,64 "Fine" meterng knob Knob position Discharge rate (l/min) (mean value) 1.0 0,17 1.8 0,43 2.3 0,76 ULV metering knob Knob position Discharge rate (l/min) (mean value) 0.5 0,05 0.65 0,09 0.8 0,14 Discharge rate with pressure pump (special accessory) Spray tube horizontal (0°) "Fine" meterng knob Knob position Discharge rate (l/min) 1.0 0,66 1.8 1,87 2.3 3,00 ULV metering knob Knob position Discharge rate (l/min) 0.5 0,19 0.65 0,33 0.8 0,48 Checking flow rate N Place the unit on the ground. N Fill the container with water up to 10 liter mark. Machines without pressure pump N Set the "standard" metering knob to "5". N Start the machine. N Hold the spray tube horizontally, run the engine at full throttle, spray the contents of the container down to the 5 liter mark and note the time taken. The time required to spray 5 liters fluid should be betweeen 110 and 140 seconds. Machines with pressure pump (special accessory) N Set the "fine" metering knob to 2.3. N Start the machine. N Hold the spray tube horizontally, run the engine at full throttle, spray the contents of the container down to the 5 liter mark and note the time taken. The time required to spray 5 liters fluid should be betweeen 90 and 120 seconds. In case of deviations: N Check the container, hose system, metering knob and optional pressure pump for cantamination and clean if necessary. N Check blower air intake and clean if necessary. N Check engine setting and correct if necessary. If there is no improvement, contact your dealer for assistance. SR 430, SR 450 English Solution container Dusting and Spreading Mode SR 450 only. Metering lever 0002BA028 KN 1 1 A B 0002BA060 KN 1 NClose valve lever (1) for solution feed. 0002BA052 KN 2 A 0002BA029 KN B N Close the metering lever (2) for dusting and spreading mode. The selected operating mode is indicated by the symbols on the metering unit's housing. N Position A – Mistblowing mode N Position B – Dusting and spreading mode The discharge rate is infinitely variable with the metering lever (1). N Position A (metering lever vertical – feed closed N Position B (metering level parallel to blower tube) – feed open Conversion from mistblowing to dusting and spreading mode N Insert a suitable tool (e.g. screwdriver) in the two recesses N Empty and clean the solution (arrows) to loosen the strainer (1). container – see "After F...

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