Stihl SR 440 Instruction Manual page 51

2)
Fitting the strainer
The strainer supplied must always be
fitted when the ULV metering knob is
used.
Push the strainer into its seat until it
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snaps into position.
Removing
Pry the strainer out of its seat – as
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shown.
2)
included with ULV metering knob
SR 440
Metering knob
1
2
Rotate the metering knob (1) for
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infinitely variable discharge rate
Position 1 = minimum flow rate
Position 6 = maximum flow rate
The numbers on the metering knob must
be lined up with the lug (2) under the
knob.
The "E" position on the ULV metering
knob is used for emptying the solution
container. Do not use this position for
spraying – see "After Finishing Work".
Discharge rate
The discharge rate (l/min) depends on
the metering knob setting and the spray
tube angle.
Discharge rate (l/min) without pressure
pump
Spray tube angle
Knob setting - 30°
1 0.12 0.11
2 0.16 0.14
3 1.70 1.50
4 2.48 2.34
5 3.20 2.66
6 3.73 3.28
Discharge rate (l/min) without pressure
pump, with ULV nozzle
Spray tube angle
Knob setting - 30°
0.5 0.05 0.04
0.65 0.08 0.08
0.8 0.13 0.12
Checking flow rate
Place the unit on the ground.
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Fill the container with water up to
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10 liter mark.
Machines without pressure pump
Set the standard metering knob to 6.
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Start the machine.
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Hold the spray tube horizontally, run
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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 between 110 and
150 seconds.
English
0° + 30°
0.07
0.11
1.25
1.90
2.34
2.83
0° + 30°
0.04
0.07
0.10
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