10
ON
OFF
BEFORE SPRAYING
Check the wind speed and direction (below 5 kph) is safest. Take special care to
avoid drift by keeping the spray head as low as possible. Never
spray into the wind
and avoid walking into the spray. Always
keep the spray head at least 60cm from
any part of the body to avoid direct contamination by the spray.
Before spraying for the first time use water only to check the spray pattern produced.
Put some clean water in the tank and add a small amount of detergent. Check for
leaks. Switch on the sprayer and then
open the flow valve. Spray on one spot, pref-
erably on clean dry concrete, for around 30 seconds with the spray head held about
20cm above the ground; a wet ring 1.2m wide should appear on the ground. Practice
using the sprayer by walking along a few metres and then stopping spraying (see ‘TO
STOP SPRAYING’).
N.B. To help aid the balance of the sprayer, while using the 2
1
/
2
L Bottle, a Shoulder
strap is provided.
TO START SPRAYING
Hold the spray head about 20cm above the ground or weed foliage. Switch on the
sprayer, check the atomiser disc starts spinning (never
touch the atomiser disc when
spinning or hold the spray head too close to the operator) and then
open the flow
valve. Start walking immediately the spray liquid reaches the feed nozzle. N.B. with
the HERBI 4 Extra both flow valves must be opened.
The HERBI 4 is normally held at an angle of around 35
o
to 40
o
to the ground with the
head inclined slightly away from the operator. Do not
spray with the HERBI 4 held
on the shoulder, since spray may contaminate the operator. N.B. the machine will not
spray with the spray head above the level of liquid in the tank.
30 - 40
o
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