Stihl SR 420 Instruction Manual - Page 27

Cleaning the Air Filter

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English / USA Cleaning the Air Filter Dual deflector baffle screen Splits the spray jet in two - allows two closely planted rows to be treated simultaneously. 1 2 1 43 5 372BA008 KN 373BA017 KN 373BA018 KN Dirty air filters reduce engine power increase fuel consumption and make starting more difficult. If there is a noticeable loss of engine power : Turn choke knob to g : Release the screws (1) and pull off the filter cover (2). : Remove the main filter (3) from the cover and inspect it - if it is dirty or damaged, fit a new one. : Always install a new prefilter when you change the main filter. : Take the prefilter (4) out of the filter cover. : If the prefilter is wet, dry it - then knock it out on the palm of your hand or blow out with compressed air. : Always replace a damaged prefilter. 26 SR 340, SR 420

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26
English / USA
SR 340, SR 420
Dual deflector baffle screen
Splits the spray jet in two – allows two
closely planted rows to be treated
simultaneously.
Dirty air filters reduce engine power
increase fuel consumption and make
starting more difficult.
If there is a noticeable loss of engine
power
:
Turn choke knob to
g
:
Release the screws (
1
) and pull
off the filter cover (
2
).
:
Remove the main filter (
3
)
from the
cover and inspect it –
if it is dirty or damaged, fit a new
one.
:
Always install a new prefilter when
you change the main filter.
:
Take the prefilter (
4
) out of the filter
cover.
:
If the prefilter is wet, dry it – then
knock it out on the palm of your
hand or blow out with compressed
air.
:
Always replace a damaged prefilter.
372BA008 KN
Cleaning the Air Filter
1
373BA017 KN
2
1
373BA018 KN
3
4
5