Stihl 038 - Air Filter

36
Air Filter
The
air
filter’s
function
is
to
intercept
dust
and
dirt
in
the
in-
take
air
and
thus
reduce
wear
on
engine
components.
A
clogged
air
filters
has
a
detrimental
effect
on
engine
per-
formance,
it
increase
fuel
consumption
and
makes
start-
ing
more
difficult.
The air filter must be cleaned when there is a noticeable
loss of engine power.
The carburetor box cover is removed by turning the twist
lock to the left (counterclockwise). Clean exterior of air fil-
ter
and
area
around
it
and
then
use
a
screwdriver
to
un-
screw the two slotted nuts. The two-part air filter assembly
can
now
be
pulled
off
the
studs.
Prise
apart
the
two
halves
of the filter with a screwdriver.
For
the
daily
cleaning
it
will
do,
if
both
filter
parts
and
the
prefilter
in
the
carburetor
box
cover
are
cleaned
with
a
natural
bristle
paint
brush.
To clean the element, first knock it out on the palm of your
hand
and
then
wash
it
in
non-flammable
cleaning
solution
(lukewarm
soapy
water,
engine
cleaner
etc.)
and
blow
out
with compressed air if possible.
If the wire mesh is damaged on either half of the air filter
(or if the flocking is damaged), always fit a new part.
Re-install the air filter in the reverse sequence described
above, making sure that the choke mechanism is not
damaged.
We recommend that you have a spare filter available. A
badly plugged filter should be serviced by your local
dealer.
Top: Releasing slotted nut
Center: Prising apart the two halves of the filter
Bottom: Air filter with choke valve in position