Fuel System; Air Filter; Baffle; Filter Base - Stihl MS 271 Manual

12.

Fuel System

12.1

Air Filter

Dirty air filters reduce engine power,
increase fuel consumption and
make starting more difficult. The air
filter should be checked when there
is a noticeable loss of engine power.
– See also Troubleshooting,
b 3.6, b 3.7
– Remove the shroud, b 6.4
: Rotate the air filter (1)
counterclockwise and lift it away.
– Check the air filter and clean or
replace if necessary
– see instruction manual.
– Reassemble in the reverse
sequence.
80
12.2

Baffle

– Remove the air filter, b 12.1
: Unscrew the nuts (arrows).
1
: Remove the baffle (1).
– Check the baffle and replace it if
necessary
– Reassemble in the reverse
sequence.
12.3

Filter Base

– Remove the air filter, b 12.1
– Remove the baffle, b 12.2
– Remove the choke rod,
b 10.3.3
– Remove the switch shaft, b 10.1
: Push the short circuit wire (1) out
through the opening (arrow).
1
: Pry the filter base (1) out of the
buffer (2).
: Swing the filter base (1) in
direction of throttle trigger until it
is clear of the studs.
2
1
: Turn the filter base (1) in direction
of ignition side.
: Disengage the filter base (1) from
the buffer (2).
– Remove the contact spring,
b 7.7.4
2
1
1
1
MS 271 C, MS 291 C