81MS 231, MS 231 C, MS 251, MS 251 C
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.
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12.2 Baffle
– Remove the air filter, b 12.1
: Unscrew the nuts (arrows).
: 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 choke rod,
b 10.3.3
– Remove the baffle, b 12.2
: Pry the filter base (1) out of the
buffer (2).
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2
2310RA195 TG
1
: Pull the filter base (1) off the
studs (arrows).
: Pull the filter base (1) out of the
buffer (2).
: Pull the short circuit wire (1) and
ground wire (2) out of the
guides (arrows).
– Remove the contact spring,
b 7.7.4
– Remove the switch shaft, b 10.1
– Remove the filter base.
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2
2310RA197 TG
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2
2310RA196 TG
1
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