Stihl 088 - Fuel System; Air Filter Service

STIHL 088 47
10. FUEL SYSTEM
10.1 Air Filter
Dirty and clogged air filters reduce
engine power, increase fuel con-
sumption and make starting more
difficult.
The air filter should always be
cleaned when engine power
begins to drop off.
- Wash the filter in a fresh, non-
flammable cleaning solution (e.g.
warm soapy water) and, if possi-
ble, blow out with compressed air.
Soften encrusted dirt by soaking
the filter in cleaning solution.
- Always replace a damaged air
filter.
HD filter (special accessory)
• Pull off the felt prefilter.
- Wash prefilter mesh in a fresh,
non-flammable cleaning solution
(e.g. warm soapy water) and, if
possible, blow out with compressed
air. Soften encrusted dirt by
soaking element in cleaning
solution.
- Always replace a damaged
prefilter.
- Impregnate filter element with
special filter oil - see 11.2.
- Fit felt prefilter over the HD filter.
• Unscrew the twist lock (1).
• Remove the carburetor box
cover (2).
• Unscrew the collar nuts (1).
• Pull off the flange (2).
• Remove the air filter.
• Remove the filter base.
• The word "TOP" must face up.
Reassemble in the reverse
sequence.