Stihl MS 650 - Leakage Test

MS 650, MS 660
English
28
HD2 filters and wire mesh filters
– HD2 filter – black filter frame,
pleated filter fabric (left)
– Wire mesh filter – green filter
housing (right)
If there is a noticeable loss of engine
power:
N Knock out the filter or blow it clear
with compressed air from the inside
outwards
In case of stubborn dirt or stuck filter
fabric
N Wash the filter in STIHL special-
purpose cleaner (special
accessory) or a clean, non-
flammable cleaning liquid (e. g.,
warm soapy water) – rinse the filter
from inside to out under a water jet
– do not use high-pressure cleaners
N Dry all filter parts – do not expose to
extreme heat
N Do not oil the filter
Always replace a damaged filter.
N Reinstall filter
HD filter
– HD filter – black filter housing with
felt prefilter
If there is a noticeable loss of engine
power:
N Clean felt prefilter (1)
After repeated cleaning of the felt
prefilter
N Separate the parts of the filter from
one another
N Tap HD filter (2) clean and blow
through compressed air from the
inside outwards
In case of stubborn dirt or stuck filter
fabric
N Wash the filter in STIHL special-
purpose cleaner (special
accessory) or a clean, non-
flammable cleaning liquid (e. g.,
warm soapy water) – rinse the filter
from inside to out under a water jet
– do not use high-pressure cleaners
N Dry all filter parts – do not expose to
extreme heat
N Fit the felt prefilter (1) over the HD
filter (2), note installation position
The felt prefilter protects the HD filter
and increases its service life. Thus it
should be replaced at shorter intervals
than the HD filter.
Always replace a damaged filter.
N Reinstall filter
Cleaning the Air Filter
001BA213 KN
001BA214 KN
2
1
001BA215 KN
001BA216 KN
2
1
001BA217 KN