Operation Manual
45MS 361 C
English / USA
The air filter system can be adapted to 
suit different operating conditions by 
simply installing a choice of filters.
Fabric filter*
For normal operating conditions and 
winter operation.
Fleece filter (non-woven)*
For dry and very dusty work areas.
* see “Guide to Using this Manual“
If there is a noticeable loss of engine 
power
: Loosen the twist lock (1) in the 
direction of the arrow.
: Remove the carburetor box 
cover (2).
: Clean away loose dirt from around 
the filter.
: Remove the filter. 
: Knock the filter out on the palm of 
your hand or blow it clear with 
compressed air from the inside 
outwards.
In case of stubborn dirt:
: Wash the filter components in 
STIHL universal cleaner or a clean, 
non-flammable solution (e.g. warm 
soapy water) and then dry. 
Do not use a brush to clean the fleece 
filter.
: Always replace damaged filters.
: Locate the filter (3) in position (see 
arrows).
: Fit the carburetor box cover.
Air Filter System Cleaning the Air Filter
1
213BA009 KN
2










