44
English / USA
MS 270, MS 270 C, MS 280, MS 280 C
If groove depth is less than specified:
: Replace the guide bar.
The drive link tangs will otherwise
scrape along the bottom of the groove –
the cutters and tie straps will not ride on
the bar rails.
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 knob (1) above the rear
handle 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.
Chain
type
Pitch Minimum
groove
depth
Picco 3/8“ P 0.20"
(5.0 mm)
Rapid 1/4“ 0.16"
(4.0 mm)
Rapid 3/8“; 0.325“ 0.24"
(6.0 mm)
Rapid 0.404“ 0.28"
(7.0 mm)
Air Filter System Cleaning the Air Filter
1
146BA010 KN
2