STIHL MS 660 MAGNUM manual Air Filter System

Chain	Chain pitch	Minimum
type		groove depth
Picco	1/4" P	0.16" (4.0 mm)
Rapid	1/4"	0.16" (4.0 mm)
Picco	3/8" P	0.20" (5.0 mm)
Rapid	3/8"; 0.325"	0.24" (6.0 mm)
Rapid	0.404"	0.28" (7.0 mm)

If groove depth is less than specified:

NReplace the guide bar.

Air Filter System

The air filter system can be adapted to different operating conditions by the insertion of different air filters. Retrofitting is simple.

English

Fouled air filters will impair engine performance, increase fuel consumption and make the machine more difficult to start.

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.

001BA210 KN

NHD2-Filter (black filter frame. folded filter fabric) Universal filter for almost all conditions of use (from very dusty to wintry conditions etc.)

001BA212 KN

NWire mesh filter (green filter housing) Use in extra-ordinary conditions e.g. extremely wintry conditions of use - such as powder snow or drift snow. Rather unsuitable in very dusty conditions.

When dry, STIHL filters attain a long service life.

NAlways use STIHL filters dry

MS 660 39