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) |
If groove depth is less than specified:
NReplace 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.
Air Filter System
The air filter system can be adapted to different operating conditions by the insertion of different air filters. Retrofitting is simple.
001BA210 KN
NHD2 filter (black filter frame, pleated filter fabric) for normal, dry or extremely dusty operating environments
001BA211 KN
NHD air filter (black filter housing) with felt prefilter for normal, dry or very dusty operating environments
English
001BA212 KN
NWire mesh air filter (green filter housing) for extreme winter conditions (e. g., powdered or flying snow or frost formation)
When dry, STIHL filters attain a long service life.
NAlways use STIHL filters dry
Fouled air filters will impair engine performance, increase fuel consumption and make the machine more difficult to start.
MS 441 | 37 |