Chain type
Pitch
Picco
3/8" P
Rapid
1/4"
Rapid
3/8"; 0.325" 0.24"
Rapid
0.404"
If groove depth is less than specified:
N
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.
MS 271, MS 291, MS 291 C
Shroud
Minimum
groove
depth
0.20"
Remove shroud
(5.0 mm)
0.16"
N
Move the Master Control Lever to
(4.0 mm)
the stop position 0
(6.0 mm)
N
Push the front hand guard forwards
– the saw chain is blocked
0.28"
(7.0 mm)
N
Loosen screws (1)
N
Remove the shroud (2)
Refitting the shroud
N
Refit the shroud and tighten the
screws
1
2
1
1
Air Filter System
The air filter system can be adapted to
suit different operating conditions by
installing different filters. Changing the
filter is quick and simple.
Fleece filter
N
Fleece filter for normal operating
conditions and dry work areas.
HD2 filter
N
HD2 filter (black filter frame, pleated
filter material) for extreme wintry
conditions (e.g. powder or drifting
snow) or very dusty work areas.
English
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