Taking Care Of Guide Bar; Air Filter System - Stihl MS 290 Manual De Instrucciones

English / USA

Taking Care of Guide Bar

2
1
: Turn the bar over –
every time you sharpen the chain
and every time you replace the
chain – this helps avoid one-sided
wear, especially at the nose and
underside of the bar.
:
Regularly clean
the oil inlet hole (1),
the oilway (2) and
the bar groove (3).
:
Measure groove depth –
with scale on filing gauge* – in area
used most for cutting.
* see "Guide to Using this Manual"
40
Chain Pitch
type
Picco 3/8" P
Rapid 1/4"
Rapid 3/8"; 0.325" 0.24"
3
Rapid 0.404"
If groove depth is less than specified:
:
Replace the guide bar.
The drive link tangs will otherwise
3 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
Minimum
suit different operating conditions by
groove
simply installing a choice of filters.
depth
0.20"
Fabric filter*
(5.0 mm)
For normal operating conditions and
0.16"
winter operation.
(4.0 mm)
Fleece filter (non-woven)*
(6.0 mm)
For dry and very dusty work areas.
0.28"
(7.0 mm)
* see "Guide to Using this Manual"
MS 290, 310, 390