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19 Taking Care of the Guide Bar
Use the adjusting screw (1) (on underside of
machine) to vary the oil feed rate as required.
Ematic position (E), medium oil flow rate –
► turn the adjusting screw to "E" (Ematic posi‐
tion).
To increase oil feed –
► turn the adjusting screw clockwise.
Turn reduce oil feed –
► turn the adjusting screw counterclockwise.
NOTICE
The chain must always be wetted with a film of
lubricant.
19 Taking Care of the Guide
Bar
2
► Turn the guide 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 oil‐
way (2) and the bar groove (3)
► Measure the groove depth – with the scale on
the filing gauge (special accessory) – in the
area used most for cutting
Chain type
Chain pitch
Picco
1/4" P
Rapid
1/4"
Picco
3/8" P
Rapid
3/8"; 0.325"
Rapid
0.404"
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.
0458-550-0121-B
The air filter system can be adapted to different
operating conditions by the insertion of different
air filters. Retrofitting is simple.
► HD2-Filter (black filter frame. folded filter fab‐
1
3
► Wire mesh filter (green filter housing) Use in
When dry, STIHL filters attain a long service life.
► Always use STIHL filters dry
Fouled air filters will impair engine performance,
increase fuel consumption and make the
machine more difficult to start.
Minimum
groove
depth
4.0 mm
4.0 mm
5.0 mm
6.0 mm
7.0 mm
20 Air Filter System
ric) Universal filter for almost all conditions of
use (from very dusty to wintry conditions etc.)
extra-ordinary conditions e.g. extremely wintry
conditions of use - such as powder snow or
drift snow. Rather unsuitable in very dusty
conditions.
21 Remove Air Filter
English
29
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