Taking Care Of The Guide Bar; Cleaning The Air Filter; Tronic - Stihl MS 201 TC-M Instruction Manual

19 Taking Care of the Guide Bar

The oil flow can be adjusted as needed using the
adjusting screw (1) on the top of the machine.
Ematic position (E), medium oil flow –
► Turn adjusting screw to "E" (Ematic position)
To increase oil flow –
► turn the adjusting screw clockwise
To reduce oil flow –
► turn the adjusting screw counterclockwise
NOTICE
The chain must always be coated with oil.
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"
0458-599-0121-C
1
1
3
Minimum
groove
depth
4.0 mm
4.0 mm
5.0 mm
6.0 mm
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.

20 Cleaning the Air Filter

20.1 If there is a noticeable loss of
engine power:
► Turn the twist lock 90° counterclockwise.
► Remove the shroud upwards.
► Remove the air filter upwards.
► Wash the filter in STIHL special cleaner (spe‐
cial accessory) or a clean, non-flammable sol‐
ution (e.g. warm soapy water) and then dry.
NOTICE
Do not clean a fleece filter (option) with a brush.
Always replace a damaged filter.
21 M-Tronic
The chainsaw adjusts itself automatically for opti‐
mum performance during operation. Calibration
enables the saw to be adjusted faster for opti‐
mum performance.
If the outside temperature is below –10°C or the
engine is cold:
English
7.0 mm
21