Oil Quantity Control; Taking Care Of Guide Bar - Stihl MS 381 Instruction Manual

Oil Quantity
Control *
1
Different quantities of oil are required for
different bar lengths, types of wood and
cutting techniques.
: Use the adjusting screw (1) (on
underside of machine) to vary the
oil feed rate as required.
: E = Ematic position, medium oil flow
rate - turn adjusting screw to "E"
(Ematic position)
: To increase oil feed – turn adjusting
screw clockwise.
: To reduce oil feed – turn adjusting
screw counter-clockwise.
Your chain must always be wetted
with a film of lubricant.
* Special accessory
MS 381

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"
Chain Pitch
type
Picco 3/8" P
Rapid 1/4"
Rapid 3/8"; 0.325" 6.0 mm
Rapid 0.404"
If groove depth is less than specified:
3
: 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.
3
English
Minimum
groove
depth
5.0 mm
4.0 mm
7.0 mm
29