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

Oil Quantity Control

Adjustable flow oil pump is a special
option.
Different quantities of oil are required for
different bar lengths, types of wood and
cutting techniques.
1
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"
N
(Ematic position).
To increase oil feed –
turn the adjusting screw clockwise.
N
Turn reduce oil feed –
turn the adjusting screw
N
counterclockwise.
NOTICE
The chain must always be wetted with a
film of lubricant.
MS 381

Taking Care of the Guide Bar

2
1
Flip the bar – after each sharpening
N
and each time the chain is changed
– to avoid uneven wear, especially
at the sprocket nose and on the
bottom
Periodically clean the oil inlet
N
hole (1), oil outlet channel (2) and
bar groove (3)
Measure groove depth – using the
N
measuring tool on the file gauge
(special accessory) – in the area
with the greatest wear
Chain type Chain pitch
Picco
Rapid
Picco
Rapid
Rapid
If the groove is not at least this deep:
Replace guide bar
N
Otherwise the drive links will grind
against the base of the groove – the
bottoms of the cutters and the tie straps
will not lie against the bar.
3
English
Minimum
groove depth
1/4" P 4.0 mm
1/4" 4.0 mm
3/8" P 5.0 mm
3/8"; 0.325" 6.0 mm
0.404" 7.0 mm
83