Oil Quantity Control; Taking Care Of The Guide Bar - Stihl MS 261 C-MQ Instruction Manual

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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.
40

Taking Care of the Guide Bar

2
1
Turn the guide bar over – every time
N
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),
N
the oilway (2) and the bar groove
(3).
Measure the groove depth – with the
N
scale on the filing gauge (special
accessory) – in the area used most
for cutting.
Chain Chain pitch
type
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.
N
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
Minimum
groove depth
0.16" (4.0 mm)
0.16" (4.0 mm)
0.20" (5.0 mm)
0.24" (6.0 mm)
0.28" (7.0 mm)
MS 261 C-MQ