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Stihl MS 661 C-M Installation, Operation & Maintenance Manual

Stihl MS 661 C-M
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MS 661 C-M
English
39
Varying cutting lengths, types of wood
and work techniques require varying
amounts of oil.
Standard setting
The oil flow can be adjusted as needed
using the adjusting screw (1) (on the
bottom of the machine).
Ematic position (E), medium oil flow –
N Turn adjusting screw to "E" (Ematic
position)
To increase oil flow –
N Turn the adjusting screw clockwise
– adjusting screw is limited by end
stop (2)
To reduce oil flow –
N turn the adjusting screw
counterclockwise
NOTICE
The saw chain must always be coated
with oil.
Setting for increased oil delivery rate
If necessary, the oil flow can be
increased beyond the standard setting.
N Press in end stop (2) using a
suitable tool – end stop is no longer
functional: the oil flow can be
increased further
If the end stop has been pressed in, it
remains in this position.
To increase oil flow –
N turn the adjusting screw clockwise
To reduce oil flow –
N turn the adjusting screw
counterclockwise
In adjustment range a, the oil tank may
run dry before the fuel tank, thus
resulting in the saw chain running dry.
N In adjustment range a, monitor the
chain oil level between refuelings
and add oil if necessary. Always
refill the chain oil tank every time
you refuel.
NOTICE
If an increased oil flow is no longer
required, reset the adjusting screw to the
standard setting.
N 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.
N Regularly clean the oil inlet hole (1),
the oilway (2) and the bar groove
(3).
N Measure the groove depth with the
scale on the filing gauge (special
accessory) – in the area used most
for cutting.
Oil Quantity Control
1
2
1166BA009 AM
1166BA010 AM
1166BA010 AM
Taking Care of the Guide Bar
2
3
1
143BA026 KN

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Stihl MS 661 C-M Specifications

General IconGeneral
Idle speed- RPM
Motor type2-stroke motor
Chain pitch3/8 \
Blade length800 mm
Product colorBlack, Grey, Orange
Automatic oilingYes
Engine displacement91.1 cm³
Power sourceGasoline
Sound power level118 dB
Vibration emission6.9 m/s²
Sound pressure level105 dB
Weight and Dimensions IconWeight and Dimensions
Weight7400 g

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