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

MS 661 C-M
English
49
Maintenance and Care
The following information applies in normal operating conditions. The specified inter
-
vals must be shortened accordingly when working for longer than normal or under
difficult cutting conditions (extensive dust, highly resinous lumber, lumber from trop
-
ical trees, etc.). If the machine is only used occasionally, the intervals can be
extended accordingly.
Before starting work At the end of work and/or daily Whenever tank is refilled Weekly Monthly Yearly If faulty If damaged As required
Complete machine
Visual inspection (condition, leaks) XX
Clean X
Throttle trigger, throttle trigger lockout,
choke lever, choke control, stop switch,
master control lever (dependent on
equipment)
Function tests XX
Chain brake
Function tests XX
Have checked by a specialist dealer
1)
X
Manual fuel pump (if present)
Check X
Have repaired by a specialist dealer
1)
X
Fuel pick-up body / filter in fuel tank
Check X
Clean, replace filter insert XX
Replace XXX
Fuel tank Clean X
Lubricating oil tank Clean X
Chain lubrication Check X
Saw chain
Check, pay attention to sharpness XX
Check chain tension XX
Sharpen X
Guide bar
Check (wear, damage) X
Clean and turn over X
Deburr X
Replace XX
Chain sprocket Check X

Stihl MS 661 C-M Specifications

General

Idle speed	- RPM
Motor type	2-stroke motor
Chain pitch	3/8 \
Blade length	800 mm
Product color	Black, Grey, Orange
Automatic oiling	Yes
Engine displacement	91.1 cm³
Power source	Gasoline
Sound power level	118 dB
Vibration emission	6.9 m/s²
Sound pressure level	105 dB

Weight and Dimensions

Weight	7400 g