Stihl MS 661 C-M Instruction Manual

0458-759-8221-C
53
English 22 Inspection and Maintenance
22.1 Inspection and Maintenance Chart
1)
STIHL recommends an authorized STIHL servicing dealer
22 Inspection and Maintenance
The following maintenance intervals are examples and apply for normal
operating conditions. Actual use and your experience will determine the
frequency of required inspection and maintenance.
Before starting work After finishing work or daily Whenever fueling Weekly Monthly Yearly Relevant Chapter
Complete Machine Visual inspection XX
Clean X @ 21.1
Controls Check function and condition XX @ 16.2
Chain Brake Check function X @ 16.1
Chain Oil Tank Clean
1)
XX
Chain Lubrication Check chain oil flow rate X @ 16.3
Fuel Tank Clean
1)
X
Fuel Pick-Up Body / Filter Clean
1)
X
Replace
1)
X
Air Filter Clean X @ 21.3
Saw Chain Check chain tension XX @ 10.3
Sharpen
1)
XXX @ 22.5
Guide Bar Inspect for proper groove depth and
spread
X @ 22.4
Deburr X @ 22.4
Chain Sprocket Inspect X @ 22.4
Chain catcher on sprocket cover Inspect
1)
X
Air intake on fan housing Clean XX
Cylinder fins Clean XX
Spark arresting screen in muffler Check and Clean
1)
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