Stihl MS 171 Technical Information

Technical Information 27.2013 Page 5
TI_27_2013_30_01_01.fm
4. Muffler
The previous mufflers are replaced by new mufflers.
The inner structure of the mufflers is changed.
Spare parts/service notes
The new mufflers can also be used for older
machines.
The previous mufflers are no longer available as a
spare part.
4.1 Summary – mufflers
Previous New
MS 171 1139 140 0601 1139 140 0610
MS 181, 211 1139 140 0603 1139 140 0608
Item Part Name Previous New Rem.
1 Muffler (MS 171) 1139 140 0601 1139 140 0610 1) 2)
2 Muffler (MS 181, 211) 1139 140 0603 1139 140 0608 1) 2)
Modification to be introduced : continuously
Remarks
1) Previous version of part no longer available from factory
2) New version of part can also be used for older machines

Stihl MS 171 Specifications

General

Idle speed	- RPM
Motor type	2-stroke motor
Chain pitch	3/8 \
Blade length	350 mm
Product color	Black, Grey, Orange
Chain tensioner	Yes
Motor speed (max)	10000 RPM
Fuel tank capacity	0.266 L
Engine displacement	31.8 cm³
Power source	Gasoline
Sound power level	112 dB
Vibration emission	4.5 m/s²
Sound pressure level	99 dB