Stihl MS 181 User Manual

59MS 171, MS 181, MS 211
: Use a suitable tool to engage the
anchor loop (2) on the lug (3) –
pull out the loop a little if
necessary.
: Apply tool to openings (arrow) to
push the spring into its seat in the
fan housing.
: Press the installing tool against
the spring and rotate it slightly
clockwise until the spring is
properly seated.
– Remove the installing tool.
533RA221 TG533RA222 TG
Check that the rewind spring (1) is
properly seated and the anchor loop
is engaged on the lug (arrow).
Machines with ErgoStart
The same procedures are used
here as for the standard version.
The differences are the anchor loop
and the installed position of the
spring.
The open side of the anchor loop
(arrow) must face inwards. Then fit
the rewind spring (1) counter-
clockwise.
533RA215 TG
1
533RA216 TG
1
Check that the rewind spring (1) is
properly seated and the anchor loop
is engaged on the lug (arrow).
– Secure the spring so that it
cannot pop out.
– Install the rope rotor, b 10.5
– Install the pawl(s), b 10.3
– Lubricate peg(s) on pawl(s) with
grease, b 16
– Tension the rewind spring,
b 10.7
– Reassemble all other parts in the
reverse sequence.
– Tightening torques, b 3.5
533RA223 TG
1
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Stihl MS 181 Specifications

General

Idle speed	- RPM
Motor type	2-stroke motor
Chain pitch	3/8 \
Blade length	400 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	3.5 m/s²
Sound pressure level	100 dB

Weight and Dimensions

Weight	43004300 g