Stihl MS 181 User Manual

96 MS 171, MS 181, MS 211
: Push the elbow connector (1)
with fuel hose into fuel hose (2),
making sure the lug engages the
recess (arrow).
The fuel hose (arrow) must be
located in the recess between the
carburetor carrier and engine
housing.
– Reassemble all other parts in the
reverse sequence.
Tightening torques, b 3.5
533RA421 TG
1
2
533RA423 TG
14.9.3 Fuel Hoses, Tank Vent /
Manual Fuel Pump
The fuel hoses for the manual fuel
pump are described in the chapter
on “manual fuel pump”, b 14.8.3
– Remove the carburetor, b 14.3
– Remove the switch shaft, b 12.1
: Pull off the fuel hose (1).
– Remove the tank vent, b 14.8.2
: Pull off and inspect the fuel hose
(1) and replace if necessary.
– Install in the reverse sequence.
533RA424 TG
1
533RA425 TG
1
533RA424 TG
1
: Pull out the connector (1).
: Pry out the grommet (1).
: Inspect the connector (1) and
grommet (2) and replace if
necessary.
– Connector (3) is installed in
machines with a manual fuel
pump.
533RA427 TG
1
533RA392 TG
1
2
3
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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