Stihl MS 171 Manual

73MS 171, MS 181, MS 211
– Push the baffle (1) onto the studs
and position it in the filter base.
: Fit the nuts (arrows) and tighten
them down firmly.
– Reassemble all other parts in the
reverse sequence.
Tightening torques, b 3.5
14.3 Removing and Installing
the Carburetor
– Remove the filter base, b 14.2
– Open the tap cap and drain the
fuel tank. Collect fuel in a clean
container.
Remove the carburetor only when
the tap can is open.
– Remove the handle molding if
necessary, b 12.2
– Disconnect the choke rod,
b 14.6
– Set Master Control lever to “
0“
533RA193 TG
1
Machines with manual fuel pump
: Pull the fuel hose (1) off the stub
(arrow).
: Pull off the carburetor, and pull
stub (arrow) out of fuel hose at
the same time.
– Check the carburetor and repair
or replace if necessary.
Sleeve (1) must be in place.
1
533RA259 TG533RA295 TG533RA238 TG
1
– Push the carburetor into position.
: When pushing the carburetor into
position, check that the stub (1) is
properly seated in the fuel hose
(arrow).
Machines with manual fuel pump
: Push the fuel hose (1) onto the
stub (arrow).
– Attach the choke rod, b 14.6
– Reassemble all other parts in the
reverse sequence.
– Tightening torques, b 3.5
533RA296 TG
1
1
533RA297 TG
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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