Stihl MS 271 Manual

7MS 271 C, MS 291 C
Fastener Thread size For component Torque
Nm
Remarks
Screw P 5x16 Pre-separator / engine housing 3.0
M 14x1.25 Spark plug/cylinder 25.0
Screw D 4x18 Ignition module/engine pan 4.0 2)
Screw D 6x50 Cylinder/engine pan 11.0
Screw D 6x35 Cylinder/engine pan 11.0
Remarks:
1) Loctite 270, high strength
2) Screws with binding head
3) Micro-encapsulated screws
4) Degrease crankshaft/flywheel and mount oil-free
Q) QuickStop Super
B) Quick chain adjuster
Use the following procedure when refitting a DG or P screw in an existing thread:
Place the screw in the hole and rotate it counterclockwise until it drops down slightly.
Tighten the screw clockwise to the specified torque.
This procedure ensures that the screw engages properly in the existing thread and does not form a new thread
and weaken the assembly.
Coat micro-encapsulated screws with medium strength Loctite 242 or 243 before reinstalling.
Power screwdriver setting for polymer: DG and P screws max. 500 rpm
Do not use an impact wrench for releasing or tightening screws.
Do not mix up screws with and without binding heads.

Stihl MS 271 Specifications

General

Motor type	2-stroke motor
Chain gauge	1.6 mm
Chain pitch	3/8 \
Blade length	400 mm
Automatic oiling	Yes
Oil tank capacity	0.24 L
Fuel tank capacity	0.5 L
Engine displacement	55.5 cm³
Engine power	3.8 hp
Power source	Gasoline

Weight and Dimensions

Weight	5600 g