Name: Stihl MS 251
Brand: Stihl
Rating: 5 (1 reviews)

To Next Page

To Previous Page

7MS 231, MS 231 C, MS 251, MS 251 C

Fastener Thread size For component Torque

Remarks

Screw P 4x12 Pre-separator / engine housing 2.0

Screw P 4x10 Elbow connector / air guide shroud 1.6

M 10x1 Spark plug / cylinder 12.0

Screw D 4x20 Ignition module/cylinder 4.

5 1), 3)

Screw D 5.3x41 Cylinder / engine housing 11.0

Remarks:

1) Screws with binding head

2) Micro-encapsulated screws

3) Waxed 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.

All manuals and user guides at all-guides.com

Other manuals for Stihl MS 251

Questions and Answers:

Need help?

Do you have a question about the Stihl MS 251 and is the answer not in the manual?

General