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Stihl MS 261 C-M User Manual

Stihl MS 261 C-M
120 pages
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STIHL MS 261 C-M
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WARNING
To reduce the risk of kickback injury
use STIHL reduced kickback bar and
STIHL 26 RM3 (.325") chain depending on
sprocket pitch or other available low kickback
components.
ADVERTENCIA
Para reducir el riesgo de lesionarse
como resultado de un culatazo, utilice
la barra de contragolpe reducido y la cadena
26 RM3 (.325 pulg) de STIHL, dependiendo
de la rueda dentada usada y de otros
componentes reductores de contragolpe.
Read and follow all safety precautions in
Instruction Manual – improper use can cause
serious or fatal injury.
Lea y siga todas las precauciones de
seguridad dadas en el manual de
instrucciones – el uso incorrecto puede causar
lesiones graves o mortales.
All manuals and user guides at all-guides.com
all-guides.com
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Stihl MS 261 C-M Specifications

General IconGeneral
Idle speed2800 RPM
Motor type2-stroke motor
Chain pitch1/325 \
Blade length450 mm
Product colorBlack, Grey, Orange
Motor speed (max)10000 RPM
Oil tank capacity0.27 L
Fuel tank capacity0.5 L
Engine displacement50.2 cm³
Kickback protectionYes
Engine power4.1 hp
Power sourceGasoline
Sound power level116 dB
Vibration emission3.5 m/s²
Sound pressure level104 dB
Weight and Dimensions IconWeight and Dimensions
Weight4900 g

Summary

Guide to Using This Manual

Pictograms

Describes graphical symbols used in the manual.

Symbols in Text

Explains textual symbols and indicators.

Engineering Improvements

Notes on product evolution and design.

Safety Precautions and Working Techniques

The Use of the Power Tool

Transporting the Power Tool

Safe carrying instructions for the tool.

Fuel

Information regarding the fuel system.

Fueling

Preparations

Steps before fueling the chainsaw.

Opening

Procedure for opening the fuel cap.

Refueling

Instructions for filling the fuel tank.

Operating Instructions

Reactive Forces Including Kickback

Devices for Reducing the Risk of Kickback Injury

STIHL Quickstop Chain Brake

Describes the chain brake system.

Low Kickback Saw Chain and Reduced Kickback Bars

Discusses low kickback components.

Reduced Kickback Bars

Details on specific kickback-reducing bars.

Bow Guides

Information about bow guides.

Cutting Techniques

Felling

Procedures for felling trees.

Conventional Cut

Buttress Roots

Cutting techniques for large roots.

Open-face Technique

An alternative felling method.

Bucking

Liming

Removing branches during felling.

When cutting small logs

Handling small logs.

Spark Plug

Checking the Spark Plug

Procedure for inspecting the spark plug.

Installing the Spark Plug

Guide for re-installing the spark plug.

Cutting Attachment

Chain scabbard

Description of the chain cover.

Fitting chain scabbard extension

How to attach an extension.

Mounting the Bar and Chain

Disengaging the chain brake

Steps to release the chain brake.

Fitting the chain

Instructions for installing the saw chain.

Tensioning the Chain

Checking Chain Tension

Verifying the chain's tension.

Fuel

Information about the fuel system.

Chain Lubricant

Filling Chain Oil Tank

Procedure for filling the oil reservoir.

Chain Brake

Locking chain with chain brake

How to engage the chain brake.

Check operation of chain brake

Verifying brake functionality.

Chain brake maintenance

Winter Operation

Preheating the carburetor

Preparing the carburetor for cold weather.

Fitting the cover plate

Installing the winter cover plate.

Electric Handle Heating

Information on the handle heating system.

Starting / Stopping the Engine

Positions of the Master Control lever

Understanding the lever's states.

Adjusting the Master Control lever

On the ground

Procedures for starting on the ground.

Once the engine is running

At very low temperatures

Operating in extreme cold.

Switching off the engine

Procedure to stop the engine.

Operating Instructions

During the break-in period

Guidelines for initial use.

During work

General operational advice.

Check chain tension frequently

Importance of regular tension checks.

After finishing work

Short-term storage

Brief storage guidelines.

Long-term storage

Extended storage instructions.

Oil Quantity Control

Taking Care of the Guide Bar

Maintenance of the guide bar.

Shroud

Removing the Shroud

Procedure for detaching the shroud.

Installing the shroud

Procedure for attaching the shroud.

Cleaning the Air Filter

Engine Management

M-Tronic

Details on the M-Tronic system.

Spark Arresting Screen in Muffler

Spark Plug

Information about the spark plug.

Rewind Starter

Checking and Replacing the Chain Sprocket

Fit new chain sprocket

Process for installing a new sprocket.

Maintaining and Sharpening the Saw Chain

Sharpening and side plate angles

Angles for sharpening cutters.

File holder

Description of the sharpening file holder.

Proper sharpening

Correct techniques for sharpening.

To check the angles

How to verify sharpening angles.

Adjusting depth gauge

Affilated correct

Correct filing procedure.

Adjusting calibrator of depth

Setting the depth gauge.

Sharpening tools (special accessories)

Maintenance and Care

Cutting Attachment

Chain scabbard

Description of the chain cover.

Fitting chain scabbard extension

How to attach an extension.

Mounting the Bar and Chain

Disengaging the chain brake

Steps to release the chain brake.

Fitting the chain

Instructions for installing the saw chain.

Tensioning the Chain

Checking Chain Tension

Verifying the chain's tension.

Fuel

Information about the fuel system.

Reactive Forces, including Kickback

Kickback

Explanation of kickback forces.

Chain of low kickback saw and low kickback bar

STIHL's Quickstop chain brake

Describes the chain brake system.

Common types of low kickback saws

Types of low kickback saws.

To avoid kickback

To avoid pullback

Preventing pullback.

To avoid pushback

Preventing pushback.

Escape Path

Buttress Roots

Cutting techniques for large roots.

Conventional Cut

Standard cutting method.

Free-face Technique

For cutting branches

Cutting branches.

Cut = D

Specific cut type.

E = Inclination Axis

Plunge-cut method

Sectioning Method

Method for sectioning.

Bucking

Logs under strain

Maintenance, Repair, and Disposal

Disposal

Proper disposal instructions.

Information for maintenance

Components Important

Definitions

Specifications

Special Accessories

Repair Information

Warranty Coverage

Trademarks

Trademarks