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STIHL MS 171, 181, 211
Instruction Manual

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Table of Contents
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Summarization of Contents

Guide to Using this Manual
Pictograms
Explains symbols used in the manual and on the machine for clarity.
Symbols in Text
Explains textual symbols like WARNING and NOTICE for safety and machine care.
Engineering Improvements
Notes that design and engineering may be modified periodically without prior notice.
Safety Precautions
General Safety Guidelines
General safety rules, user responsibility, and operating conditions for safe use.
Intended Use
Defines the correct usage of the chainsaw and prohibits unauthorized modifications.
Personal Protective Equipment
Details required personal protective equipment (PPE) for safe chainsaw operation.
Transport Safety
Guidelines and precautions for safely transporting the chainsaw.
Cleaning Precautions
Instructions on how to properly clean the chainsaw, avoiding damage.
Refuelling Safety
Safe practices and precautions to follow when refueling the chainsaw.
Before Starting Work Checks
Essential checks to perform on the chainsaw before commencing operation.
Starting the Chain Saw Safely
Safe procedures and steps for starting the chainsaw.
Reactive Forces
Kickback Dangers
Explains the severe dangers and consequences of chainsaw kickback.
QuickStop Chain Brake
Describes the function and operation of the QuickStop chain brake system.
Reducing Kickback Risk
Provides essential techniques and advice to minimize the risk of kickback.
Pull-in and Pushback Forces
Explains pull-in and pushback reactive forces and how to avoid them.
Working Techniques
Cutting Basics
General advice and fundamental techniques for safe and effective chainsaw cutting.
Cutting Log Types
Techniques for cutting small logs, limbing, and handling tensioned logs.
Tensioned Logs Handling
Specific cautions and techniques when cutting logs that are under tension.
Felling Techniques
Ripping Cut
Detailed explanation of the ripping cut technique and its associated risks.
Felling Preparations
Essential steps and considerations for preparing to fell a tree safely.
Work Area & Notch Preparation
Instructions for clearing the work area and preparing the felling notch.
Felling Notch Details
Specifics on making the felling notch, including angles and depth.
Stump Dimensions
Basic information concerning felling cuts and typical stump dimensions.
Felling Cut - Normal Tree
Small Diameter Trees
Procedure for performing a felling cut on small diameter trees.
Large Diameter Trees
Procedure for performing a felling cut on large diameter trees.
Felling Cut - Leaning Tree
Small Diameter Leaning Trees
Felling cut procedure for small diameter trees that are leaning.
Large Diameter Leaning Trees
Felling cut procedure for large diameter trees that are leaning.
Cutting Attachment
Chain Scabbard
Information regarding the proper use and selection of the chain scabbard.
Mounting Bar & Chain (Side Tensioner)
Steps for mounting the guide bar and chain using the side chain tensioner.
Disengaging Chain Brake
Instructions on how to safely disengage the chain brake.
Fitting the Chain
Step-by-step guide on how to fit the saw chain onto the guide bar.
Mounting Bar & Chain (Quick Tensioner)
Removing Sprocket Cover
Procedure for removing the chain sprocket cover.
Mounting Tensioning Gear
Instructions for mounting the chain tensioning gear.
Removing Tensioning Gear
Steps for removing and reversing the chain tensioning gear.
Tensioning Saw Chain (Side Tensioner)
Retensioning During Cutting
How to safely retension the chain while cutting.
Tensioning Saw Chain (Quick Tensioner)
Retensioning During Cutting
Procedure for retensioning the chain during active cutting.
Checking Chain Tension
Chain Tension Checks
How to check chain tension and retension if necessary.
Fuel
STIHL MotoMix
Information on STIHL's recommended ready-to-use fuel mix.
Mixing Fuel
Guidelines and precautions for mixing fuel and oil correctly.
Gasoline Types
Recommended gasoline types and ethanol content for optimal engine performance.
Engine Oil Recommendations
Guidance on selecting and using appropriate two-stroke engine oils.
Mix Ratio
Specifies the correct fuel-to-oil mix ratio for the engine.
Storing Fuel
Safe storage guidelines for fuel and fuel mixtures.
Fueling
Machine Preparation for Fueling
Steps to prepare the chainsaw before adding fuel.
Tank Cap Markings
Explanation of the markings and symbols on the fuel tank cap.
Fueling Operations
Detailed instructions for opening, filling, and closing the fuel tank.
Checking Fuel Cap Security
How to ensure the fuel cap is correctly and securely fastened.
Fueling Procedures
Comprehensive steps for fuel cap operations, including locking.
Chain Lubricant
Filling Chain Oil Tank
Instructions for filling the chain oil tank with lubricant.
Chain Brake
Locking the Chain
How to engage and activate the chain brake.
Releasing the Chain Brake
Instructions on how to safely disengage the chain brake.
Chain Brake Maintenance
Maintenance intervals and recommendations for the chain brake.
Winter Operation
Winter Slide (MS 211)
Specific instructions for winter operation on the MS 211 model.
Starting / Stopping the Engine
Master Control Lever Positions
Explanation of the different positions of the master control lever.
Adjusting Master Control Lever
How to adjust the master control lever for starting the engine.
Engine Start Positions
Specific lever positions for starting the engine in various conditions.
Releasing Chain Brake
How to release the chain brake after the engine has started.
Cover Plate Installation
Instructions for installing the optional cover plate.
Holding the Chain Saw
Starting On Ground
Correct grip and stance for starting the chainsaw on the ground.
Starting Between Knees/Thighs
Grip and stance for starting the chainsaw between the legs.
Starting Procedures
Standard Version Starting
Step-by-step starting procedures for standard chainsaw models.
ErgoStart Models
Starting procedures specifically for models equipped with ErgoStart.
Fuel Pump Starting
Starting procedures for models that utilize a manual fuel pump.
All Versions Starting
Starting procedures applicable to all chainsaw versions.
Low Temperature Starting
Special procedures for starting the chainsaw at very low temperatures.
Engine Troubleshooting
Engine Not Starting
Troubleshooting steps for a chainsaw engine that fails to start.
Operating Instructions
Break-in Period
Guidelines for the initial break-in period to ensure engine longevity.
During Work
General operating advice and precautions to follow during chainsaw use.
Chain Tension Checks
How and when to check and adjust chain tension for optimal performance.
Chain Cooling Effects
Explains how chain contraction affects tension when cooling down.
Post-Operation Cooling
Procedure for cooling the engine after extended periods of full-throttle operation.
Guide Bar Care
Chain Type & Groove Depth
Table of chain types and required minimum guide bar groove depth.
Groove Depth Check
Method for checking the guide bar groove depth using a measuring tool.
Air Filter System
Filter Types
Description of available air filter types for different operating conditions.
Adjusting Carburetor
Carburetor Settings
General information and standard setting for the carburetor.
Idle Speed Adjustment
Procedures for adjusting the idle speed screw for correct engine idling.
Spark Plug Maintenance
Spark Plug Removal
Step-by-step instructions for removing the spark plug.
Spark Plug Checks
How to check the spark plug, electrode gap, and diagnose issues.
Spark Plug Installation
Instructions for installing the spark plug and connecting the boot.
Saw Chain Maintenance & Sharpening
Sharpened Chain Benefits
Importance of using a properly sharpened saw chain for efficiency and wear.
Chain Pitch Identification
How to identify the chain pitch based on markings on the cutter.
Sharpening Angles
Details on the correct sharpening and side plate angles for saw chains.
File Holder Use
Instructions on how to properly use a file holder for manual chain sharpening.
Proper Sharpening Technique
Best practices and techniques for accurately sharpening the saw chain.
Depth Gauge Setting
How to set and check the depth gauge for optimal cutting performance.
Maintenance and Care Chart
Maintenance Intervals
Table detailing routine maintenance tasks and recommended intervals.
Component Maintenance
Specific maintenance tasks for various components of the chainsaw.
More Component Maintenance
Further maintenance details and checks for additional chainsaw components.
Minimize Wear and Avoid Damage
Maintenance Work Importance
Emphasizes the importance of performing regular maintenance work.
Wear and Tear Parts
Lists common parts subject to normal wear and tear that require replacement.
Specifications
Engine Specifications
Technical details of the chainsaw engine, including displacement and power.
Fuel System Specifications
Specifications for the fuel system, such as tank capacity and carburetor type.
Chain Lubrication Specifications
Details on the oil tank capacity and the automatic oil pump system.
Weight Information
Weight specifications for the different chainsaw models.
Cutting Attachment Specifications
Specifications for guide bars and saw chains, including pitch and groove width.
Noise and Vibration Data
Sound pressure, sound power, and vibration levels according to standards.
REACH Compliance
Information regarding compliance with European chemical substance regulations.

Table of Contents