Stihl MS 250 User Manual

Instruction Manual
Manual de instrucciones
STIH)
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.
Warning!
To reduce the risk of kickback injury use
STIHL reduced kickback bar and STIHL PM1,
PMC3 (3/8" Picco) or RM2, RMC3 (0,325")
chain depending on sprocket 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 PM1, PMC3
(Picco de 3/8 pulg) o RM2, RMC3 (0,325 pulg)
de STIHL, dependiendo de la rueda dentada
usada y de otros componentes reductores de
contragolpe.
STIHL MS 210, 230, 250
BA_MS210_86_U_E6.book Seite 0 Dienstag, 2. Mai 2006 11:48 11

Stihl MS 250 Specifications

General

Engine Power	2.3 kW
Power output	2.3 kW
Displacement	45.4 cc
Weight	4.6 kg
Weight (without cutting equipment)	4.6 kg
Fuel Capacity	0.47 l
Fuel tank volume	0.47 l
Bar Length	40 cm
Chain Oil Capacity	0.20 l
Oil Capacity	0.20 l
Chain pitch	3/8"

Summary

Guide to Using this Manual

Some Important Safety Precautions for Chain Saw Users

A. A Summary of Warnings on kickback and other Selected Risks

Details kickback risks and related ANSI standards.

B. Other Safety Precautions

Lists general safety practices for chainsaw users.

THE OPERATOR

Physical Condition

Proper Clothing

THE POWER TOOL

Discusses modifications and condition checks of the chainsaw itself.

THE USE OF THE POWER TOOL

Fuel

Information about the type of fuel to use.

Fueling Instructions

Steps and warnings for refueling the chainsaw.

Before Starting

Starting

There are two recommended methods for starting your chainsaw.

Outlines two primary starting procedures.

Important Adjustments

Holding and controlling the power tool

Proper grip and stance for safe handling.

Reactive forces including kickback

Kickback:

Explains what kickback is and how it occurs.

ANSI B 175.1-2000 chainsaw kickback standard

To comply with section 5.11 of ANSI B 175.1-2000:

Details compliance requirements based on saw displacement.

Devices for reducing the risk of kickback injury

STIHL Quickstop chain brake

Explains the function and importance of the chain brake.

Low kickback saw chain and reduced kickback bars

Please ask your STIHL dealer...

Low kickback chain

Reduced kickback bars

To avoid kickback

A = Pull-in

To avoid pull-in

B = Pushback

To avoid pushback

Cutting Techniques

Felling

Techniques for cutting down trees.

Felling Instructions:

Escape path

Planning safe exit routes during felling.

Conventional cut

Open-face technique

D = Felling cut

E = Hinge

Felling cut for small diameter trees: simple fan cut

Felling cut for large diameter trees:

Sectioning method

Method of cut by penetration

Limbing

Bucking

MAINTENANCE, REPAIR AND STORING

Mounting the Bar and Chain

Mounting the Bar and Chain

(Quick Chain Tensioner)

Tensioning the Saw Chain

(Side chain tensioner)

(Quick chain tensioner)

(Front chain tensioner)

Checking Chain Tension

Fuel

Fueling

Chain Lubricant

Filling Chain Oil Tank

Checking Chain Lubrication

Chain Brake

Locking chain with chain brake

How to engage the chain brake.

Releasing the chain brake

How to disengage the chain brake.

The chain brake is designed to be activated also by the inertia...

Check operation of chain brake

How to test the chain brake function.

Chain brake maintenance

Information Before You Start

The four positions of the Master Control lever

Starting / Stopping the Engine

All Models

Alternative method of starting:

Standard versions

Versions with Easy2Start

To shut down the engine:

If the engine doesn’t start:

Operating Instructions

During break-in period

Important info for new machines.

During operation

Check chain tension frequently

Regular checks to ensure proper chain tension.

Taking Care of Guide Bar

Air Filter System

Cleaning the Air Filter

Motor Management

Adjusting the Carburetor

Specific engine tuning.

Standard Setting

Adjusting Idle Speed

Engine stops while idling

Chain runs while engine is idling

Erratic idling behavior, poor acceleration

Fine Tuning for Operation at High Altitude

Checking the Spark Plug

Replacing Starter Rope and Rewind Spring

Replacing the Starter Rope

Installing the Rope Rotor

Tensioning the Rewind Spring

Replacing a Broken Rewind Spring

Checking and Replacing Chain Sprocket

Installing spur sprocket / rim sprocket

Maintaining and Sharpening Saw Chain

Correctly sharpened chain

Importance of sharp chain.

You must observe certain angles...

File correctly

Depth gauge setting

Lowering depth gauges

Maintenance Chart

Main Parts of the Saw

Specifications

Engine

Ignition System

Fuel/Oil System

Cutting Attachment

Ordering Spare Parts

Maintenance and Repairs

STIHL Incorporated Federal and California Emission Control Warranty Statement

Your Warranty Rights and Obligations

Warranty Period

Diagnosis

Warranty Work

Limitations