Stihl MS 250C User Manual

MS 250
español / EE.UU
108
Si se nota una pérdida considerable de
la potencia del motor
N Oprima el bloqueo del gatillo de
aceleración y mueva la palanca de
control maestro a la posición de
estrangulador cerrado l.
N Gire la perilla 90° a la izquierda.
N Quite la cubierta de la caja del
carburador verticalmente.
N Siempre sustituya los filtros
dañados.
N Limpie toda la suciedad de
alrededor del filtro.
N Coloque los dedos detrás del filtro
de aire (1), coloque los pulgares
contra la caja y gire el filtro hacia el
mango trasero.
INDICACIÓN
Para evitar dañar el filtro, retírelo e
instálelo sin usar herramientas.
N Sople el filtro con aire comprimido
dirigido desde el lado de aire limpio.
Si la tela del filtro tiene suciedad pegada
o no se dispone de aire comprimido:
N Lave el filtro en una solución limpia
y no inflamable (por ejemplo, agua
jabonosa tibia) y séquelo.
N Vuelva a instalar el filtro de aire.
Las emisiones de gases de escape son
controladas por el diseño del motor y
sus componentes (por ej. carburación,
encendido, sincronización y regulación
de las válvulas o la lumbrera).
Limpieza del filtro de aire
208BA005 KN
1
135BA035 KN
Gestión del motor

Stihl MS 250C Specifications

General

Engine Power	2.3 kW
Displacement	45.4 cm³
Guide Bar Length	40 cm
Power output	2.3 kW (3.1 hp)
Chain pitch	3/8"

Summary

Guide to Using this Manual

Pictograms

Explains symbols used on the chainsaw.

Symbols in Text

Details how text and illustrations convey procedures.

Safety Precautions and Working Techniques

The Operator

Outlines physical and mental requirements for safe operation.

Proper Clothing

Details essential protective apparel for safe chainsaw use.

THE CHAIN SAW

Transporting the Chain Saw

Instructions for safe transport by hand or vehicle.

Fuel

Fueling Instructions

Guidelines for safe refueling procedures.

Fuel Spraying or "Geysering"

Explains and warns about pressurized fuel expulsion.

Installing the Toolless Fuel Cap

Misaligned, Damaged or Broken Cap

Troubleshooting for improperly fitting fuel caps.

Before Operation

Proper assembly of the bar and saw chain

Instructions for correctly assembling bar and chain.

Holding and Controlling the Chain Saw

REACTIVE FORCES INCLUDING KICKBACK

Kickback

Explains kickback occurrence and hazards.

Devices for Reducing the Risk of Kickback Injury

STIHL Quickstop Chain Brake

Describes the chain brake system and its activation.

Low Kickback Saw Chain and Reduced Kickback Bars

Low Kickback Saw Chain

Details STIHL's low kickback saw chain features.

Reduced Kickback Bars

Explains STIHL's reduced kickback guide bars.

Felling

Felling Instructions

General instructions for felling trees safely.

Logs under strain

Precautions for cutting logs under tension to avoid pinching.

Escape Path

Planning safe escape routes during tree felling.

Buttress Roots

Techniques for cutting trees with large buttress roots.

Gunning Sight

Using the saw's sight for accurate felling direction.

Felling Cut for Large Diameter Trees

Sectioning Method

Technique for felling large diameter trees by sectioning.

Plunge-cut Method

Technique for felling large diameter trees using plunge cuts.

Felling Cut for Small Diameter Trees: Simple Fan Cut

Mounting the Bar and Chain

Chain scabbard

Explains the purpose and importance of the chain scabbard.

Cutting Attachment

Chain pitch and drive link gauge

Ensures correct compatibility between chain and guide bar components.

Tensioning the Chain

Checking Chain Tension

How to verify correct chain tension.

Chain Lubricant

Filling Chain Oil Tank

Instructions for filling the chain oil reservoir.

Chain Brake

Releasing the chain brake

Procedure for disengaging the chain brake.

Winter Operation

Starting / Stopping the Engine

Positions of Master Control Lever

Explains the functions of the master control lever positions.

Starting Methods

Describes starting procedures on the ground and between legs.

Operating Instructions

During the break-in period

Guidelines for operating a new machine during its initial period.

During work

General operating recommendations and precautions.

Taking Care of the Guide Bar

Air Filter System

Details the different types of air filters and their use.

Adjusting the Carburetor

Adjusting Idle Speed

Procedure for setting the engine's idle speed.

Fine Tuning for High Altitude

Adjustments for optimal performance at high altitudes.

Spark Plug

Checking the spark plug

Steps to inspect and diagnose issues using the spark plug.

Storing the Machine

Checking and Replacing the Chain Sprocket

Maintaining and Sharpening the Saw Chain

Sharpening Techniques

Covers file holder use, angle checks, and depth gauge settings.

Maintenance and Care

Guide bar and Air Filter Care

Instructions for care and cleaning of guide bar and air filter system.

Engine Components Maintenance

Covers cleaning air filter and engine management.

Spark Plug and Storage

Inspection of spark plug and procedures for storing the machine.

Specifications