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Stihl BR 450 User Manual

Stihl BR 450
84 pages
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STIHL BR 450, 450 C
WARNING
Read Instruction Manual thoroughly
before use and follow all safety
precautions – improper use can
cause serious or fatal injury.
ADVERTENCIA
Antes de usar la máquina lea y siga
todas las precauciones de
seguridad dadas en el manual de
instrucciones – el uso incorrecto
puede causar lesiones graves o
mortales.
Instruction Manual
Manual de instrucciones
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Stihl BR 450 Specifications

General IconGeneral
TypeBackpack blower
Airflow1430 m³/h
Airspeed298.8 km/h
Suction mode-
Shoulder strapYes
Power sourceGasoline
Sound power level108 dB
Vibration emission2.5 m/s²
Sound pressure level102 dB
Weight and Dimensions IconWeight and Dimensions
Weight10600 g

Summary

Guide to Using this Manual

Pictograms

Explains symbols attached or embossed on the machine.

Symbols in Text

Describes how instructions and procedures are illustrated.

Safety Precautions and Working Techniques

THE OPERATOR

Guidelines for the operator's physical and mental condition before and during use.

Physical Condition

Requirements for operator's physical and mental health, avoiding fatigue and substances.

Safety Precautions and Working Techniques

Proper Clothing

Specifies appropriate apparel for safe operation, avoiding loose items.

THE POWER TOOL

General information about the power tool itself, including parts and modifications.

THE USE OF THE POWER TOOL

Transporting the Power Tool

Instructions for safely moving the blower, especially in vehicles.

Fuel

Details on the required oil-gasoline mixture and fuel quality.

Fueling Instructions

Safety guidelines and procedures for refueling the machine.

THE USE OF THE POWER TOOL

How to Avoid Fuel Spraying

Explains how to prevent dangerous fuel expulsion during fueling.

Removing the Threaded Fuel Filler Cap

Step-by-step guide for safely opening the fuel tank cap.

THE USE OF THE POWER TOOL

Installing the Threaded Fuel Filler Cap

Instructions for properly securing the fuel filler cap to prevent leaks.

Damaged or Broken Cap

What to do if the fuel cap is not functioning correctly.

Vapor Lock

Explanation of vapor lock and how to remedy it.

Before Operation

Pre-operation checks for safety and proper function.

Starting

Holding and Controlling the Power Tool

Proper grip and posture for safe operation of the blower.

Working Conditions

Advice for operating in slippery or difficult terrain, and on slopes.

Operating Instructions

During Operation

How to operate the blower safely once the engine is running.

After Finishing Work

Steps to take after completing the work, including cooling the engine.

MAINTENANCE, REPAIR AND STORAGE

Use only identical STIHL replacement parts

Emphasizes using genuine STIHL parts for safety and performance.

Follow maintenance and repair instructions

Advises adhering strictly to manual procedures for maintenance and repair.

Stop the engine before maintenance

Crucial safety step before performing any work on the unit.

Assembling the Unit

Mounting the Hose Clamps and Pleated Hose

Step-by-step guide for attaching hose components.

Assembling the Unit

Mounting the Control Handle

How to attach and secure the control handle to the blower tube.

Adjusting the Control Handle

Procedure for positioning the control handle for optimal comfort.

Removing the nozzle (BR 700)

Steps to detach the nozzle from the blower tube for the BR 700 model.

Mounting the Nozzle (BR 700 X)

Steps to attach the nozzle to the blower tube for the BR 700 X model.

Assembling the Unit

Removing the nozzle (BR 700 X)

Steps to detach the nozzle from the blower tube for the BR 700 X model.

Adjusting the Blower Tube (BR 700)

How to adjust the length of the blower tube for the BR 700 model.

Wear Mark on Nozzle

Information about nozzle wear and when replacement is needed.

Transport Aid

How to secure the blower tube for storage or transport.

Fitting the Harness

Adjusting the Harness

How to adjust the harness straps for a snug and secure fit.

Loosening the Harness

Steps to release the harness for removal.

Fuel

Fuel mix ages

Guidance on fuel storage duration and mixing oil with gasoline.

Fueling

Detailed instructions and warnings for safely refueling the machine.

Fueling

Preparations

Steps to take before fueling, including cleaning the cap area.

Opening

Safe procedure for opening the fuel tank cap to release pressure.

Refueling

Correct method for adding fuel, avoiding spills and overfilling.

Closing

Proper procedure for closing the fuel tank cap after refueling.

Information Before You Start

Positions of Master Control Lever

Explains the function of the setting lever and throttle trigger.

Starting / Stopping the Engine

Starting the Engine

Basic steps and safety notes for starting the engine.

Starting / Stopping the Engine

Cold engine (cold start)

Procedure for starting the engine when it is cold.

Warm engine (warm start)

Procedure for starting the engine when it is warm.

Cranking

Steps for pulling the starter grip to crank the engine.

Electric start (BR 450 C)

Information about the electric starter system on the BR 450 C model.

Starting / Stopping the Engine

As soon as the engine runs

Actions to take immediately after the engine starts.

Stopping the Engine

How to safely shut off the engine.

Other Hints on Starting

Troubleshooting and tips for starting issues.

Operating Instructions

During Operation

Guidelines for safe and effective operation of the blower.

After Finishing Work

Steps to take after completing the work, including cooling the engine.

Replacing the Air Filter

Adjusting the Carburetor

General Information

Overview of the carburetor settings from the factory.

Preparations

Steps to take before adjusting the carburetor.

Standard Setting

Factory default settings for the carburetor.

Adjusting Idle Speed

How to adjust the engine's idle speed for smooth running.

Spark Plug

Checking the Spark Plug

Procedure for inspecting the spark plug for wear and cleanliness.

Removing the spark plug

Step-by-step guide to safely remove the spark plug.

Installing the spark plug

Spark Arresting Screen in Muffler

Information about the spark arresting screen's function and maintenance.

Storing the Machine

For periods of 3 months or longer

Specific instructions for long-term storage of the blower.

Inspections and Maintenance by Dealer

Spark Arrestor in Muffler and Spacer

Checks to be performed by a dealer regarding the spark arrestor and spacer.

Maintenance and Care

Main Parts

Definitions

Specifications

EPA / CEPA

Emission compliance periods for EPA and CEPA standards.

CARB

Emission compliance periods for CARB standards.

Ignition System

Fuel System

Details about the carburetor and fuel tank capacity.

Blowing Performance

Specifications for blowing force, air velocity, and air flow rate.

Weight

Specifications for the weight of the BR 450 and BR 450 C models.

Maintenance and Repairs

Disposal

Limited Warranty

STIHL Incorporated Federal Emission Control Warranty Statement

Manufacturer's Warranty Coverage

Details on the duration and scope of the manufacturer's warranty.

Owner's Warranty Responsibilities

Owner's duties regarding maintenance and proper use for warranty validity.

Trademarks

STIHL Registered Trademarks

List of officially registered STIHL trademarks.

Some of STIHL's Common Law Trademarks

List of common law trademarks used by STIHL.

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