Husqvarna 525RJX User Manual

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525RJX
Oper ator ′ s manual
Please r ead the operator’s manual carefully and make sure you understand the instructions
before using the machine.

Husqvarna 525RJX Specifications

General

Engine Type	2-stroke
Displacement	25.4 cm³
Weight (excluding cutting equipment)	5.1 kg
Line Diameter	2.4 mm
Sound power level	107 dB(A)
Sound pressure level	94 dB(A)
Fuel Tank Volume	0.5 liters

Summary

Key to Symbols

Protective Equipment Symbols

Symbols related to wearing protective gear like boots, helmets, hearing, and eye protection.

Machine Operation and Safety Symbols

Symbols for cutting attachments, air purge, safety distances, and noise emissions.

Introduction

What Is What?

Component Identification

Diagram and list identifying all parts of the machine and their corresponding numbers.

General Safety Precautions

Important Safety Instructions

General advice on machine usage, maintenance, and avoiding hazards like fatigue or modification.

Personal Protective Equipment

Details on required protective gear: helmet, hearing and eye protection, and gloves.

Clothing and First Aid

Guidance on appropriate clothing and the necessity of a first aid kit.

Machine Safety Equipment Checks

Instructions for checking and maintaining the machine's safety features and guards.

Throttle Lockout Operation

Explanation and checks for the throttle lockout mechanism to prevent accidental acceleration.

Stop Switch and Guards

Checks for the stop switch functionality and cutting attachment guards.

Vibration Damping System

Information on the vibration damping system and potential health risks from overexposure.

Muffler and Spark Arrestor

Details on muffler function, spark arrestor mesh maintenance, and fire risks.

Locking Nut Usage

Instructions on using the locking nut for cutting attachments, including thread direction.

Cutting Equipment Safety

Guidance on choosing and maintaining cutting equipment to reduce risks and improve performance.

Blade Sharpening and Condition

Importance of correctly sharpened blades and checking for damage to prevent accidents.

Grass Knife and Blade Sharpening

Instructions for sharpening grass knives and blades, and when to discard them.

Trimmer Head Usage and Care

Tips for winding trimmer cord, using recommended heads/cords, and cord life.

Assembly

Fitting the Loop Handle

Steps for attaching the loop handle to the machine shaft and adjusting it.

Fitting the J-handle

Instructions for attaching the J-handle, including blade compatibility warnings.

Fitting the Suspension Ring

How to attach the suspension ring for balance and comfort when using the harness.

Assembling the Cutting Equipment

Important safety notes on fitting cutting attachments and ensuring correct engagement.

Fitting Trimmer Guard and Head

Procedure for fitting the trimmer guard and head to the output shaft.

Fitting Blade Guard, Grass Blade and Cutter

Steps for attaching blade guards, grass blades, and cutters, including torque settings.

Fuel Handling

Fuel Safety Precautions

Essential safety rules for handling fuel, including spills, clothing, and leaks.

Transport and Storage Guidelines

Guidelines for safe transport, storage, and preventing unintentional starting during storage.

Petrol and Two-Stroke Oil Specifications

Specifications for petrol octane, oil type, and mixing ratios for the two-stroke engine.

Mixing Fuel Correctly

Step-by-step instructions for mixing petrol and two-stroke oil correctly.

Safe Fueling Procedure

Safe fueling practices, including location, engine state, and cap handling.

Starting and Stopping

Pre-Starting Checks

Essential checks before starting the machine, including blade, guards, and throttle.

Starting the Engine Safely

Instructions for safely starting the engine, including warnings about immediate attachment rotation.

Engine Starting Steps

Detailed steps for starting the engine using air purge, choke, and starter cord.

Stopping the Engine

How to stop the engine using the stop switch and precautions for maintenance.

Working Techniques

General Working Instructions

Basic safety precautions and advice for working with brush cutters and trimmers.

Basic Safety Rules for Operation

Key safety rules for looking around, inspecting the area, and maintaining balance.

Safe Operation Practices

Advice on slow idling, avoiding entanglement, and preventing blade thrust injuries.

Grass Clearing with Grass Blade

Technique for using grass blades for clearing tall grass, including blade angle and movement.

Grass Trimming with Trimmer Head

Methods for trimming grass, reducing plant damage, and managing cord wear.

Cutting Grass Effectively

Using the trimmer for cutting grass, keeping cord parallel, and avoiding ground contact.

Sweeping Debris with Cord

Technique for using cord rotation to sweep debris, and optimal throttle settings.

Maintenance

Carburettor Function and Adjustment

Explanation of carburettor function, adjustment controls (L, H, T), and idle speed adjustment.

Muffler and Catalytic Converter

Information on muffler function, spark arrestor mesh, and catalytic converters.

Muffler and Spark Arrestor Maintenance

Cleaning and maintenance of the muffler and spark arrestor mesh, including warnings.

Cooling System Components and Cleaning

Identification of cooling system parts and importance of keeping them clean.

Spark Plug Condition and Checks

Factors affecting spark plug condition and troubleshooting starting issues.

Spark Plug Gap and Replacement

Checking electrode gap, replacing spark plugs, and using the correct type.

Air Filter Cleaning and Replacement

Procedure for cleaning and replacing the air filter to prevent malfunctions.

Bevel Gear Lubrication and Checks

Instructions for checking and maintaining the bevel gear grease.

Maintenance Schedule

Technical Data

Engine and Performance Specifications

Details on engine displacement, bore, stroke, speed, and output.

Noise and Vibration Levels

Data on sound power, sound pressure, and vibration levels for operator comfort and safety.

Approved Accessories and Part Numbers

List of approved cutting attachments and their corresponding part numbers.

EC Declaration of Conformity

Statement of compliance with European directives and applied standards.