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Grass Trimmer/Brush Cutter
Operator's Manual
MODEL
Read rules for safe operation and instructions carefully. ECHO provides an
Operator's Manual and a Safety Manual. Both must be read and understood for
proper and safe operation.
X7532098302
SRM - 230
SRM - 230S
WARNING
X753002992
12/08

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Summarization of Contents

ECHO Trimmer/Brush Cutter Model and Safety Overview
Model Identification: SRM-230/SRM-230S
Identifies the available SRM-230 and SRM-230S models for the grass trimmer/brush cutter.
Key Safety Warnings: Heat and Emissions
Highlights critical safety warnings regarding hot surfaces and California emissions regulations.
Manual Introduction and Purpose
Operator's Manual Guidance
Explains the purpose and content of the Operator's Manual for unit operation and maintenance.
Safety Manual Guidance
Explains the purpose and content of the Safety Manual for hazard awareness.
Understanding Safety Alerts and Symbols
Interpreting Danger, Warning, Caution
Defines the meaning and significance of Danger, Warning, and Caution safety alert symbols.
International Symbol Meanings
Lists and explains various international safety and operational symbols found on the unit.
Operator Condition and Safety Gear
Fitness for Operation
Advises operating the unit only when physically and mentally fit, free from fatigue or impairment.
Personal Protective Equipment (PPE) Guide
Details required PPE, including eye, hand, and hearing protection for safe operation.
Clothing and Weather Advice
Provides guidelines for proper clothing and considerations for operating in hot, humid weather.
Safe Operating Practices
Preventing Repetitive Stress Injuries (RSI)
Offers tips to avoid hand and arm injuries from vibration and repetitive movements.
Work Area Safety and Stance
Covers clearing the work area, maintaining a firm grip, and keeping a solid stance.
Engine Exhaust Hazards
Warns about the dangers of operating the unit in inadequately ventilated areas due to exhaust.
Equipment Checks and Emissions
Unit and Attachment Safety Checks
Emphasizes using approved attachments and performing pre-operation unit checks.
Moving Parts Safety Precautions
Provides warnings and precautions regarding hazards from moving components.
Fuel System Integrity
Advises on inspecting the fuel system for leaks, especially after a drop.
Emission Control System Details
Provides information on the unit's EPA Phase 2 Emission Control System.
Unit Component Identification
Safety Decal Locations and Importance
Explains the importance of locating and understanding safety decals on the unit.
Visual Guide to Unit Parts
Presents a diagram showing numbered components of the grass trimmer/brush cutter.
Detailed Component Descriptions
Power Head, Controls, and Starter
Describes the engine, ignition, fuel system, starter, grip, and throttle controls.
Drive Shaft and Cutting Head Assembly
Details the drive shaft, nylon cutter head, and the automatic cut-off knife.
Fuel System and Air Cleaner Components
Explains the fuel tank, cap, purge bulb, and air cleaner assembly.
Assembly and Package Contents
Initial Contents Verification
Lists items included in the package and advises checking for damage or missing parts.
Plastic Debris Shield Installation
Provides step-by-step instructions for installing the plastic debris shield assembly.
Nylon Line Head Procedures
Nylon Line Head Installation
Instructions for securely installing the nylon line head onto the drive shaft.
Advancing Trimmer Line Technique
A tip on how to extend the trimmer line during operation by tapping the head.
Removing the Nylon Line Head
Procedure for safely detaching the nylon line head from the drive shaft.
Operation and Handle Adjustment
Front Handle Positioning
Instructions for adjusting the front handle for comfortable and safe operation.
Critical Operation Safety Warnings
Warnings about moving parts, hot exhaust, and carbon monoxide hazards during operation.
Blade Operation Setup Guide
Blade Type Configuration Warning
Emphasizes the need for specific configurations (shield, handle, harness) for blade use.
Blade Set-Up Parts Requirements
Details the specific parts required for different types of metal blades.
Blade Usage Application Notes
Notes on requirements for grass/weed blades and brush/clearing blades.
Choosing and Using Cutting Blades
Blade Selection and Sharpness
Guidance on selecting blades matched to material and ensuring they are sharp.
Applications for Specific Blades
Describes the intended use for plastic, 8-tooth, 80-tooth, and 22-tooth blades.
Shoulder/Waist Harness Benefits
Recommends using a harness for operator safety and reduced fatigue.
Fuel Requirements and Safe Handling
Approved Fuel and Oil Specifications
Details approved gasoline octane, two-stroke oil types, and warnings about alternative fuels.
Safe Fuel Handling Practices
Lists essential safety precautions for mixing, storing, and refueling fuel.
Fuel Mixing and Storage Procedures
Fuel Mixing Instructions
Provides step-by-step instructions for correctly mixing gasoline and two-stroke oil.
Fuel Storage and Shelf Life
Offers guidelines for safe fuel storage and notes on fuel aging.
Starting a Cold Engine
Cold Start Safety Warning
Warns about the immediate operation of the attachment upon engine start.
Cold Engine Start Procedure
Detailed sequence of steps for starting the engine from a cold state.
Engine Starting and Stopping
Warm Engine Start Procedure
Outlines the steps for starting the engine when it is already warm.
Engine Stopping Procedure
Explains the safe method for shutting down the engine.
Stop Switch Malfunction Response
Provides instructions on how to stop the engine if the stop switch fails.
Maintenance Schedule and Skills
Maintenance Safety Precautions
General safety advice to follow before performing any maintenance tasks.
Maintenance Skill Level Guide
Explanation of skill levels (Level 1, Level 2) assigned to maintenance tasks.
Component Maintenance Intervals
Chart detailing the required maintenance frequency for various unit components.
Air Filter and Fuel Filter Service
Air Filter Cleaning Method
Provides step-by-step instructions for cleaning the air filter.
Fuel Filter Replacement Method
Details the procedure for removing and replacing the fuel filter.
Spark Plug and Cooling System Care
Spark Plug Service Procedures
Instructions for checking, cleaning, gapping, and tightening the spark plug.
Cooling System Airflow Importance
Explains the importance of airflow for engine cooling and preventing overheating.
Recommended Spark Plug Type
Specifies the correct NGK spark plug model (BPM-8Y) to prevent engine damage.
Exhaust System Maintenance
Component Access for Cleaning
Steps for removing engine covers to access exhaust components for cleaning.
Cylinder Fin Cleaning Process
Instructions for cleaning dirt and debris from the engine's cylinder fins.
Spark Arrestor Screen Cleaning
Procedure for removing and cleaning the spark arrestor screen.
Muffler and Exhaust Port Cleaning
Muffler Carbon Deposit Removal
Instructions for cleaning carbon deposits from muffler components.
Exhaust Port Cleaning Technique
Steps for cleaning carbon deposits from the cylinder's exhaust port.
Exhaust Port Cleaning Tool Warning
Warns against using metal tools for cleaning the exhaust port to prevent cylinder damage.
Carburetor Adjustment Procedures
Engine Break-In and Carburetor
Notes that carburetor adjustments should only be made after the engine break-in period.
High Altitude Operation Tuning
Advice on carburetor adjustments for satisfactory operation above 1,100 feet MSL.
Idle Speed Adjustment Guide
Instructions on how to check and adjust the engine's idle speed.
Lubrication of Gear Housing and Drive Shaft
Gear Housing Lubrication Steps
Procedure for checking and adding grease to the gear housing.
SRM-230 Drive Shaft Lubrication
Instructions for lubricating the flexible cable in the drive shaft housing for SRM-230.
Nylon Line Replacement for Trimmer Head
Echomatic Pro Head Line Loading
Detailed step-by-step instructions for loading new trimmer line into the Echomatic Pro trimmer head.
Sharpening Metal Cutting Blades
Blade Inspection and Balance Checks
Guidance on inspecting blades for cracks, missing teeth, and maintaining balance.
Proper Blade Sharpening Angle
Details the correct 30-degree angle for filing each tooth.
Maintaining Tooth Radius
Emphasizes the importance of preserving the tooth radius for blade integrity.
Troubleshooting Engine Problems
Starting Difficulty Diagnosis
Common causes and remedies for engines that crank but start hard or not at all.
Poor Performance Diagnosis
Troubleshooting issues related to the engine running poorly or not accelerating properly.
Engine Not Cranking Troubleshooting
Diagnosis for when the engine fails to crank, indicating potential internal problems.
Storage and Preservation Procedures
Long-Term Storage Preparation
Steps for preparing the unit for storage longer than 30 days, including lubrication.
Fuel System Draining for Storage
Procedure for completely draining the fuel tank and carburetor for storage.
Technical Specifications
Physical Dimensions and Weight
Details the length, width, height, and dry weight of the unit models.
Engine and Performance Data
Provides specifications for engine type, bore, stroke, displacement, and operating speeds.
Service, Support, and Warranty
Parts Identification and Service
Information on finding model/serial numbers and obtaining genuine ECHO parts.
Customer Support and Warranty Registration
Contact details for ECHO Consumer Product Support and warranty registration.
Obtaining Additional Manuals
Information on how to acquire replacement Operator's, Parts, and Safety Manuals.

Table of Contents