Makita EM4351UH User Manual

Petrol Brushcutter
EM4351UH
EM4350UH
EM4350LH
INSTRUCTION MANUAL
Important:
Read this instruction manual carefully before putting the Petrol Brushcutter into operation and strictly observe
the safety regulations!
Preserve instruction manual carefully!
EM4351UH EM4350UH EM4350LH

Makita EM4351UH Specifications

General

Engine power	2.1 hp
Number of strokes	4
Sound power level	101.8 dB
Fuel tank capacity	0.62 L
Vibration emission	2 m/s²
Engine displacement	43 cm³
Sound pressure level	92.4 dB
Sound pressure level uncertainty	1.8 dB
Power source	Gasoline

Weight and Dimensions

Weight	8600 g

Summary

Safety Instructions

General Instructions

User responsibilities, age limits, and general usage precautions for safe operation of the brushcutter.

Intended Use of the Machine

Specifies the machine's intended applications, such as cutting grass, weeds, and bushes, and prohibited uses.

Personal Protective Equipment

Details required safety gear like helmet, eye protection, ear protection, gloves, and footwear for user safety.

Starting Up the Brushcutter

Outlines pre-operation checks, safety measures, and environmental considerations before starting the brushcutter.

Refueling

Handling of Fuel

Precautions for handling flammable fuel, emphasizing ventilation, avoiding skin contact, and eye safety.

Storage Period of Fuel

Guidelines on how long fuel can be stored effectively and safely to prevent deterioration.

Storage of Machine and Refill Tank

Recommendations for storing the machine and fuel tank in a cool, safe place away from direct sunlight.

Fuel

Specifies the type of unleaded automobile gasoline (87+ octane) required for the four-stroke engine.

Points for Fuel

Important considerations regarding fuel mixture, use of deteriorated fuel, and preventing mechanical troubles.

Refueling Procedure

Step-by-step instructions and warnings for safely refueling the machine, including pressure release and cap tightening.

Method of Operation

General Operation Rules

Safety guidelines for operating the brushcutter in good light, ensuring stable footing, and avoiding specific hazards.

Cutting Tools

Information on suitable cutting tools like nylon heads for grass and metal blades for weeds and bushes.

Kickback (Blade Thrust)

Explanation of kickback, its causes (caught blade), and prevention methods to avoid serious injury.

Vibration

Discusses the effects of vibration on users' health and methods to reduce risks like keeping hands warm.

Maintenance Instructions

Advises on servicing by authorized centers, using genuine parts, and checking equipment condition before use.

First Aid

First Aid Procedures

Procedures and information to provide in case of an accident, including location, incident details, and injured persons.

EC Declaration of Conformity

Product Compliance

Makita's declaration that the product conforms to relevant European directives and standards, listing applicable directives.

Technical Data

Specifications Overview

Detailed specifications including dimensions, mass, volume, engine displacement, performance, vibration, and sound levels for all models.

Designation of Parts

Component Identification

Identifies and lists all key components of the brushcutter models (EM4351UH, EM4350UH, EM4350LH) with corresponding numbers.

Mounting of Handle

Handle Assembly

Step-by-step instructions for attaching the handle assembly to the brushcutter shaft for EM4351UH, EM4350UH, and EM4350LH models.

Mounting of Protector

Protector Installation

Instructions on installing the correct cutting tool guard (protector) for metal blades and nylon cutting heads for safety.

Mounting of Metal Blade or Nylon Cutting Head

Cutting Attachment Installation

Procedures for attaching and replacing the cutting attachments like metal blades and nylon cutting heads using specified tools.

Before Start of Operation

Inspection and Refill of Engine Oil

How to check the engine oil level on a horizontal surface and top up with the recommended oil.

Correct Handling of Machine

Attachment of Shoulder Harness

Guidance on adjusting and wearing the shoulder harness correctly for balanced operation and reduced fatigue.

Releasing the Machine

Instructions on how to safely detach the brushcutter from the harness, emphasizing control.

Hanging Ring

Information on the load capacity (max 2 kg) and safe use of the machine's hanging ring to prevent entanglement.

Points in Operation and How to Stop

Starting the Brushcutter

Detailed steps for starting the engine, covering cold start with choke and warm start procedures.

Stopping

Engine Shutdown Procedure

Instructions on how to safely shut down the engine by releasing the throttle and setting the I-O switch to STOP.

Adjustment of Idle Speed

Idle Speed Settings

Procedure for checking and adjusting the engine's idle speed using the carburetor adjusting screw.

Resharpening the Cutting Tool

Nylon Cutting Head Maintenance

Steps for maintaining the nylon cutting head, including feeding line and replacement procedures.

Servicing Instructions

Daily Checkup and Maintenance

Routine checks and maintenance tasks to be performed daily, including cleaning air filter and checking fasteners.

Replacement of Engine Oil

Step-by-step guide for draining and refilling the engine oil, including recommended oil type and interval.

Checking the Spark Plug

Spark Plug Inspection

How to inspect, clean, adjust the gap (0.7-0.8mm), or replace the spark plug using the supplied wrench.

Supply of Grease to Gear Case

Gear Case Lubrication

Instructions on where and how often to supply grease (Shell Alvania 2) to the gear case every 30 hours.

Cleaning of Fuel Filter

Fuel Filter Maintenance

Procedure for inspecting, cleaning, or replacing the fuel filter monthly (every 50 operating hours).

Replacement of Fuel Pipe

Fuel Pipe Replacement

Guidelines for replacing the fuel pipe annually, emphasizing inspection for leaks to prevent fire hazards.

Inspection of Bolts, Nuts and Screws

Fastener Checks

Recommendations for checking and retightening various fasteners, fuel cap, and oil cap for safety and leak prevention.

Cleaning of Parts

General Cleaning Advice

General advice on keeping the engine clean by wiping and ensuring cylinder fins are free of dust to prevent seizure.

Replacement of Gaskets and Packings

Gasket and Packing Replacement

Information on replacing gaskets and packings, typically performed when the engine is disassembled.

Storage

Long-Term Storage Preparation

Instructions for draining fuel from the tank and carburetor and preparing the machine for long-term storage.

Troubleshooting

Problem Diagnosis and Solutions

A guide to identifying and resolving common problems with the brushcutter, suggesting remedies for various malfunctions.