Makita PLM4627N - User Manual

Questions and Answers

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Jodi SmithAug 10, 2025
What to do if Makita PLM4627N engine difficult to start or loses power?
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  Theodore ShieldsAug 10, 2025
  If your Makita Lawn Mower engine is difficult to start or loses power, it could be due to dirt, water, or stale fuel in the tank. In this case, drain the fuel and clean the tank, then fill it with clean, fresh fuel. Another possible cause is a plugged vent hole in the fuel tank cap; try cleaning or replacing the fuel tank cap. A dirty air cleaner element could also be the culprit, so clean the air cleaner element.
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Vincent PruittAug 14, 2025
Why does my Makita PLM4627N engine overheat?
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  Mike ArmstrongAug 15, 2025
  Your Makita Lawn Mower engine might be overheating because the cooling air flow is restricted. Remove any debris from the slots in the shroud, blower housing, and air passages to resolve this. Another cause could be an incorrect spark plug. Install an RC12YC or QC12YC spark plug and cooling fins on the engine.
S
Sara BrownAug 18, 2025
Why does my Makita PLM4627N Lawn Mower engine operate erratically?
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  Leonard GutierrezAug 18, 2025
  If your Makita Lawn Mower engine is operating erratically, it could be due to a defective spark plug. In this case, install a new, correctly gapped plug. Another potential cause is an incorrect spark plug gap; set the gap between electrodes at 0.7 to 0.8 mm. Also, a dirty air cleaner element can cause this issue, so clean the air cleaner element.
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William CarterAug 25, 2025
What to do if Makita Lawn Mower vibrates abnormally?
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  Justin WeaverAug 25, 2025
  If your Makita Lawn Mower vibrates abnormally, first check if the cutting assembly is loose and tighten the blade. If the vibration persists, the cutting assembly might be unbalanced, and you should balance the blade.
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mason09Aug 27, 2025
Why Makita PLM4627N engine idles poorly?
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  Brian RamosAug 27, 2025
  If your Makita Lawn Mower engine idles poorly, it might be due to a dirty air cleaner element, so clean it. Alternatively, air slots in the engine shroud could be blocked; remove any debris from the slots. Cooling fins and air passages under the engine blower housing could also be blocked, so remove any debris from these areas.
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Peter BruceSep 1, 2025
Why Makita PLM4627N Lawn Mower engine skips at high speed?
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  Abigail LucasSep 1, 2025
  The Makita Lawn Mower engine might skip at high speed if the gap between the electrodes of the spark plug is too close. Set the gap between the electrodes at 0.7 to 0.8 mm to resolve this issue.
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Jennifer BallNov 5, 2025
Why Makita PLM4627N engine does not start?
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  Anthony AndradeNov 5, 2025
  There are several reasons why your Makita Lawn Mower engine might not be starting. It could be due to the throttle choke not being in the correct position, an empty fuel tank, or a dirty air cleaner element. Other potential causes include a loose spark plug, a disconnected spark plug wire, an incorrect spark plug gap, a defective spark plug, or a carburetor flooded with fuel. In the first case, move throttle choke to correct position. If the fuel tank is empty, fill it with fuel. If the air cleaner element is dirty, clean it. If the spark plug is loose, tighten it to 25-30 Nm. If the spark plug wire is loose, install it on the spark plug. If the spark plug gap is incorrect, set the gap between electrodes at 0.7 to 0.8 mm. If the spark plug is defective, install a new, correctly gapped plug...

Summary

Symbols Marked on Product

General Safety Rules

Operator Training and Preparation

Guidance on operator training, machine familiarity, and pre-operation checks for safe use.

Safe Operation Practices

Rules for safe operation, handling slopes, wet grass, and prohibited applications.

Parts Description

Technical Data

Assembly

Folding Handle Assembly

Mounting the Grass Catcher

Operating Instructions

Before Starting Engine

Pre-start checks, fuel, and oil requirements before operating the mower.

Starting Engine and Engaging Blade

Step-by-step guide to start the engine and engage the cutting blade safely.

Operation Procedures and Safety

Details on holding the brake handle and general operation safety.

Stopping the Engine

Procedure for safely stopping the engine and blade.

Self-Drive Feature Operation

Cutting Height Adjustment

Maintenance Instructions

Spark Plug and Brake Pad Servicing

Lubrication Instructions

Cleaning

Air Cleaner Maintenance

Cutting Blade Servicing

Instructions for safely sharpening, balancing, and replacing the cutting blade.

Blade Mounting Torque Specification

Storage Instructions (Off Season)

Preparing Mower for Storage

Troubleshooting Guide

Engine Starting and Power Issues

Addresses problems like engine not starting or losing power.

Engine Operation and Overheating

Solutions for erratic operation, idling, overheating, and skipping.

Vibration and Cutting Assembly Problems

Diagnosing and fixing causes of abnormal mower vibrations, like loose or unbalanced cutting assembly.

Makita PLM4627N Specifications

General

Engine Type	4-stroke
Cutting Width	46 cm
Cutting Height Adjustment	Central
Cutting Height Range	25 - 75 mm
Grass Collector Capacity	50 L
Power Source	Petrol
Battery Type	Lithium-ion