Robin Subaru EY15-3D User Manual

Robin Subaru EY15-3D

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EY15-3D

EY20-3D

MODEL

ISSUE EMD-EU1736

2ZZ9990064

Table of Contents

Questions and Answers:

G
Gabriela BoyerAug 2, 2025
Why won't my Robin Subaru EY15-3D Engine start?
- D
  davisjasminAug 2, 2025
  There are several reasons why your Robin Engine might not start. First, ensure the stop switch is in the 'I' (ON) position. Next, inspect the spark plug for fouling; clean or replace it if needed. If these steps don't work, remove the spark plug, connect it to the plug cap, and pull the starter handle while grounding the plug against the engine body. If the spark is weak or nonexistent, try a new spark plug. If there's still no spark with a new plug, the ignition system may be faulty. Also, if the oil level is too low, raise it to the prescribed limit.
D
Dr. Dawn RichardAug 16, 2025
How to check the spark plug on a Robin Engine that won't start?
- R
  Ryan ChoiAug 16, 2025
  To check the spark plug on your Robin Engine, first remove and inspect it. If the electrode is fouled, clean or replace the spark plug with a new one. If that doesn't work, remove the spark plug and connect it to the plug cap. Pull the starter handle while grounding the spark plug against the engine body. If the spark is weak or nonexistent, try a new spark plug. Remember to wipe up any spilled fuel and keep the spark plug away from the spark plug hole during testing. Also, do not hold the spark plug by hand while pulling the recoil starter.

Robin Subaru EY15-3D Specifications

General

Starting System	Recoil starter
Ignition System	Transistorized magneto ignition
Displacement	143 cc
Oil Capacity	0.6 L (0.16 US gal)
Fuel Type	Gasoline

Summary

Safety Precautions

Exhaust Precautions

Warnings about exhaust gas toxicity and ventilation requirements.

Refueling Precautions

Safety guidelines for refueling gasoline, including engine stop and cooling.

Fire Prevention

Other Safety Precautions

Operating Your Engine

Starting Procedure

Step-by-step guide for starting the engine, including fuel cock, stop switch, choke, and starter handle.

Stopping Procedure

Steps to safely stop the engine using the stop switch and fuel cock.

Maintenance

Spark Plug Inspection

Engine Oil Change

Procedure for changing engine oil, including safety and capacity information.

Oil Sensor Instructions

Function of Oil Sensor

Explanation of how the oil sensor stops the engine when oil level is low.

Restarting with Oil Sensor

Easy Troubleshooting

Engine Will Not Start

Checks for spark, compression, and wet spark plug when the engine fails to start.

Spark Plug Issues

Wet Spark Plug Diagnosis

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