This collection contains the following 3 manuals:
Robin DY23-2 and DY27-2 service manual
Robin DY23-2 instruction manual
Robin DY23-2 parts manual

Manual descriptions:

1: Robin DY23-2 and DY27-2 service manual. 75 pages.

This is the complete factory service repair workshop manual for the Subaru Robin DY23-2, This service Manual has easy-to-read text sections with top quality diagrams and instructions. Step by step instruction & highly detailed exploded pictures & diagrams to show you how to complete the required job correctly & efficiently.
Models Covered:
Air-Cooled. 4-cycle, Overhead Valve, Single vertical cylinder, Diesel engine

Subaru Robin DY23-2: DY23-2D, DY23-2B
Subaru Robin DY27-2: DY27-2D, DY27-2B

Service Repair Manual Index:
SPECIFICATIONS
PERFORMANCE
FEATURES
GENERAL DESCRIPTION OF ENGINE COMPONENTS
DISASSEMBLY AND REASSEMBLY
GENERAL DESCRIPTION OF FUEL SYSTEM,GOVERNOR,LUBRICATION AND
DECOMPRESSION SYSTEM
STARTING SYSTEM
PRECAUTIONS FOR MOUNTING THE ENGINE ON THE EQUIPMENT
CHECKS AND CORRECTIONS
MAINTENANCE AND STORING

2: Robin DY23-2 parts manual. This is the factory illustrated
parts manual.

This is a fully illustrated parts list with exploded views.
It can be a helpful tool to assist disassembly and assembly.

3: Robin DY23-2 instruction manual.
This manual includes specification, servicing procedures and
operation.