Sakai SW40 and TW40 workshop manual.

This factory service manual has easy-to-read text sections
with top quality diagrams, pictures and illustrations. The
step by step instructions show you how to fault find or
complete any repair or overhaul, correctly and efficiently,
saving time and avoiding costly mistakes. All specifications
and tolerances are listed. Functions of components and systems
are also explained. It has all hydraulic and electrical schematics.