This manual is the owner's manual for Yamaha EF4000DE/EF5200DE/EF6600DE YG4000D/YG5200D/YG6600D/YG6600DE generators, mainly introduces the operation and maintenance methods of the machine.
This Owner's Manual introduces the Yamaha EF and YG series generators, outlines safety warnings, and explains the purpose of each section. It includes important label locations, exhaust and fuel hazards, electrical safety, and pre‑operation checks.
The manual details operating procedures, periodic maintenance, troubleshooting, specifications, wiring diagrams, and warranty registration. It also provides a warranty summary, warranty FAQ, and a registration form for owners to keep the warranty valid.
The customer is responsible for all costs of normal maintenance service, non‑warranty repairs, accident damages, as well as oil and spark plugs.
No. The warranty is limited to repair of the machine itself.
Yes. The remainder of the existing warranty can be transferred upon request after inspection and re‑registration by an authorized Yamaha dealer.
Yes, if you are a qualified mechanic and follow the procedures in the Owner’s and Service Manual; items requiring special tools should be done by a Yamaha dealer.