EF 600 Generator

[marv8]

Does anyone know where you can find a manual or repair guide for this older type of Yamaha generator?

[YamahaGenuineParts.com]

Good morning, here you go....
Yamaha Factory Service manual $82.95
                               Shipping $19.00 with a tracking # anywhere in N.America
                                  Total $101.95 Canadian $....US customers save 20% on the exchange rate

You can order by email "[e-mail]"
We accept Visa MasterCard and American Express.  
Please include the CVV number and expiry date and we will process the order for you by email.
If you wish to order by phone, please call, our toll free number is 1-877-414-0404.

Regards Speedy,
www.YamahaGenuineParts.com