The TM1401 manual is about 1 1/4 thick. The cover is a bit rough, but the rest of the book looks much better.
Yes, some of the pages and the edge of the book appear some dirty, but every page is very readable. This book is from December1989. The TM 1402S supplement manual is about 1/2 thick.
This book appears to deal more with diagnostics including of the electrical system. It contains flow charts in addition to other details about diagnostics. This book is from 1995.This book is used, but in very nice shape. Fixing your machine just once using these books will most likely have them pay for themselves and more. Please note the age difference between main service manual and the supplement. I do not believe that will be an issue, but I'm not completely sure. I'm happy to answer any questions.
The item "John Deere 9400 9500 9600 Combine Service Technical Manuals TM1402 & TM1402S" is in sale since Sunday, February 21, 2021. This item is in the category "Business & Industrial\Heavy Equipment, Parts & Attachments\Heavy Equipment Parts & Accessories\Heavy Equipment Manuals & Books".The seller is "inkatink" and is located in Fort Ransom, North Dakota. This item can be shipped worldwide.