Hi Brian,
Following our recent off forum discussions I thought that I would just update this thread to remind those not aware that a great source of maintenance info for the bikes can be found in one of the Clymer series of manuals that covers the CB900 and CB1100F range from 1980 -1983.
Whilst nothing is R specific the similarities between the R and F bikes are many and the book is a great tool to have in any R owners workshop. Highly recommended.
They are regularly advertised on eBay and may even be obtainable from a local bookshop.
Details are:
Title. Honda CB900 – CB1100 Fours 1980 – 1983
Clymer Manual no M325
ISBN no. 0-89287-352-3