If your internet connection and hard drive can handle a >150MB .pdf download, go to Dag's Valkyrie Norway site, look down the left side 'til you find Technical, and hit the bottom link to download the Service Manual. Handy to have on the laptop.
Thanks very much, Dave. Managed to find my owner's manual when the Alzheimer's receded a bit, but the service manual is much more useful and contains the chart of service items I was looking for.