How to adjust valves on a royalstar venture - 2005 Yamaha Royal Star Venture

The Venture uses a shim over bucket design. The clearance between the cam lobe and shim is measured and if out of specification, a shim of different thickness neeeds to be installed in place of the previous one. The shim change operation requires a special tool which sits on the hex portion of the camshaft and depresses 2 valve buckets at a time. This produces a gap to allow the shim to be removed and another of different thickness installed.
Sometimes the clearances will be fine and no shim changes required. A shim kit is handy as it has a variety of thicknesses so the job can be completed quickly, otherwise the shims need to be purchased from a dealer, possibly waiting for the order.