I have an '04, 1000 & the owners manual says 24,000 km ( 14,900 miles) for a valve adjustment & spark plugs. Well since I just came back from a 6,000 km ( 3700 miles) ride in the Baja (mostly on the pavement) & the bike now has 16,000 km (9900 miles) on it I thought it was a good time for a valve set, plugs, change air filter & general good going over, all at once since the tank was off etc. My motor cycle shop (extremely talented non dealer) told me I was lucky I chose to check the valves then. All the valves clearances were less than specs & the exhaust valves had vurtually no clearance at all. He said that if I had waited until 24,000 km, I would have had burnt exhaust valves & a huge bill for repairs. The spark plugs were ok but while apart , do it all at once. During the Baja trip, I only found 1 loose bolt on the rear suspension & during the check up there were no other loose bolts or parts, so I think the bike is ok considering about a third of my mileage is on gravel roads & I ride double or have all the bags loaded a lot of the time.