My husqvarna warranty contract says that proper maintenance performed by the owner will not void the warranty. And has no mention of the first service being considered different. I'd say as long as you keep receipts and document you maintenance it should be fine.As far as the 1st service goes, I have always heard that the first and only the first needs to be done at the dealer. (Warrantee - for any brand of bike - to rule out manufacturing defects should the bike fly-off something)
Depending on your area, an annual trip to the dealer will extend your HQV warranty by 1 year up to a max of 8 years. (Including free rental bike)
As far as the service reset goes, doesnt it show in the manual how to reset it completely? I know it works on the 401...
...keeping in mind that even the dealer couldnt reset the right interval at the 600 and it only worked right after the second interval reset by the dealer.