Hi,
Whilst performing my own services (now too busy/lack of tools) I always changed the oil around 5000K's, but would not check the vales for 10,000K's. I have to say at that point the bike was struggling with backfires/etc and the tappets were quite noisy - I was desparate to get the valves checked.
As the effort in checking the valves is (virtually) the same for a service - I just be done with it and get them done. I always used a good branded semi-synthetic oil.
I'm sure you can go longer, and it depends on the conditions really - I would be more prone to service in a city than on the open road.
My local KTM garage always swears by the 5K rule - but KTM garage services are very expensive. mmmm.
Regards
James
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KTM LC4 640 Adventure-R 2001
Previous bikes...
KTM Duke II 2000
Kawazaki ZX-6R 1998
BMW F650 1996
+ others...
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