pete99 wrote:Ok. thanks for the answer
My friend buy this bike last spring, so we dont have nothing documents with come the bike. bike have now 62 000km on the clock.
i do maintanance service this bike now and change plugs, air-filter etc... so its ready to next season.

i was shocking i dont have 18mm spark plug socket

rare size
is there something special things on the bike what should look? when i have now striped all away.
So you are in between the recommended service intervals. According to my calculations the next service check should be at 77,000km (48,000 miles) for valve clearances.
You could do with a tool kit which has a spark plug spanner in it, that does the job okay.
The main thing that could fail you is the CCT's (cam Chain tensioners), also the rectifier if your bike has one fitted that doesn't have any cooling fins on it. The rectifier is located under the seat plastic's on the rear brake pedal side of the bike. You can see it or at least feel it if you remove the seat.
I've just noticed your bike is a 2005 model, that should mean your bike already has a rectifier with cooling fins
Another thing worth checking is the rear suspension linkage and swingarm bearings, have a read here:-
http://www.vtr1000.org/phpBB3/viewtopic ... 31&t=11809
Chris.