mechanic help!!!

[oubowtie06]

i have a 2005 yz250f four stroke and i want to change the motor oil the plug and the filter anyone have a diagram or some helpful instructions to do these tasks this is my first bike so if you could be very descriptive it would help alot thanks.

 

[Rich Rohrich]

Yamaha provides an electronic copy of the manual here :
http://www.yamaha-motor.co.uk/community/service/manuals.jsp