2003 Bombardier Outlander 400 Factory Service Manual, Page 135Get this manual
Subsection 09
Section 03 ENGINE (CYLINDER AND HEAD)
R400motr89A
Valve seat Valve face (contact surface to valve seat) Turn valve while pushing against cylinder head Valve seat angle 45
R400motr90A
NOTE: Ensure to seat valves properlyApply marking paste to ease checking contact patternRepeat procedure until valve seatvalve face fits together