Yamaha YZF-R6(V) 2006 Service Manual page 315

THROTTLE BODIES
Throttle body joint bolt
10 Nm (1.0 m·kg, 7.2 ft·lb)
NOTE:
Be sure to install the throttle body joints with the
"L" mark onto the throttle body openings for cyl-
inders #1 and #2 and the joints with the "R" mark
onto the openings for cylinders #3 and #4.
R
L
1
7-12