2006-2009 Suzuki LT-R450 Service Manual, Page 206Get this manual
FUEL SYSTEM AND THROTTLE BODY
Tighten the fuel injector mounting screws to the specified torque
Fuel injector mounting screw: 3.5 Nm (0.35 kgf-m, 2.5 Ib-ft)
Apply thin coat of the engine oil to the O-rings Install the fuel delivery pipe CD to the injector (2)
ICAUTION I
The removed O-rings must be replaced with new ones Never turn the fuel delivery pipe while pushing it