2009 Suzuki 400 LTZ Quad Sport Service Manual, Page 153Get this manual
1D-11 Engine Mechanical:! CAUTION
Avoid removing the idle air screw (8)
Assembly Assembly is the throttle body in the reverse order of removalPay attention to the following points: Install the new O-ring (1)!
CAUTION
Replace the O-ring with new oneI933H1140030-01
CAUTIONI933H1140033-01
Never remove the throttle valve (9)