2009 Suzuki 400 LTZ Quad Sport Service Manual, Page 154Get this manual
Engine Mechanical: NOTE Make sure the throttle valve smoothly open and close For TP sensor setting procedure, refer to "TP Sensor Adjustment in Section 1C (Page 1C-4)" 1D-12
Install the fuel injector (4) by pushing it straight to the delivery pipe (5)
CAUTION
Never turn the injector (4) while pushing itNOTE Align the coupler "C" of injector with boss "D" of the delivery pipe
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Apply thin coat of engine oil to the new cushion seal (2) and the O-ring (3)I933H1140037-01