2009 Suzuki 400 LTZ Quad Sport Service Manual, Page 340Get this manual
3A-4 Drive ChainDrive TrainDrive Shaft:
Engine Sprocket Removal and Installation
Removal 1) Remove the engine sprocket cover (1)
B933H23106003
4) Loosen the chain adjuster nut (4) and rear axle housing bolts (5) to provide additional chain slack5
I933H1310004-01
5) Remove the engine sprocket (6) with drive chainI933H1310001-01