2009 Suzuki 400 LTZ Quad Sport Service Manual, Page 413Get this manual
Manual Transmission:
Gearshift cam bearing Inspect the gearshift cam bearings, left and right for abnormal noise and smooth rotationReplace the bearing if there is anything unusualRefer to "Transmission Oil SealBearing Removal and Installation (Page 5B-10)"
I649G1520056-03
Gearshift fork groove width Measure the gearshift fork groove width using the vernier calipersSpecial tool (A): 0990020102 (Vernier calipers (120 mm, 200 mm)) Gearshift fork groove width Standard: 5.0 5.1 mm (0.197 0.201 in)
I933H1520029-01
Gearshift cam Inspect the gearshift cam groove for abnormal wear and damageIf any defects are found, replace the gearshift cam with new one