Suzuki WagonR+ RB310 Service Manual page 1095

7B1-130 AUTOMATIC TRANSAXLE (M13 ENGINE MODEL)
32) Remove fluid reservoir LH plate (1).
33) Turn over transaxle and remove rear cover assembly (1).
34) Remove reverse clutch drum thrust bearing (1).
NOTE:
If reverse clutch drum thrust bearing is not found, it may
have been taken out with rear cover assembly.
35) Remove 2nd brake gasket (1).