Suzuki Wagon R Manual page 4005

7A5-28 MANUAL TRANSAXLE (Z12XEP ENGINE MODEL)
6) Install 3rd & 4th gear hub assembly (1) onto main shaft using
special tool and hydraulic press.
Special tool
(A): 09924-08310
7) Install new snap ring to main shaft (1) using snap ring plier.
1
8) Install needle bearing for 4th gear to main shaft.
9) Install synchronizer ring (3) and 4th gear (2) to main shaft.
10) Install spacer washer (1) onto main shaft so that grooves
(arrows) point towards 4th gear.