Suzuki GA413 Service Manual page 552

10) Remove bearing washer, ball, low gear, low synchronizer ring
and needle bearing from main shaft.
11) Remove circlip retaining low speed synchronizer hub on main
shaft.
12) [In the case of press-fitting hub]
CAUTION:
Make sure to use flat side of puller to avoid causing
damage to reverse gear teeth.
Drive out low speed synchronizer sleeve and hub assembly (1)
together with 2nd gear (2) and low speed synchronizer ring by
using puller (3) and hydraulic press (4).
[In the case of loose-fitting hub]
Remove low speed synchronizer sleeve and hub assembly
(1), low speed synchronizer ring and 2nd gear.
13) Remove 2nd gear needle bearing.
14) Remove high-speed synchronizer hub circlip (1).
MANUAL TRANSMISSION 7A-13