Brother SB3734T Service Manual page 59

Disassembly Driving mechanism
2. Pull out the feed adjusting lever shaft to remove the differential adjusting lever.
3. Remove the retaining ring E5 from the feed adjusting lever shaft.
4. Pull out the pin spring roll AW2 to remove the feed adjusting gears from the feed adjusting lever shaft.
5. Remove the retaining ring E4 to pull out the differential dial stand assy.
Differential adjusting lever
Retaining ring E4
Differential dial stand assy
Retaining ring E5
Feed adjusting lever shaft
Feed adjusting gears
Pin spring roll AW2
Fig. 2-5
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