Pfaff 1471 E1 Instruction Manual page 91

Adjust the needle height according to requirement 2.
Move both hook posts according to requirement 1 and tighten screws 8.
Remove the adjustment pin from the hole 9.
Observing the play of the bevel pinion, tighten screws 2 and 4.
Bring retaining collar 11 to rest on bevel pinion 12, and tighten screws 3.
Bring retaining collar 13 to rest on bevel pinion 14, and tighten screws 5.
Tighten screws 7 to both sides of the post.
Position needle guards 10 according to requirement 3.
When changing the hook, ensure that markings
15 and 16 are both on the same side.
Adjustment
15
16
13 - 12