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35
Stitch length compensation
Requirement:
Slightly turn bush 1 (Fig.1) from its basic position (screw 2) (see chapter 20).
36
Eccentric hook shaft bearing
Requirement:
.1
Position hook shaft bearing 4 axially (screw 5).
.2
Turn hook shaft bearing to adjust backlash (screw 5).
.3
Adjust position of gear 6 (two screws 7).
32 PFAFF
The stitch length set at "3" must be the same length during forward and
reverse feeding.
If high accuracy is required, do not use "3" but the actual working stitch
length needed.
Clearance between hook point and centre of needle clearance cut must be
0.3 mm when the hook is loosened (screw 3) and is up against the oil ring (Fig. 2).
The backlash between the gear teeth must be only slight but still
perceivable.
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