Neutral Point Of Top Knife Movement; Setting Top Knife At Highest Point; Positioning The Rear Top Knife And Hook Knife; Lateral Position Of The Rear Top Knife To Hook Knife - Pfaff 3822-1/22 Instruction Manual

50.6

Neutral point of top knife movement

Requirement:
Switch of trimming mechanism (key
Set link 14 (Fig. 9), while turning the balance wheel, so far forward or backward that the top
knives become motionless (screw 15).
50.7

Setting top knife at highest point

Requirement:
Adjustment: eccentric screw 16 (screw 17).
50.8 Positioning the rear top knife and hook knife (after changing top knives)
(For adjustments required after a new top knife bracket is fitted, please see chapter 57.11.)
50.8.1

Lateral position of the rear top knife to hook knife

Requirement:
.1 Remove front top knife 9 (Fig. 10, screws 18).
.2 Loosen knife retaining screws 8 (Fig. 12) and position rear top knife to side according to
requirement.
.3 Continued on page 56.
54 PFAFF
When the trimming mechanism is switched off, the top knives must be
motionless.
The top knife must be set at the highest point of its stroke
The rear edge of rear top knife 7 (Fig. 11) must be flush with hook knife 20
(see arrow in Fig. 11).
, LED off, Fig. 8).