Brother LH4-B800E Service Manual download pdf (Page 58)

LH4-B800E

3 - 3

3. ASSEMBLY

Install the screw q to the base plate w. Install the lever assembly e and the lower thread retainer r to the base plate

w with the collar t and the screw y. Install the lower thread retainer r to the lever assembly e with the two screws

Insert the roller of the lever assembly e into the cam groove of the knife driving lever i.

Install the knife driving lever i to the base plate w with the shoulder screw o, collar !0, washer U !1 and washer D

!2.

Install the lower thread clamp plate assembly !3 to the base plate w with the shoulder screw !4, plain washer !5 and

curved washer !6. Install the lower thread presser !7 to the base plate w with the shoulder screw !8 and the screw !9.

Install the fixed knife set @0 to the knife driving lever i with the two screws @1.

Install the needle plate @2 with the pan screw @3 so that it is parallel to the base plate w.

Provisionally install the base plate w to the top of the bed with the four screws @4.

While pushing the base plate w to the right so that the needle @5 is in the center of the needle hole @6 in the longitu-

dinal direction, securely tighten the screws @4.

Connect the lower thread trimmer link assembly @7 and the knife driving lever i with the shoulder screw 4.37 @8.

Install the length feed plate @9 to the feed arm support #0 with the bolt #1 and washer #2.

Install the feed presser plate #3 with the screw #4 so that the feed mechanism moves easily when it is moved back and

forth by hand.

BackForward

Apply grease to cam groove i

Apply grease to !0

Press down

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Brother LH4-B800E Service Manual Page 58