Service Manual
Removal:
Replacement:
1. Remove the free-arm extension table (only 2802, 2808, 2809 and 2818 models), all
the covers, needle plate and the bobbin case. For other models (Flat Bed) remove
slide plate too.
2. Remove feed dog screws (F) and feed dog (E).
3. Remove position plate screws (
I
) and (K).
4. Remove position plate (J).
5. Remove lock bushing (B) and spring (C).
6. Draw retaining plate (A) up and out of the machine.
7. Loosen screw (P) in drive pulley (O).
8. Remove hook (L) by driving it up.
9. Remove hook washer (M), pulley (O) and pulley washer (N).
1. Insert washer (M) inside the hook shaft and then, insert hook (L) into the machine
bed bushing.
2. Insert pulley washer (N) and pulley (O) with the hook drive belt attached on to the
hook shaft pulley.
3. Locate pulley set screw (P) on the flat of the hook shaft.
4. While holding hook (L) down with finger pressure, press up lightly on pulley (O) and
tighten screw (P). Check hook (L) for end play. There should be 0,00 mm - 0,05 mm
end play. Check for free rotating.
5. Replace retaining plate (A) with spring (C) lower leg turned down, insert this leg into
the slot of retaining plate pin. With the flat portion of lock bushing (B) turned up,
insert and push it into the pin, till reaching the pin groove.
6. Replace position plate (J), screws (K) and ( I ) and the bobbin case. Adjust clearances
between bobbin case and position plate (J).(See pages 84-85).
7. Replace feed dog (F) and feed dog screws (E). Adjust feed dog centralization and
parallelism (see pages 92-93). Check feed dog throw and adjust if necessary. (See
pages 94-95).
8. Adjust hook timing (See pages 80-81).
9. Check needle to hook relationship and adjust if necessary. (See pages 70-71).
10.Check needle bar height and adjust if necessary. (See pages 62-63).
Hook
34
Rev. n .
o
358487-001 Mar./2005
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