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Caution in disassembling Caution in assembling
1. For removing/installing the gear box cover 6, be sure to refer
to the item “4.- (4) Removing/installing the gear box cover”
and carefully perform the work.
™ The horizontal feed cam and
hook driving gear are mounted
in the gear box (large).
In the case where centering and
adjustment of play of the
aforementioned components
are not securely performed
when assembling and adjusting,
seizure due to the torque of the
sewing machine, abnormal
heat, or defective return of the
lever will be caused.
™ Oil used in gear box
Part No. : MDFRX2700C0
™ Hook drive gear (small) is a selective part.
Part No. Name of part Dimention (diameter)
23538903 Hook drive gear (small) S Small
23536303 Hook drive gear (small) A
23536402 Hook drive gear (small) B
23536501 Hook drive gear (small) C
23536600 Hook drive gear (small) D
23536709 Hook drive gear (small) E
23536808 Hook drive gear (small) F Large
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