Brother LH4-B800E Service Manual download pdf (Page 16)

LH4-B800E

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1. MECHANISM DESCRIPTION

1-8-1. Lower shaft and rotary hook lubrication

1. The oil which is drawn up by the wick q is supplied to the lower shaft w.

2. The oil which is drawn up by the wick e passes through the felt r and the rotary hook joint t to the felt y, where

it is supplied to the rotary hook u.

3. The oil that is supplied to the rotary hook u can be adjusted by turning the screw i to vary the amount by which

the rubber presser o presses down on the collar !0 that the wick passes through.

Less

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Brother LH4-B800E Service Manual Page 16