White/Maruzen Super Lock Model 503 (503W-3) serger

These are pics of a White-brand serger that a very nice person gave to me.  When turning the hand wheel, it stops at one point, no matter which direction it is turned.  Opening up the bottom for inspection revealed that the plastic gear that drives the upper looper is cracked.  The below pictures document the problem and the machine identification markings.

Another person who has one of these.

Service manual.

2 Responses to “White/Maruzen Super Lock Model 503 (503W-3) serger”

  1. Yammy Says:

    MoRuqian ah MoRuqian, ni zhen shi ge nerd!

  2. Eric Says:

    Thanks for sharing the service manual.

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