HappyJapan HCD2-1501-40, Maintenance Manual

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3-6-3 Exchange of fixed knife
1. Remove needle plate.
2. Remove fixed knife.
3. Exchange fixed knife.
4. Tighten fixed knife pushing to forward as full as possible.
Press the fixed knife by off set screw driver.
<Caution>
In case moving knife and the left side of fixed knife
overlaps excessively when closing, adjust the position of
fixed knife slightly to the right direction.
5. Referring to [3-6-4 Adjustment of moving knife and
fixed knife],check how well thread is cut and adjust,
then finish this process.