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14. How to remove and attach the chain looper base
1. Remove the front cover safety device connector
and remove the bed cover.
2. Remove the 3 screws and remove the housing of knee lifter unit.
(It is easier for working in case the housing of knee lifter unit is
removed and the machine is placed in flat.)
3. Remove set screw of threading pipe holder
and remove threading pipe holder.
4. Remove the Chain looper threading pipe set.
＊Be careful of the spring when removing
the Chain looper threading pipe set.
5. Remove the link set screw.
6. Remove the spring.
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