These states come from the cited public evidence, not from model-code patterns. Unknown is never treated as incompatible.
Bobbin
Reviewed — not established
Core system: Reviewed — not established
Compatible items: None established in current public evidence
The manual lists hook, bobbin case, and bobbin service items but no reviewed core class or non-substitution rule.
none · 0 relationships · 0 cited system traits
Needle
Reviewed — not established
Core system: Reviewed — not established
Compatible items: None established in current public evidence
The manual contains fabric-conditional needle sizes and accessory needles but no universal needle-system or type answer.
none · 0 relationships · 0 cited system traits
Presser foot
answered
Core system: screw_on_direct
Compatible items: None established in current public evidence
The manual directly states a screw-secured foot attached from below; no shank height or broader ecosystem is inferred.
system · 0 relationships · 1 cited system traits
View Presser foot evidence · 1 citation
Changing Presser Foot
(_ Presser bar
(_) Thumb screw
To change the presser foot, raise the presser bar.
Loosen the thumb screw, choose the proper foot and
insert from the bottom.
Tighten the thumb screw using the large screwdriver
to make certain the foot is secure.
Unknown is not incompatible. A missing answer means the current official evidence does not support one yet.
Specifications
Documented machine facts
presser foot
presser foot mount
screw_on_direct
View source evidence · 1 citation
Changing Presser Foot
(_ Presser bar
(_) Thumb screw
To change the presser foot, raise the presser bar.
Loosen the thumb screw, choose the proper foot and
insert from the bottom.
Tighten the thumb screw using the large screwdriver
to make certain the foot is secure.