F130 Parts Substitution Card

This is the quick external-parts substitution card for the highest-value F130 front-end, wire-quality, and source-quality splits.

Use This Card When

known-good front-end consumables
known-good left-hand-thread seat and correct front-end stack order
known-good clamp and lead set
plain-steel 0.035 in wire baseline
stable 20 A outlet path with any extension cord kept within the official 25 ft limit before portable-power blame

Complaint branch	Swap first	If the complaint follows the part...	If the complaint stays with the machine...
erratic arc with normal feed	known-good front-end consumables	keep diagnosis in the torch front-end branch	move to trigger and control logic
no arc or severe stubbing after tip or nozzle work	known-good seat, correct front-end stack order, and correct tip size	keep diagnosis in the front-end assembly branch	move deeper only if the assembly is proven clean
severe stubbing or poor wire behavior	known-good wire baseline and feed path	keep diagnosis in wire quality and front-end setup	move deeper only if the baseline stays poor
complaint starts after changing wire size	restore factory `0.035 in` baseline or do a correct `0.030 in` conversion	keep diagnosis in setup and wire-size branch	move deeper only if the correct setup still fails
complaint only on generator or marginal branch	known-good stable outlet path	keep diagnosis in source quality	move to the machine only if stable power still fails
current-path heating or weak arc	known-good clamp and lead set	keep diagnosis in the current path	move deeper only after current path is proven

Stop if front-end correction restores the arc.
Stop if seat damage or wrong front-end order explains the complaint.
Stop if the complaint disappears on stable utility power.
Stop if the cord path exceeds the official 25 ft or full 20 A baseline.
Stop if restoring the correct wire-size baseline removes the complaint.
Stop if the wire requires DCEP or is 0.023 in, because that is outside the intended F130 baseline.
Stop using the card and open the full guide if front-end, wire, and source proving are already clean.