Miller HF-251-2 Owner's Manual - Page 21
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SECTION 4 – MAINTENANCE & TROUBLESHOOTING
4-1. Routine Maintenance
3 Months
Unreadable
Disconnect all power before maintaining.
Tape Or
Replace
Cracked
Cables
Replace
Labels
Clean
And
Tighten
Weld
Terminals
3 Months
Replace
Cracked
Parts
Gas Hose
6 Months
OR
During Heavy Service,
Clean Monthly
ST-155 457
14-Pin Cord
Torch Cable
Adjust
Spark
Gaps
Blow Out
Or
Vacuum
Inside
OM-611 Page 17