OM-350 Page 24
SECTION 4 – MAINTENANCE & TROUBLESHOOTING
4-1. Routine Maintenance
3 Months
Clean
And
Tighten
Weld
Terminals
Replace
Unreadable
Labels
14-Pin Cord
Gas Hose Torch Cable
Replace
Cracked
Parts
Adjust
Spark
Gaps
3 Months
Tape Or
Replace
Cracked
Cables
See
Section
9
– –
2-12
4-2
– –
ST-127 872-A
6 Months
OR
During Heavy Service,
Clean Monthly
Blow Out
Or
Vacuum
Inside
––
4-2. Adjusting Spark Gaps
Ref. ST-144 405-C
5/32 in
Tools Needed:
0.012 in (0.305 mm)
1
4
3
4
3
2
Y Turn Off power before ad-
justing spark gaps.
Remove cover plate.
1 Tungsten End Of Point
Replace point if tungsten end dis-
appears; do not clean or dress
tungsten.
2 Spark Gap
Normal spark gap is 0.012 in (0.305
mm).
If adjustment is needed, proceed as
follows:
3 Adjustment Screws
Loosen screws. Place gauge of
proper thickness in spark gap.
4 Pressure Point
Apply slight pressure at point until
gauge is held firmly in gap. Tighten
screws to 12 in/lbs torque (overtigh-
tening will deform plastic base). Ad-
just other gap.
Reinstall cover plate and close ac-
cess door.
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