Firepower MST 140i, Operating Manual

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Firepower MST 140i
Manual 0-53 38 3-17 INSTALLATION, OPERATION AND SETUP
3.13 Installing 4" (100mm) Diameter Spool
As delivered from the factory, the Power Source is fitted with a Wire Spool Hub which accepts a 8" (200mm) diameter spools.
In order to fit a 4" (100mm) diameter spool assemble parts in the sequence shown below in Figure 3-11.
Adjustment of the nut with nylon insert will control the MIG Wire Spool Brake. Clockwise rotation of this nut with nylon insert
tightens the brake. The brake is correctly adjusted when the spool stops within 4" (100mm) to 8" (200mm) (measured at the
outer edge of the spool) after MIG Gun trigger is released. Wire should be slack without becoming dislodged from the spool.
CAUTION
Overtension of brake will cause rapid wear of mechanical WIREFEED parts, overheating of electrical components
and possibly an increased incidence of electrode wire Burnback into contact tip.
Art # A-12443
Friction Washer
4”
（
100mm
）
Diameter spool
Nut with
Nylon Insert
Spring
Plastic Spacer
Brass Flat
Washer
Flat Washer
Figure 3-11: 4" (100mm)Diameter Spool Installation