Forney 85650 User manual
4A. 4B.
4C.
SPOOL GUN QUICK START GUIDE
250 MULTI-MACHINE SPOOL GUN
ITEM# 85650
Read user manual
2.
4.
1.
Machine selection
2B. 2C.
Machine setup. If using a Forney multi-process (MP)
machine, ensure process selector is set
to “MIG”.
MIG welding aluminum is a DCEP+
process.
Forney®220 MP:
4D.
Forney®190 MP:
Open the back-end housing on the power
cable of the spool gun by turning each of the
end caps (cap 1 and cap 2) counterclockwise.
This will allow half of the housing to be
removed.
Inside of the housing, you will find
a small DIP switch. If using a
Forney 270 MIG or 242 Dual MIG,
set the switch to the “On” position.
Set the switch to the “Off” position
for use with all other Forney
machines.
2D.
Re-assemble and close the
back-end housing.
3A. Install a fresh spool of welding wire into the spool
compartment.
3C.
Close and apply tension to the wire feed mechanism. Ensure that the wire is feeding through the bottom groove of the drive roller.
NOTE: More tension is not better! Apply just enough wire feed tension to keep the wire feeding smoothly and continuously.
Guide the free end of the welding wire through the wire feed
mechanism.
3B.
SPOOL GUN TROUBLESHOOTING TIPS
FIND MORE INFORMATION AT FORNEYIND.COM
forneyind.com
To prevent burn-back issues, always use contact tips that are one size larger
than the selected welding wire. For example, if using 0.030” wire, use an
0.035” contact tip
TIP #1
When welding aluminum, ALWAYS use 100% pure Argon shielding gas
TIP #2
Use a slight push angle when using a spool gun
TIP #3
ITEM
1
2
2
2
3
Description
Gas Nozzle
0.030” Contact Tip
0.035” Contact Tip
0.045” Contact Tip
Gas Diffuser
Industry Standard #
TWECO Style 23-50
TWECO Style 14H-30
TWECO Style 14H-35
TWECO Style 14H-45
TWECO Style 52FN
Always use 100% Pure Argon when welding aluminum
Basic MIG Settings for 4XXX Series Aluminum
Material Thickness Material ThicknessWire Diameter Voltage (V) Wire Feed Speed (IPM) Wire Diameter Voltage (V) Wire Feed Speed (IPM)
22 GA
20 GA
18 GA
16 GA
14 GA
12 GA
1/8”
3/16”
1/4”
3/8”
1/2”
3/4”
0.030
0.035
0.047
0.030
0.035
0.047
0.030
0.035
0.047
0.030
0.035
0.047
0.030
0.035
0.047
0.030
0.035
0.047
0.030
0.035
0.047
0.030
0.035
0.047
0.030
0.035
0.047
0.030
0.035
0.047
0.030
0.035
0.047
0.030
0.035
0.047
13.5
13.5
N/A
13.5
13.5
N/A
14.5
14
N/A
15.5
15
N/A
16.5
15
N/A
17.5
17
N/A
200
150
N/A
240
220
N/A
290
220
N/A
340
250
N/A
370
270
N/A
425
325
N/A
25
25
20.5
25
25
20.5
28.5
27
27.5
29
28
27.5
N/A
29
28
N/A
N/A
30
450
410
200
500
450
220
550
525
250
600
550
260
N/A
600
280
N/A
N/A
290
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