Forney 140 MP Quick Start Manual Download Page 4

STICK TROUBLESHOOTING TIPS

QUESTIONS OR TROUBLE? Contact Forney Industries at 1-800-521-6038 

[email protected] • askforney.com • forneyind.com

• Generator OK with continuous 

output > 4,000 W

• Extension cord: #12 AWG or 

larger; 25’ (8m) or shorter

120VAC, 20A 

outlet, 

30A breaker 

recommended 

*Performance may vary by brand

Connect to Input Power

Recommended electrodes

4.

6.

FIND STICK WELDING TIPS AT WWW.ASKFORNEY.COM

Adjust amperage per 

chart on the inside of 

the welder

5.

Electrode

Diameter

5/64”

3/32”

1/8”

E6010

X

E6011
E6013
E7014
E7018

X

E308L

Ni55

Connect electrode 

holder and ground 

clamp according to 

desired polarity

3.

Usually 

DCEP - 

Electrode 

Positive 

Verify machine is plugged in and on. 

See manual.

Both LED lights off

Duty cycle exceeded or 

insufficient air flow. Allow 

machine to cool. Ensure vents are 

clear of obstacles. See manual.

Both LED lights on

• Usually due to low input power.

• Welder should be only thing plugged into circuit.

• Avoid using extension cords. If one must be used, it must be #12 AWG 

or larger; 25’ (8m) or shorter.

• Generators must be 4,000 W continuous output and not have a 

low-idle function (or have it disabled).

Low weld output or poor fusion

Use 1/8” diameter electrodes or smaller.  Some 1/8” may draw too 

much amperage.
Trying to weld single pass on material larger than ¼” thick is not 

possible with this machine. Multi-pass recommended for thicker 

materials.
Welder should be the only thing plugged into the circuit.

Frequently tripping circuit breaker or exceeding 

duty cycle

Connect ground clamp to clean, bare metal. No 

rust, paint or other coatings. Attach the ground 

clamp directly to the workpiece if you are 

experiencing issues.

Workpiece grounding

• Not recommended for this machine.
• Requires more amperage on Stick than this machine is designed to output.

STICK QUICK START GUIDE

 140  MP WELDER 

(NOT RECOMMENDED FOR ALUMINUM)

CAT# 271

Read user manual

Select         process

2.

1.

Aluminum welding

EN_v1-4

Electrode Holder

Ground 

Clamp

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