Question about Miller Trailblazer 302 Welder Generator 907217 907216

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My trailblazer 302 has low output in a/c tig mode. if i set the amps at the max which is 213 the most i can get out of it is about 125 amps. it used to work fine . i have checked all of my leads and connectors , and tried using different remotes, i have also tried using a very short gound lead that is only about 10 ft long. none of this has made any difference. it works fine in d/c mode for stick and mig. the machine is about 5 years old. the problem started about 7 months ago and seems to keep getting worse.

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Posted on Jan 02, 2017

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SOURCE: no gas flow

You never mentioned switching the polarity, this must be done when switching between wire types, Connect polarity appropriately, for steel use dual mix carbon dioxide/argon and set flow to 25-30 and give it shot. Good Luck!

Posted on Apr 22, 2009

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SOURCE: i have an old mastercraft 110 volt ac stick welder

35 amp should do nicely however make sure the mains cable is of the correct size, better still, get a qualified Electricion to install it.
Usualy 30amp could be used but using 35amp gives you some reserve

Posted on Oct 09, 2009

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SOURCE: mp 65e, how to change

Here's the link, check page 27 for right voltage connection.

Posted on Feb 05, 2011

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SOURCE: I have a lincoln 140 pro mig welder.I am useing 35

Your Linner of the gun could have a kink in it.

Posted on Feb 19, 2011

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SOURCE: i have miller deltaweld 302 lead stays hot all


The problem could reside on the contactor, this part due to the heat and constant contact (that is the noice you hear everytime you strike an arc) sometimes it remains close. Check your owners manual and it is the numbered 21 on the part list.

Good luck

Posted on Jul 13, 2011

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