Sa 200?

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Picked up an 81 sa 200 and it appears to be in pretty good shape.Runs 7018 like butter but, I'm struggling to keep a strong arc going when I'm whipping the 1/8th 6010. Running it normally on 75-80 amps.Also struggling to keep it lit while trying to burn a root into pipe. I turn it up and it simply blows through. I turn it down and it goes out while in the hole.Been using a miller, and I can pull the electrode about an inch from the surface and it maintains the arc. This Lincoln loses the arc just centimeters from the metal.I'll have some pics soon.Also, which plugs can I pick up from the local autoparts store?Thanks,john
Reply:Run a cumalator stone on it and while your there check that the brushes are wearing the same and none are stuck.1990 SA 200Miller 225  Rip Miller302Miller 135Lincoln 200 MigHypertherm 600 PlasmaPlasma Cam Cutting TableMikita Cold SawJL Welding Tx . com
Reply:I've got an sa 200 like that also, not as severe though.    I never could seem to figure out why the arc pops out.    One thing that improves the ability for holding a longer arc is having your fine adjustment as high as possible.    There is a considerable amount amperage overlap on the 5 position selector using the fine adjustment.     example: If you have your coarse adjustment set in the 2nd lowest position and your fine at number 30 or 40, you can get the same amperage by setting the coarse adjustment in the lowest position and turn the fine to 90 or 100.    By setting your fine in the higher range enables you to hold a longer arc w/ 6010, and noticeably so.     If your using lincoln red 6010, try some grey lincoln 6010 and just maybe youll see a tiny improvement.
Reply:Going to run it by a shop here and see if they can do a basic tune upon it...Appreciate the help
Reply:Originally Posted by jsm11Picked up an 81 sa 200 and it appears to be in pretty good shape.Runs 7018 like butter but, I'm struggling to keep a strong arc going when I'm whipping the 1/8th 6010. Running it normally on 75-80 amps.
Reply:Geezer, mine can...and after I get finished with it, it should do even better.Esab Migmaster 250Lincoln SA 200Lincoln Ranger 8Smith Oxy Fuel setupEverlast PowerPlasma 80Everlast Power iMIG 160Everlast Power iMIG 205 Everlast Power iMIG 140EEverlast PowerARC 300Everlast PowerARC 140STEverlast PowerTIG 255EXT
Reply:I got this from AWS forum and this seems to be what your problem probably is. There are several ways to this, one of them involves vinegar. According to the people that are supposed to know, this is the correct way it's done. Your machine, you decide.Cleaning the CommutatorIf you have not done so already, remove the band and inspect each brush to insure that they are seated properly...Using a garden hose, allow a trickle of water to flow over the commutator of the main armature on high idle with no load.*At this time, run your brush seating stone across the surface of the cummutator.*Allow the machine to run for 5-10 minutes.*Turn the water and your machine off and check all of your brushes again.*If the brushes are still not seated, repeat the process.*Once seated, remove the hose and run your machine for another 5-10 minutes to dry.*The commutator will glaze over with a chocolate color and this is what you are looking for.DO NOT CLEAN THE COMMUTATOR AGAIN!*Weld with you machine and see how it performs.If it is still too cold,hot, or not stable, then your RPM's and rack will need to be adjusted.-----------------------------------------------------------------Only when the last tree has died and the last river has been poisoned and the last fish has been caught will we realize we cannot eat money.                                         -Cree Indian ProverbSA 200 LincolnVictor Torches