Tweco 400 Ultra-Cut(March 2013) - Manual (Page 135)

Manual 0-5163 7-3 TORCH INFORMATION
ULTRA-CUT 400
7.03 Parts Wear
Replace the Gas Distributor if it is charred or cracked.
Replace the Gas Distributor if the flange is damaged in any way.
Replace the tip and/or electrode if they are worn.
Good Electrode Worn Electrode Good Tip Worn Tip
Art # A-04745_AB