Chains with Double Tie Links
Chains with both two tie links and an out of sequence cutter require the machine to be operated in magnet mode. Adjust the feed limiting screw so that the feed pawl returns far enough to push the cutter after the double join and place the magnet on the chain as described earlier.
Chains with two tie links and the cutters in the correct sequence, require the machine to operate in the "OFF" mode as no change is required through the join.
Chain with irregular joins can be easily identified by:
Place on a table.
Extend them out so the drive links lie immediately beside each other and check the cutters are paired in sequence.
Repaired Chains
Chains which have had a cutter replaced require special attention. Because all of the chain cutters except the replaced cutter are worn or ground shorter than a new cutter, this replaced cutter must first be ground back to the same length as all other cutters.
Set up the chain as described earlier. Inch the machine over a section of chain that has worn cutters with the grinding wheel running so that the grinding wheel is just touching the cutters. Inch the machine up to the replaced cutter and very slowly inch the machine into the replaced cutter. This will bring all cutters back to the same length and allow the chain to be sharpened in the normal manner.