Originally Posted by
operator
You have to hold the derailleur cage OUTwards and THEN tighten the cable on. You'll never get satisfactory cable tension otherwise.
I agree this is not correct. The initial cable tension is set with the derailleur inward against the inside limit screw stop and (VERY important) the shifter set in the most inward and relaxed position.
If its a STI or Ergo, push the release lever or button several times to be sure the shifter is in it's lowest gear setting before reattaching the cable.