Picked up one of these off ebay. It was turning very rough and sticking when I got it. Some idiot had 50# test on the spool. My initial guess was the gears are stripped. After cleaning it up and regreasing I noticed that a few of the teeth on the gears are rounded just a tad and particularly in one spot when winding. So this reel was a loss and I will keep it for parts I recon.
One thing I had a question on if anyone can help is according to the schematic the spool gear is combined with the spool as "one piece"? I just wanted to make sure that it doesn't come out of the spool? I would have to have a spool and the drive gear to make it work again, unless I am missing something here.
found the schematic! there is no pinion gear listed, so i think it's at the base of the rotor as a single unit.
https://www.reelschematic.com/wp-content/uploads/schematics/Daiwa/Spinning/DAIWA%20SPINNING%207290D(75-035).pdf (https://www.reelschematic.com/wp-content/uploads/schematics/Daiwa/Spinning/DAIWA%20SPINNING%207290D(75-035).pdf)