Hooray thanks everyone! I got it going!! A little bit of trial and error but all good now! Thank you!!

There is a fair amount of pink gunk, grease I guess? Between the white gears inside which also do not move manually. I tried to take some of it off but again I'm. It are what is supposed to move and what isn't.
Hmmm.

Hi there thank you for he help! I don't have a meter to check the engine but I did watch the video and open up the engine to see if anything looked obviously wrong. Should the wheels move freely when you spin them by hand? Mine do not budge with the cover on but with the cover off they moved jerkily. When k reassembled and put it on the track smoke started coming out of the smoke stack but still no movement...

Update: we had an older HO engine and we just tried that and it worked (not well but still it worked.) tried the new engine again and nada.

Hi there- brand new to model train ownership and we set up our Chattanooga HO gauge train tonight and the darn thing won't go. The track is totally smooth, we followed all the troubleshooting steps in the manual. The power source seems to work, the speed controller makes a quiet buzz when turned on, but absolutely no sound/movement from the engine.its securely in the track, and the red cable is in securely. Any advice??