I removed the shooter and checked it out. Doesn’t seem to be any issues or anything in the path to slow the balls. Not sure if it might be the motor...
I found out that this is a Nippon Game Company Pachinko. The 2 Japanese symbols just to the right of the word Nippon in orange means Nippon Game. Was...
If you like it and want to try repairing it, go for it. If you don't care about it to put effort and/or money into it, put it on Facebook Marketplace...