You shouldn't need to stop and restart a service to get it working, but if it works ....
You can start and stop services from an Elevated Command Prompt (i.e., "Run as administrator") using the NET STOP and NET START commands. See the example here: https://www.coretechnologies.com/blog/windows-services/essential-tools-for-windows-services-net-command/
The catch is that in order to run the command with administrator rights you have to create a batch file (*.bat) with the command, then create a shortcut to the batch file, then go into the properties of the shortcut and check the box to "Run as administrator."
Even then, however, when you double-click the shortcut you'll get the UAC prompt and the user will have to input the password for an administrator account.
If you don't want the UAC account to appear, there are ways around that as well.
Here's one: http://superuser.com/questions/788924/is-it-possible-to-automatically-run-a-batch-file-as-administrator
Before you do all of the above, make sure that the NET STOP command works for your Epson service. If it doesn't try the SC command (see http://stackoverflow.com/questions/133883/stop-and-start-a-service-via-batch-or-cmd-file)