does service task manage systemd timers or I need to use command instead?

I’d just try.. ideally it should use service puppet resource, which should use OS-specific provider. As service puppet resource can manage timers I’d expect it to work with bolt as well.. but better to try and see

It worked, thank you. I just used disable instead of stop action, so it didn't do what I wanted 🙂

yes service, also the systemd module provides nice things like https://github.com/voxpupuli/puppet-systemd/blob/master/manifests/timer_wrapper.pp