Please, you can forget this steps and move to the new angular/cli 1.3 setup: https://github.com/angular/angular-cli/wiki/stories-universal-rendering
or clone my repo and run the following commands:
git clone https://github.com/evertonrobertoauler/cli-universal-demo
npm run start
This repo is setup with angular/cli 1.3 as the steps described in the link above.