If you don't have access to the tools, you can take the cam off (which means removing timing belt). It's not super difficult but obviously easier if you have the tool. If you're servicing the timing belt anyway, though...
Also assume you will need a new valve cover gasket. If you do remove cam, cam seal also.
Personally I'd pull the cam anyway because under the shim buckets you will find brittle remnants of valve hushers! Every time!