Looks very clean 
If you haven't already had a look at the FAQ for the Gen1 Fazer in the sickies at the top of this section I would encourage you to do so, as a new owner you should find the information useful. I would make sure the EXUP valve is present and working correctly servicing is often neglected leading to the valves becoming seized, this may or may not be the cause of your problem but is something you should investigate early on and keep on top of. The FAQ has a link that takes you to an EXUP servicing guide.
I believe the stock jetting is lean at low revs and this will be made worse if you have a more free flowing aftermarket air filter so with stock jetting the OEM filter is recommended and may help your issue if you have an aftermarket 'performance' filter.
If you haven't already had a look at the FAQ for the Gen1 Fazer in the sickies at the top of this section I would encourage you to do so, as a new owner you should find the information useful. I would make sure the EXUP valve is present and working correctly servicing is often neglected leading to the valves becoming seized, this may or may not be the cause of your problem but is something you should investigate early on and keep on top of. The FAQ has a link that takes you to an EXUP servicing guide.I believe the stock jetting is lean at low revs and this will be made worse if you have a more free flowing aftermarket air filter so with stock jetting the OEM filter is recommended and may help your issue if you have an aftermarket 'performance' filter.