Where is the fuel filter located on a suzuki gs 500

bad question do you mean 4000 rpm .
fuel starvatin , blockage could be filter on fuel line or shut off in carb.

chang the spark plugs oil filter and air filter thenput fresh fuel in it....then post again....

Valves could need adjusting, try tuneup first. New plugs and wires, new air filter and clean fuel filter.

sounds like fuel problem. Check fuel filter and lines

If you have good fat spark and there was no undue valve train noise prior to this problem, then your problem lies with fuel delivery, or restriction of it.

Air/fuel mix has to be right at start up and as such, all of the inlet system should be inspected or serviced. From air filter inlet, filter, manifolds. Fuel tap, fuel filter, fuel lines, float levels, float needle and seat, pilot and main jets, needle and slide.

Start with filters, check needle/slide are rising in unison and fuel is flowing freely to floatbowls. Good idea to take drains out of carby's and spray some aerosol carby cleaner down fuel lines till it flushes thru' carby' drains. Check carefully condition of inlet manifold providing an airtight seal. There is a sitelink below that has exploded views and part names for all sections for your bike to assist.
Cheers.

http://www.cmsnl.com/suzuki-gs500-2000-euy_model13470/partslist/

it is in the front lower portion of the motor.

There is a manual from 89 - 99, a 91 one in German, and a 92 manual. Take your pick, they are all free: http://www.carlsalter.com/motorcycle-manuals.asp

Use 10w40 motor oil. Any major brand; Pennzoil, Mobil, Shell, etc.
2.7 quarts w/o filter change.
3.1 quarts with filter change.
3.4 quarts if doing engine overhaul

Pleas rate this answer. Four diamonds would be nice.
Thanks kolejoca!

The difference between the E and standard model is the fairing and bodywork. the E will have more of the latter.