How to tell if a 2000 Suzuki gsx 600f katana is in time or not?

Question edited for clarity.

https://tinymicros.com/mediawiki/images/e/ed/Suzuki_2005_2006_Katana_GSX600F_Wiring_Diagram.pdf

from

https://www.google.com/search?q=2005+suzuki+katana+gsx+600f+wiring+diagram

..

Make sure the ECU is working properly. Check all fuses to make sure good. Check starter and battery wires for good connection and electrical current

Pull those spark plugs back out and check the gap, Charles. If they don't have the correct gap, they'll work poorly. If the gap is a LONG way from correct, they won't fire at all.

GSX 600F Katana 1989-1991
GSX 600F Katana 1989-1991
OEM Gear Ratio - 14T Front Sprocket / 46T Rear Sprocket OEM Chain - 530 Pitch / 112 Links

The power regulator may be at fault.

1. GSX 600F Katana - Motorcycle Specs

   www.motorcyclespecs.co.za/model/.../suzuki_gsx600f_katana%2098.ht...Suzuki GSX 600F Katana ... Wet Weight, 229 kg / 504.8 lbs. Fuel Capacity. 20Litres ... The original GSX600F was launched in 1988 as a sportsbike. At that time ...

ebay.co.uk

There are lowering kits available for the rear suspension then you need to drop the frt the same amount that you drop the rear,you can drop the frt by loosing the frt triple tree clamps and using a ruler let the forks come up through the same amount that you drop the rear(this will help keep the bike from over steer.