Hi, Roadstar1761 the ignition circuit cut-off system comprising of the side stand switch, clutch switch and neutral switch has the following functions:
a. It prevents starting when the transmission is in gear and the side stand is up, but the clutch lever is not pulled.
b. It prevents starting when the transmission is in gear and the clutch lever is pulled, but the side stand is still down.
c. It cuts the running engine when the transmission is in gear and the side stand is moved down.
Periodically check the operation of the ignition circuit cut-off system according to the following tests.
With the engine turned off:
1. Move the side stand down.
2. Make sure that the engine stop switch is set to "RUN"
3. Turn the key to "ON".
4. Shift the transmission into the neutral position.
5. Push the start switch if the engine does not start the neutral switch may be faulty.
With the engine still running:
6. Move the side stand up.
7. Keep the clutch lever pulled.
8. Shift the transmission into gear.
9. Move the side stand down if the engine does not stall you may have a faulty side stand switch.
After the engine has stalled:
10. Move the side stand up.
11. Keep the clutch lever pulled.
12. Push the start switch if the engine does not start you may have a faulty clutch switch.
This check is most reliable if performed with a warmed-up engine.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day. Neutral light isn coming on won start with stand down Kawasaki Vulcan... Replacing the Neutral Safety Switch on Motorcycle Kawasaki ZZR600 Kawasaki VULCAN 2000 Service Manual OEM Parts for Kawasaki 2005 Kawasaki Vulcan 2000 Owner Manual
Was it running when it went under? If it was may need major work if engine swallowed water while running. Was it salt water or fresh. If it was not running when it went in you can drain all fluids and flush. Carbs or throttle bodies need to be removed and cleaned spark plugs pulled and checked for water. Once all cylinders are are free of water fog them and reasemble. Add new fluids and gas and try starting. If it is still drippin g water you will need for bike to completely dry. Hair dryer on low will help dry electronic controls. Do not over heat.
1. How do you know that there is water in a cylinder?
2. Check for spark. Harbor freight has a cheap spark checking tool.
3. Check for gas. Should be able to pull the fuel line off the injector pump and turn the key on. fuel should come out.
caution******dont do both at the same time
Most likely if it cranks (engine turns over) but doesn't start, one of the two above is not happening, although, it could also be an injector pump.
That vintage of motorcycle I would be checking the plug wires and plug caps for breakdown. Find the darkest place at night, rev your engine and look for arcing from your wires to the engine. It's also time to check for any deterioration of rubber hoses and components. Beautiful bike you have there!!