CHANGING PLUGS IN 2001 1500

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Question moved to model category.

Could be a bad relay and they are easy enough to rest. The problem with bikes is corrosion. Involved in starting, is the battery, the battery connections, the starter button, the relay, and the starter solenoid and its connections. Break all the connections, clean with a wire brush until shiny, smother them with Vaseline and do them back up. Vaseline stops oxidization and also transmits electricity. Ideas in this link from owners regarding corrosion.

https://www.google.com/search?q=Suzuki+VS+800+Intruder+won%27t+start+unless+jumped

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The solenoid click sounds very strong, implying that you have a charged battery and the ignition circuit is functioning out to the solenoid. Suspect an issue with the starter motor. Is the starter motor installed and connected properly?

starter valve lowers compression just for starting purposes, many big single cyclinder bikes have them otherwise the compressions too great to kick start them. with yours same idea for the starter, making it easier for the starter to start the bike

It is possible that the starter pinion is locked on the solenoid is stuck and clicking without contacting to the motor and also if the starter is jammed.
Engage the car in 2nd or 3 rd gear while rolling it to release the jam of the pinion.

When I had my VL 125 i got this problem after a very cold winter, I jumped the bike and ended up splitting the second ignition coil which fed back into and blew the DCI unit, wasn't cheap to have repaired but cheaper than new.
Firstly upgrade your plugs to iridium ones, they never let me down.
Secondly trickle charge your battery for 24-48 hours
Thirdly if still the same try bump starting bike with a good run up in 2nd gear as it may be a stuck starter motor.
The starter motors on these are known for their issues and again ain't cheap for new but if you know a good engineer, there are some ways of modding other starter motors to use as a replacement.

is it rolling if nt den ur key starter is bad but if its rolling bt not startin den u need to check ur plugs or timing bet

if it was left with any fuel in in the carbs then they could have solidified into a varnish type gunge. the carbs need stripped andcleaned.
make sure when u are leaving it standing again over the winter that you either drain all the fuel out or fill the tank up with fuel and stabilizer.
hope this helps.

If it won't even turn over, you may have some water around the start button. Any exposed wires that have a connection could have water inside the connector. If it will turn over but not start, check the spark plug wires at the plugs and at the coil end. Spray some contact cleaner on the connections and allow it to dry.( PROTECT YOUR PAINTED AND CHROME SURFACES)

Check your air filter, and housing for water. Bikes are expected to encounter rainy conditions from time to time, so I doubt it's a fuel problem, but if there is water in the air filter or housing there may be water in your carb.

its in its own protective box with a lid on,if you can find the starter ,follow the cable attached to it back to the battery

the battery will build up calcium and wont hold enough kick charge to start bike thou the battery will test ok in this instance,, this happens when a bike sits for a while without a start

hpoe this helps