[twowheeladdict]

Welcome. What does it do when you hit the starter?

Did the old gas smell funny like varnish?

Only 4 months shouldn't be a major problem unless the gas was old to begin with. Only partially full is a larger problem because of condensation and moisture in the fuel.

If the bike turns over strong and no fire, then you need to check the spark plugs, air filter, and fuel filter. Engines need fuel, air, and spark.

 

[twowheeladdict]

Thank you twowheeladdict and Axel for the reply! Actually the gas didn't smell funny, and I think you are right that it should not be the gas issue since the new gas didn't do anything good.

So far the bike only run 5k mile as you may noticed on the picture, so I'm not sure if it's because of spark plugs/filters issue, just feel it might be little early to change the filters per the maintenance manual. But could be, should I start to check the plug/filters for the next step? Also, the bike didn't turn over strong but just fast beep sound after I press the start button. And didn't feel any signal of strong starting. Thanks!

Axel~~~I tried to start few times and checked the kill switch. I wish I could upload a short video but don't know if it's possible. : ) Thanks!

Charge the battery. Check air filter, because rodents like to build nests. If you can get a code it could be helpful. Do you hear the fuel pump prime when you turn the key on?

 

[twowheeladdict]

Will do. Also I'll try to get the code even though it seems like the way I found online didn't work. Didn't hear the fuel pump prime when turn the key on. As to the battery, my question is that if the headlight works, it should has enough electricity to start the engine? Thanks!

Not hearing the fuel pump is not good. If you don't recall ever hearing it, find another motorcycle that you can turn on and hear it. A friend or a dealer even.
Once you get the battery charged, verify if you hear the fuel pump. If not, then it may have died, or the wiring to it is broken, or fuse is blown.

 

[twowheeladdict]

Charge it at 2 amps overnight at least. Or just put in a new battery. They don't last long anymore. If there isn't a certain voltage there the bike will not start. 10-10.5 I think.

I haven't kept a bike longer than 6 years, but have had bikes up to nine years old with oem battery. I've had a couple die in the warranty period though. Bikes on maintainers between rides.