Intermittent Starter Button Weirdness - Video included

[scb]

Hello,


I've only had my little 1999 FZS600 for a few weeks so I'm still getting used to her.


It seems to have an odd gremlin to do with starter, but it doesn't show up all the time. It may be worth mentioning it has a Datatool Duo installed, a type of immobiliser.


So here's what happens:

• I disarm the Datatool
  
• I put the key in the ignition and turn it to on - all the dash lights come up correctly, all lights around the bike work fine.
  
• Kill switch isn't on and the side stand is down.
  
• I'll depress the starter button and there is no response from the bike at all, no clicking, no noise, no starter turning, and crucially the oil light on the dashboard doesn't appear.
  
• No matter how long or how many times I press the button, it will be unresponsive.
  
• I'll turn the ignition off and wait a few minutes and then try again and the starter motor will turn straight away without hesitation and the oil light on dashboard appears while this is all happening.
  

I've noticed the following:

• The bike has always started straight away from cold - this intermittent issue has appeared so far when the bike is warm.
  
• The previous owner mentioned something about sometimes needing to wait for the fuel pump to prime before starting when the bike hasn't been used for long periods, but I don't think this will apply when the bike is warm.
  
• Normally when the engine is running and you press the starter button, you can hear it spin, lights dim and the oil light comes on. Today on the way to work I pressed the button and it didn't do that. This was my indication the problem was showing itself. Sure enough, I got the the bike to work and turned the engine off, and the starter button didn't work. After waiting a few minutes it started working again.
  

So it seems the starter motor itself works fine, and the button also appears to work just fine so it's probably not the contacts.

Would a faulty starter relay show a problem like this? Has anyone else had a similar problem?
I do worry because the day might come when it doesn't restart at all :'( so need to address this issue now.

Do you have any ideas? Thank you.