I have a 2017 650MT 3-C . I started to have starting issues and then the bike refused to start at all. It will start on a push. So far I have replaced the solenoid, starter and sprag bearing and finally the battery and still the issue persists. I am at a loss to figure out what is preventing the bike from starting. Has anyone come across this issue. The bike has 20,000 miles on it and is well serviced , Cheers, Eddie.

[2015 Z Force 800 53/Trail EPS]

Have you taken a compression test? 20,000 miles on a Chinese engine is getting up there.

Check your valve clearances. Sounds like a tight valve or two. At 20,000 it is time for a clearance check anyway.