Front Sprocket Nut Just Came Off
Curious if this has happened to anybody or if anyone has some insights (some specific questions at bottom)...
So yesterday I was cleaning/lubing my chain. I had the rear end up on a stand and was rotating the tire in a backwards direction as I was spraying/brushing/lubing the chain. Later, I was heading to Home Depot on my bike when it started seizing and making loud clunking noises. I pulled over and found that the chain was offset on the front end, and was scraping against other components.
I opened it up and found that the front sprocket nut had come completely off (presumably associated with my spinning the rear wheel in reverse for cleaning chain), and the front sprocket was off the splines allowing the chain to scrape on adjacent components. The washer that locks it down does not appear to have been properly bent to lock it down, in my opinion. Also, there is very little room for the washer to fit on the splines, but I checked and it can still fit on. The sprocket nut's threads are also damaged, so it won't go back on.
Also, I noted there seemed to be a whole lot of gunk accumulated in the housing around the front sprocket. Possibly my fault for having too much excess lubricant on the chain over the series of lubrications that I've done on it over the past year.
I recently had the 16,000 mile interval service done with valve checks and everything at an authorized Kawi dealership (SF Moto). Is it possible they took this washer/nut off and didn't put it back on right?
Or is it just absolutely my fault for spinning the wheel in reverse when cleaning it?
Any way to get expedited shipping to replace the sprocket nut (and the washer I guess)? Everything I can find is two weeks out.
Any insight/experience on this is appreciated!
Last edited by PapaBear AU; 11-12-2018 at 12:26 PM.