Average hours on chain & sprockets?

[liv2day]

I used the search function and looked through a bunch of threads on chain & sprocket replacement (leaning toward Ironman stuff after that), but only saw a variety of mileage (600 miles on up).

I've logged 84 hours on my 200 and guess there was probably ~10 hours or so on it when I purchased her.

I need to check the front sprocket for hooking, but the rear sprocket is in good shape. I have noticed tight spots, but there isn't a ton of lateral movement. Unfortunately, I neglected to tighten the chain before my last ride and she jumped off. Luckily, it didn't spin and I was able to get the chain back on and finish the ride. Didn't happen again, but it has me wondering if it's time to replace the whole kit.

The adjusters show slightly more than 2 "bars" left before the axle reaches the end.

Wondering if 84 hours means it's about time to replace or what others have experienced?