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Re-breakin proceadure for a bike that hasn't run for a long time

JTGS850GL

JTGS850GL

Forum Sage
Past Site Supporter
I've got all the general maintenance done (valves adjusted, carbs rebuilt and fluids/filters changed).

I'm wondering what the consensus is on the proper way to run a bike that hasn't been run in a long time 5+ years after all the maintenance has been completed. I'm leaning toward a relatively aggressive break-in with a fresh oil/filter change after a couple hundred miles.
 
Ride it like you stole it, lots of RPM fluctuations to seat those rings on the first ride or as soon as you can if you've already ridden it. Change the oil within a few hundred then the secondary and final drive by a 1000 or so. Sounds like you've got it sorted.
 
Asked this question to a lifelong mechanic and he said no breakin is required.
 
Break in procedures only apply to new rings on a fresh rebuild. As long as the cylinders aren't rusty and the pistons weren't frozen you will be fine as the rings have already been seated. As long as the pistons weren't frozen or something you will be fine.
 
The reason I was asking is because the cylinders got a good wash down with gas since several of the carbs floats were leaking badly when I first received the bike. Enough gas was in the cylinders to flood the engine case. I've replaced the oil and filter since. I've also rebuilt the carbs and replaced the petcock along with a vacuum sync as well. This is along with all the standard maintenance. All seems to be in good working order now. The engine does seem to have a little more vibration then my 850 does but I'll go back and redo the carb sync again after I put a few more miles on her and see if that helps. She pulls strong enough and today I've had her up to redline in 1st, 2nd and just north of 8000 in 3rd with no fuel or ignition issues noted. Just that little extra vibration.
 
Even if the rings were stuck, once they unstick it will be fine, no break in required.
 
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