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Old 08-14-2008, 11:37 PM   #1
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New ninja 250 break-in rpms

I have a fairly new 07 ninja 250 and have read in the manual that you should not exceed 4000rpms for the first 500mi to ensure the engine is broken in properly. When i ride on the street however, it is near impossible to stay under 4000rpms when riding about 40mphs (i reach about 5). I've even adjusted the idle screw so that the bike is idling right under 1000 when i'm in neutral. If i got to go freeway, i'm rpming about 6-8000 rpms. Anybody got some tips? Will exceeding the rpms slightly for the first 500 miles will damage my engine in the long run? I always heard that the bike should be fine as long as it's not redlined. Thanks guys.
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Old 08-14-2008, 11:40 PM   #2
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it will be fine just dont rev it very fast thats all it really wants so you dont blow a seal or o ring. you'll be just fine
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Old 08-14-2008, 11:49 PM   #3
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an age old question my friend, and everyone has their own opinion. youll have to make up your own mind, but here is a good read:
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Old 08-14-2008, 11:58 PM   #4
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I was nice to mine for maybe 200 miles, changed the oil, and rode it like I wanted to. 22k later and no problems at all.
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Old 08-14-2008, 11:59 PM   #5
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When I got mine the mechanic at the dealer said to just ride it normally. That's a high-revving engine and you wouldn't be ready to shift out of first gear at 4k, let alone tool along in the higher gears. Just ride it.
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Old 08-17-2008, 01:24 AM   #6
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the rings have already been seated by the time you get a bike. the break in period is to heat cycle the internals, bearings in particular. Obviously on Houston area roads its not going to be safe to be riding around under 4k rpm all day, but I personally would not sustain high engine speeds with a fresh engine until at least 500 miles, if not the full 1k.
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