Yes, it was included in the rubuild text in case of factory balancing, which is often the case when you see assembly marks inside a motor.

It's not always a certainty, but it does no harm to align them as the factory would upon assembly.

Unlike some of the less well designed 90° V-twins, the NSR250 doesn't need a balancing shaft, so I would always recommend using the marks just in case!
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Andy.
NSR-WORLD.COM

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