StephenRC45 wrote:Have a look at the bottom of this page.

http://tech.nsr-world.com/nsr250/mc21/mc21-crank-specifications.php

Genuine Honda flywheel pullers for the NSR can be purchased though the marketplace if you required one.

Cheers Stephen,

I actually have the flywheel puller, which is very effective. I was more referring to the initial loosening of the main bolt. It seems that this puts a lot of pressure on the crank, and I was wondering if the potential of damage could be removed/lessened.

Is a flywheel holder the solution?