F650 Break-in FAQ

by Sean #807, Trevor George.
compiled &edited by Kristian #562
Please read the Disclaimer before attempting any work in this FAQ.
Last Updated: 16 July 2006, by Winter #1935

You may also like to read the Riding Tips FAQ


What the manual attempts to get you to do, but doesn't tell you why, is to limit the amount of heat applied to the various reciprocating/rotating components for any long period of time.

You have two opposite functions to perform at break-in:

  1. Apply enough pressure to the piston rings (via high-load) to have them expand and match the cylinder bore (in fact, they both wear a bit and fit each other). This also applies to valve to valve-seat interfaces and all plain bearings.
  2. Avoid excessive heat that would cause distortion that will prevent these parts from mating.

So how do we do this?

Understand, this is a two part process:


Refer also:

Alternative Break-In Method

I spent hours going over a wealth of information on this site last night - maybe it's been posted before but I missed it. The site contains a procedure for breaking in an engine:


It's contrary to what the manufacturers recommend, but apparently the author has been doing it his way for a long time with great success. I am interested what others think of it. BMWconfused

Another Method

A friend of mine sent me this link on how to break-in the new bike. Would this void the warranty? http://www.peterverdonedesigns.com/breakin.htm. Flash Gordon