I want to adjust the height of my Kawazaki ER6n from 2006. Specifically, I want to reset the height to factory settings. Is this something that's possible to do without hiring a certified mechanic or do I need special tools etc to fix this?
There are very simple linkage components that afermarket companies manufacturer to lower motorcycles. Here is an example of a component sold to lower the Kawasaki ER6.
This is what the shock to swingarm mount looks like with the linkage in place.
This is the appearance of the shock to swingarm mount point without the linkage in place.
Remove the linkage. It typically leverages the stock lower shock bolt. Use the bolt to mount the shock directly to the swingarm. Use some blue locktight to ensure the two cylinder vibration with the ER6 doesn't slowly back out the bolt.