I have a Kawasaki Z750, which is awesome but there's not enough adjustment in the front fork... What can I do to it to be able to adjust them? Can I put in the forks from another motorcycle and will they fit?

Fitting forks from a different model or make of bike is not a good idea, you would need to find a set of forks with the correct diameter, length and axle,brake,bracket mounting positions. Or you may need to change the tripple clamps ( that join the forks to the frame and allow them to swivel ) if you want to fit a different diameter fork to your bike.

The best solution is to take your bike to a suspension tuning specialist who can fit an upgrade kit to your forks ( change the springs to a spring that suits your weight/needs, fit gold valves etc.)
Im not sure where / who can do this in Thailand but i know of YSS who make rear shocks and fork valve kits. Check their website.
Matt

Quote by: James

I have a Kawasaki Z750, which is awesome but there's not enough adjustment in the front fork... What can I do to it to be able to adjust them? Can I put in the forks from another motorcycle and will they fit?

It's annoying that the Kawasaki Z750 have no damping in the left leg. Apart from the usual re-valving and re-springing choices, both of which you have correctly surmised, they will not actually increase the areas of adjustability at the front of your motorcycle.

There remains the entire replacement of the front end with a transplant from another suitable donor motorcycle – forks, wheel, brakes and mudguard might also need grafting on too...