Moin municipality! I have come over three corners to a well-preserved GPZ600R from 85. Looks good, is maintained and runs well. Would just like to do some things but without rep instructions it is very difficult because everything is a little more compact. Also technical data is not easy to obtain. Which would be: tank content? air pressure in the chassis? cooling water, where drain and vent? What is the slider with the numbers 1-4 under the left side panel? Can someone help there? Didn’t have The manual and the repbooks are no longer available! :-((( Thank you! Greeting Gerri