Hello Kawasakifriends, after more than 10 years my ZR-7s now makes problems, this expresses itself as follows. 1. When starting you feel a slight starting weakness so that you almost die off. 2. When driving off (gas completely closed) and later giving gas it jerks slightly. 3. Stand gas is quite restless or can not be adjusted. Problems 1 and 2 can be solved by slightly increasing the stand gas. Then however, it only travels slowly. In my opinion, the problem should be found in the idling system of the carburettor. The Kawa now has 36tkm down and thus the valves were adjusted last year. In the meantime the following was done… – Carburettor was cleaned by specialist company Ultrasonic. – All 4 idling control screws incl. O-rings were replaced and set to 2.5 (outside) or 2.25 (inside) revolutions. – All 4 carburettor rubbers (connection air filter to carburettor) were n replaced. – Carburettor synchronized – 2014 or had new idling nozzles installed just under 5tkm ago Otherwise I did not have any problems in the upper load range…today only nearly 300km again. I have read in other threads that it is recommended to increase the original 35er idling nozzle. What do you say and if yes on which size (38, 40 or 42)