Deshet, you can try Marine Science Technolgies
www.mstguardian.com They made a motor fresh water flushing kit that I installed in 2001 and had great luck with on my old Yamaha o/b. They also had a chemical, salt and corrision flushing kit. They used to advertise and be heavly sold on
www.boatfix.com. There web sight is still up and has a diclamer about a power strugle with owner and others? I heard they where regrouping. Check them out give them a call. Crusher