With three applications this Circlip-type-c,16mm is the most specified part.
A sample from the products for the Kickstarter Mechanism ('80-'81 K include: O Ring,12mm, Circlip-type-c,16mm, Spring,ratchet, Ball-steel,1/4.
The Kawasaki KICKSTARTER MECHANISM ('80-'81 K has twenty-five products enlisted in the schematic.