1997 Johnson Evinrude "EU" 40 thru 55 2-Cylinder Service Repair Manual, P/N 507265, Page 87Get this manual
Quality of the image is intentionally reduced!
Disassembly
[] Remove the stem from the pistonDiscard the stem and the steel washersSet the flapper valve and nylon washerretainer asideClean all parts with ONIC Cleaning Solvent and insp