1971 Evinrude StarFlite 100 HP Outboards Service Manual, PN 4753, Page 74Get this manual
cRemove reverse valve lever (lever with hole in it) by driving out pinSee Figure 6-30Remove pin, valve, arm and ball check valvesSee Figure 6-31dInspect balls and seats for nicks or groovesReplace if out of round, nicked or grooved
CLEANING, INSPECTION AND REPAIR