1998 Mercury 9.9/15HP 4-stroke outboards factory service manual, Page 320Get this manual
BIG FOOT
3Insert flat end of cam follower into propeller shafta-Spring b-Flat End of Cam Follower
4Place cam follower against solid object and push against cam follower to compress spring5Insert punch thru the cross-pin holes in sliding clutch (between cam follower and spring)6Apply light coat of oil on cross-pin and install cross-pin into sliding clutch by pushing punch out of clutch with cross-pin, as shown(Release pressure on cam follower and remove follower from propeller shaft