Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 236Get this manual
ACAUTION Propeller shaft, cam follower and shift cam, in most cases, will come out of gear housing by simply pulling
outward on propellershaftDO NOT FORCE shaft sideways or ATTEMPT TO PULL with slide hammer or any
Shift Shaft
CLEANING AND INSPECTION 1Clean shift shaft and bushing with solvent and dry with compressed airCheck shift shaft splines on both ends for wear andlor corrosion damageInspect shift shaft for groove(s) at shift shaft bushing seal surface
mechanical pullerBRemove propeller shaft, cam follower and shift cam by pulling shaft straight out of gear housing(DO NOT JERK propeller shaft
NOTE: Sliding clutchforward gear assembly, bearing
4Inspect shift shaft bushing for corrosion damage5Inspect shift shaft bushing oil seal for wear andorcutsCheck "E" clip and retaining ring for damageReplace if damaged
adaptor, thrust washer and thrust bearings will be removed from gearcase with propeller shaft,