2005+ Mercury Verado 4 Stroke 200/225/250/275 6 gear housing Service Manual, Page 131Get this manual
Left Hand Rotation
5Inspect to ensure that the spool has end playThis end play may be achieved by turning the castle nut clockwise down until it is snug and then backing off the nut counterclockwise to the first cotter pin slot
aEnd play
Shift Spool End Play
bShift spool
0.05 mm0.25 mm (0.0020.010 in
Disassembly
NOTE: If the spool spins freely and has the proper clearance, it will not be necessary to disassemble and reassemble the spoolIf the spool does not function properly, proceed with the following disassembly proceduresNOTE: Disassembly of the shift spool is for cleaning and inspection of the internal parts due to an improperly functioning shift spool assembly or debris in the gear housing andor shift spool assemblyIndividual components for the shift spool are not available as replacement partsIf the shift spool does not function properly and the following cleaning and adjustment procedures do not correct the problem, it will be necessary to order new shift spool assembly