Chrysler 70, 75 and 85 HP Outboard Motors Service Manual OB 3438, Page 183Get this manual
Thickness of thrust washer installed in step Additional spacing required (from above) Thickness of thrust washer required to achieve .010 end float
.054 +.017 .071
12After determining thickness of thrust washer requiredremove dial indicator, holder and post from prop shaft spool13Remove four (4) prop shaft spool bolts and remove spool from gear housing 14Remove two (2) retaining rings from gear housing and lift out prop shaft assembly
Installation
1Install shift arm couplingsecure with O-ring and pin Figure 36Seating Forward Bearing