Chrysler 70, 75 and 85 HP Outboard Motors Service Manual OB 3438, Page 201Get this manual
6Install dial indicator and holderFigure 317Measure propeller shaft end float as follows : APush down on shaft and turn it back and forth to
remove all forward bearing clearance BSet dial to zeroCPull shaft up firmly and note readingDTake several readings to insure reading is accurate8Pick thrust washer needed as follows:
Final reading must be .005 .001EXAMPLE
AIf dial reading is
Subtract clearance needed To get space to be "filled If thrust washer presently installed is Space to be filled is Thrust washer thickness needed is 9Change thrust washer as follows:
.028.005 .023 .054.023
Figure 33Installing Upper to Lower Gear Housing, O-rings
ARemove dial indicator, holder, post and bearing
3Secure and seal gear housing as followsFigures 33 and 34AInstall new center stud a-ring with light grease on