2007 Evinrude E-Tec 75, 90 HP outboards Service Manual, Page 279Get this manual
GEARCASE DRIVESHAFT SHIMMING
DRIVESHAFT SHIMMING
IMPORTANT: If new pinion gear is needed,
replace gear set before shimmingPinion gear backlash is achieved by using shims between the driveshaft bearing housing and the thrust washerWhen installing new thrust bearing or washer, bearing housing, pinion, or driveshaft, it is necessary to properly shim the assembly to restore factory clearanceUse Driveshaft Shimming Tool, PN 393185Shim gauge bars are precision made and should be handled carefullyThe length of each bar is stamped near the part numberThis dimension is 0.020 in(0.508 mm) shorter than the actual shimmed length of the driveshaft
Select Collar, PN 341440, and Shim Gauge Bar, PN 328367Slide the collar onto the driveshaft with large end in contact with the bearing housingInsert the assembled driveshaft into the tool base and tighten preload screw against the driveshaft until groove on the spring-loaded plunger is flush with end of threadsTighten locking ring on preload screw
IMPORTANT: Degrease pinion and driveshaft