Suzuki 2003-2007 DF60 DF70 Outboard Motors Service Manual, Page 299Get this manual
DF60DF70 "K4" ('04) model
Checking driveshaft thrust play 1Affix the gear adjusting gauge to the drive shaft09951-09530: Gear adjusting gauge 2To check the driveshaft thrust play, push the forward gear inward and fix it by handSlowly push the driveshaft downward, then read the maximum play
Driveshaft thrust play: Approx0.4 0.6 mm (0.016 0.023 in) If the thrust play is larger than the specified, the thickness of the forward gear back-up shim must be increasedIf the thrust play is smaller, the forward gear back-up shim thickness must be decreased
Checking and adjusting tooth contact pattern (Pinion and Forward gear) Check the tooth contact pattern by using the following procedure: 1To assess the tooth contact, apply light coat of Prussian Blue on the convex surface of the forward gear