2009-2010 Suzuki DF70A DF80A DF90A Outboard Service Manual, Page 321Get this manual
Right Hand Rotation Unit: Example [A] Incorrect topside toe contactCorrection measures Decrease thickness of forward gear shim Slightly increase pinion gear shim thicknessCAUTION Do not set tooth contact in this position (top side toe contact)Damage and chipping of the forward and pinion gears may resultExample of incorrect
Rechecking driveshaft thrust play After obtaining optimum tooth contact, driveshaft thrust play should be measured1) Affix the gear adjusting gauge to the driveshaftSpecial tool (A): 0995109530 (Gear adjusting gauge)