2009-2010 Suzuki DF70A DF80A DF90A Outboard Service Manual, Page 322Get this manual
3A-28 Right Hand Rotation Unit: Reverse Gear Back-Up Shim Adjustment After adjusting the forward gear tooth contact pattern, follow the procedure below to adjust the reverse gear1) Correctly assemble and install reverse gear, propeller shaft, propeller shaft bearing housing and related components2) Screw slide hammer assembly onto the propeller shaft and strike it few gentle outward tapsSpecial tool (A): 0993030161 (Propeller shaft remover) (B): 0993030104 (Sliding hammer) 5) Compare play "B" to play "A"Refer to "Rechecking driveshaft thrust play" (Page 3A-27)6) Reverse gear back-up shim adjustment is correct if "B" is equal to "A"If "B" is less than "A", reduce reverse gear back-up shim thicknessChecking propeller shaft thrust play After adjusting all gear positions, measure the propeller shaft thrust playIf not within the following specification, shim adjustment is requiredNOTE Maintain the forward gear thrust washer at standard thickness (3.0 mm) and use only the reverse gear thrust washer to adjust thrust playPropeller shaft thrust play Approx0.2 0.4 mm (0.01 0.02 in 1) Assemble the gear adjusting gauge to the propeller shaftI9J011310107-01