2009-2010 Suzuki DF70A DF80A DF90A Outboard Service Manual, Page 320Get this manual
3A-26 Right Hand Rotation Unit: Checking and adjusting tooth contact pattern (Pinion and Forward gear) Check tooth contact pattern using the following procedure1) To assess tooth contact, apply light coat of prussian blue on the convex surface of the forward gear2) Install the propeller shaft and housing assembly (minus reverse gear and internal components)3) Push the propeller shaft inward and hold it in position5) Carefully remove the propeller shaft and housing to check the tooth contact pattern"A" "B" "C" "F" "D" "E" I9J011310013-02
"A": Concave side "B": Convex side "C": Heel "D": Tooth top
"E": Tooth bottom "F": Toe "G": Tooth contact pattern "a": Tooth width