Suzuki 2003-2007 DF60 DF70 Outboard Motors Service Manual, Page 256Get this manual
LOWER UNIT
5Install the shift rod guide housing to the gearcase and tighten the three bolts securely6Make sure that the shift rod guide housing assembly shifts smoothly
FORWARD GEAR Place the forward gear bearing and the back-up shim in position, then install the forward gear 109900-22540: SUZUKI OUTBOARD MOTOR GEAR OIL