Tohatsu 4 Stroke MFS 2/2.5/3.5A Outboards Service Manual, Page 128Get this manual
23) Inspection of Forward Gear and Pinion Gear (A and Gears) 1Check teeth and jaw of forward (A) gear and pinion (B) gear and jaw of clutch for cracks and wearReplace if necessary
24) Assembly of Drive Shaft
1Use press device to install new drive shaft bearing to
drive shaft with the numbered side upBearing Install ToolPN3AB-99900-0