Tohatsu 4 Stroke MFS 2/2.5/3.5A Outboards Service Manual, Page 131Get this manual
Lower Unit 28) Installation of Clutch Cam and Cam Rod
1Install cam rod ass'y to gear case as shownOBM Be careful of direction of cam rodGEAR
29) Installation of Forward Gear and Pinion Gear (A and Gears)
1Install removed shims and forward (A) gearand then, drive shaft ass'y and pinion (B) gear Replace shim with new one of the same thickness if any deformation or damage is found on removed shim