1985 Mercury Outboard V-300 V-3.4L Shop Service Manual, Page 176Get this manual
Pinion Gear and Drive Shaft REMOVAL
IRemo ve collar using Collar Tool (9 193227)(Figure I) 4Use soc ket nd flex handle 011 Dr ive Shaft Uolding Tool 10 loosen pinion nulHemove pinion nul was er (located above ut) and Dri ve Shaft Tool
ACAUTION
DO NOT strike gear housing hard with the mallet or allow gear housing 10 fall5Hcmove dri vc sha ft OIl1 gcar housi ng IIsi ng cil her me hod "a" orb" followingaInslall Drive Shafl Re moval Tool (91.92785Al) 011 drive shaftIl il 1001 with hammer to re move shaft from housi ng(Figure 2) bRemove gear hou sing from vise and reposit ion it as sho wn in Figure 3Be sure to use soft jaw ise covers (Figure 3) and clamp as close as possibl to gear hO lls ingPlace block of wood on gear housi ng mating surface( Figu re 3) Use mallci nd carefull lap gcar housing from drive shaftaCollar Tool