Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-42794--1, Page 353Get this manual
Main Body Removal NOTE: Empty oil and use good grade of solvent to rinse out tank1Remove fill strainer and cover2Unplug 2-pin connector (a) from tank receptacle
4Remove main body (a) by tilting the top of body out first from tank (b)
NOTE: Gasket must be replaced if it shows signs of deterioration such as cracking, swellingsagging or discoloration 3Remove bolts (a) and seal washers (b) from main body (c) using 8mm wrench5If gasket is to be replaced, remove internal oil filterSee page 166Remove collars (a) and gasket (b)