Yamaha F100B F100C Outboards Factory Service Manual, Page 221Get this manual
Upper case (F100B) No1 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Upper case Bolt Washer Plate Upper mount Bolt Grommet Bolt Muffler seal Rubber seal Gasket Screw Baffle plate Damper Grommet Dowel pin Bolt Washer Rubber washer Lower mount Washer Drive shaft bushing Circlip Part name Muffler assembly Q'ty M14 235 mm