Yamaha F100B F100C Outboards Factory Service Manual, Page 268Get this manual
Bracket unit
3Install the oil pan and then tighten the bolts finger tight4Install the exhaust manifold and bolts, and then tighten the bolts finger tight5Tighten the exhaust manifold bolts 5, then the oil pan bolts 66Install the plate and the muffler into the oil pan7Install the water pipe 98Install the muffler assembly by inserting the tip of the water pipe into the joint hole of the upper caseLT