1974 Johnson 135 HP Outboard Motors Service manual, Page 55Get this manual
b, Re move outer ear exhaust housing cover hex head screwsSee Figure 5- 118Remove hex head screw nd inner exhaust housing coverSee Figu 11CO NOTE
00 NOT remove fill blocksThese are machined with the cylinder block as an assemblySee Figure 5- 11AI
INN ER EXHAUST . _
HOUSING '
RETAINING