1978 Johnson 175, 200, 235 HP Outboard Service Manual, Page 112Get this manual
DISASSEMBLY OF EXHAUST HOUSING AND ADAPTER (235 HP) aRemove six screws to separate adapter and inner exhaust housing assembly from outer exhaust housingSee Figure 6-34Remove inner exhaust housing and adapter assembly from outer exhaust housingSee Figure 6-35
bInner exhaust housing and water tube can be removed from adapter by removing remaining upper rubber mount screw, mount assembly and remaining screwsSee Figure 6-34 and 6-36
1Adapter to exhaust housing long screws
2Adapter to exhaust housing short screws 3Rubber mount screws