1978 Johnson 175, 200, 235 HP Outboard Service Manual, Page 110Get this manual
DISASSEMBLY OF EXHAUST HOUSING AND ADAPTER (175 and 200 HP) (See Figure 625) aRemove six screws to separate adapter and inner exhaust housing assembly from outer exhaust housingSee Figure 6-26Remove inner exhaust housing and adapter assembly from outer exhaust housingSee Figure 6-27
bInner exhaust housing and water tube can be removed from adapter by removing remaining upper rubber mOWlt screw, mOWlt assembly and remaining screwsSee Figures 6-26 and 6-28
Figure 6-28Adapter to Inner Exhaust Housing Screws (Indicated by Broad Arrows 1Adapter to exhaust housing long screws 2Adapter to exhaust housing short screws 3Rubber mOWlt screws Figure 6-26Adapter to Outer Exhaust Housing Screws