Chrysler 75 and 85 HP Outboards Service Manual OB 3646, Page 130Get this manual
2Remove spacer plate and upper cylinder exhaust gasket by removing four (4) stop nuts and washers securing them to power head Figure 19 Figure 17Lifting Power Head off Motor Leg
Disassembly
Figure 19Removing Spacer Plate
1Remove exhaust tube and seal by removing four (4) screws that secure tube to spacer plate Figure 18