1978 Johnson 175, 200, 235 HP Outboard Service Manual, Page 118Get this manual

1978 Johnson 175, 200, 235 HP Outboard Service Manual, Page 118

DISASSEMBLY OF OEARCASE (See Figure 6-47) aPlace gearcase in suitable holding fixtureSee Figure 6-48Remove oil level and drain plugs to drain gearcaseReinstall plugs temporarily after draining gearcasebRemove propeller nut, washers and propellerRemove "0" ring from top of driveshaft
Impeller housing screws Impeller housing Impeller housing cover Grommet Shift rod cover screws

Figure 6-49Shift Rod Cover and Impeller Housing Screws