1981 Johnson/Evinrude 4HP Outboards Service Manual, Page 61Get this manual
REMOVAL OF STANDARD EXHAUST HOUSING Entire powerhead, exhaust housing and gearcase may be removed from swivel bracket as an assembly by removing four screwsSee Figure 6-1aRemove screws attaching powerhead to exhaust housingSee Figure 6-15 Remove powerhead bRemove gearcaseSee Removal of Standard Gearcase
DISASSEMBLY OF STANDARD EXHAUST HOUSING
aRemove water tube and grommet from exhaust housing by pulling out See Figure 6-16bRemove cotter pin and lift out shift rodSee Figure 6-16cRemove set screw to separate shift lever and bellcrank See Figure 6- 16dRemove rubber vibration dampeners by stretching over bottom of exhaust housing Plastic pivot bearings can be removed by spreading enough to clear housingSee Figure 6-17