1974 Johnson 40 HP Outboard Motors Service manual, Page 62Get this manual
DESCRIPTION RUB BER MOUNTS
The exhaust housing assembly, which carries the
IMPE LER AT
power head, floats on the steering bracket and pilot haft assembly on six rubber mounts and two rubber bumpersIn this wayall power head and drive-
shaft vibrations are isolated and prevented from
being transm itted to the stern br acket and boat
tr ansomSee Figure 6- 1E XHAUST RE LIEF
SLOW SPEED
HIGH SPEED
Figure 6-2 Impeller Positions