Determining The Mounting Height Of The Outboard - Mercury 40 jet fourstroke User Manual

LIFTING OUTBOARD
Use the lifting eye on the engine.

Determining the Mounting Height of the Outboard

The following outboard mounting height settings will work good
for most applications, however, because of different boat/hull
designs, the setting should be checked by test running the boat.
Refer to Water Testing.
• Installing the outboard too high on the transom will allow the
water intake to suck in air and cause cavitation. (Cavitation
will cause the engine to overspeed in spurts and reduce
thrust.) This condition should be avoided by proper height
setting.
• Installing the outboard too low on the transom will allow
excessive drag.
OUTBOARD INSTALLATION
28510
118
eng