Z001007/0_4_September 2007
Page ENGINE INSTALLATION-9
ENGINE INSTALLATION
INSTALLATION INSTRUCTION
5. 9. 1. Adjustment of Engine on flexible engine mounts
The settings of the height adjusters should be equal right and left. Between the front and rear of the engine a
difference in adjustment is admissible and often unavoidable. Before beginning the alignment the engine should
rest on the mounts for about 48 hours.
Proper setting of the engine mounts can be done as follows:
Roughly align the engine with the propeller shaft on the mounts by means of adjusting nuts, without connecting
the propeller shaft to the flange on the reversing gear.
Lift the engine at the front to such an extent that both front supports are released from the lower nuts of the
mounts.
Lower the engine and adjust the nuts so that both engine supports sit simultaneously. Same procedure at the
rear side of the engine.
The engine foundation must be rigid enough to absorb the concentrated load. After correct adjustment of the
engine mounts, the engine can be balanced by front and rear adjustment of the two nuts right and left with exactly
the same number of turns.
In longitudinal direction, the vibration dampers are to be mounted free of tension.
Engine mounts being mounted with initial stress may transmit vibrations and sound into the hull.
The oblong holes in the vibration damper feet permit a lateral correction of the adjustment. When the boat is in
the water, the alignment is to be checked once again.
