INSTALLING ENGINE AND DRIVE UNIT
4-24
ZT350 Installation Manual
Installing the Engine
© 2007 Yanmar Marine International
4. On models where the front engine mounts
cannot be lowered enough to allow for proper
engine alignment:
(a) Attach a sling and lifting arm to the engine
lifting eyes and adjust so that the engine is
level when suspended.
(b) Remove the rear engine mounting bolts and
hardware.
(c) Use an overhead hoist to lift the engine
enough to install the stainless steel washer
inside the inner diameter of both fiber
washers.
Note: This will position the washer between the
new engine mount and the transom
mounting support, which should raise the
engine slightly, resulting in additional
front mount adjustment.
5. Install both rear engine mounting bolts with
hardware as illustrated.
(a) Set the engine on the stringers.
(b) Relieve the hoist tension.
(c) Disconnect the sling from the engine lifting
eyes.
(d) Insert the solid end of the Alignment Tool
through the gimbal bearing and into the
engine coupler splines.
6. Repeat this process until the Alignment Tool
installs easily (slides freely with two fingers) all
the way into and out of engine coupler splines.
Never twist the alignment tool into position.
7. Torque the rear engine mount bolts.
8. Fasten the front mount assemblies to the boat
stringers using appropriate hardware (as per
manufacturer's design specifications).
(a) Torque both front mount locking nuts.
(b) Recheck alignment with the Alignment Tool.
NOTICE: The Alignment Tool must enter the
coupler splines freely. If not, remove the
Alignment Tool and readjust the alignment.
(c) Remove the Alignment Tool when alignment
is complete.
9. If operating in a saltwater environment, apply
sealant to the threads and nuts of the engine
mounting hardware to help protect against
corrosion. This will allow for easier loosening in
the future.
Note: Yanmar recommends that the shipping
hardware remain on the transom
assembly during shipment if the boat will
be shipped without the drive unit
installed. On boats that will be shipped
with the drive unit installed, fold the bell
housing dust cover flap back into place
and tape shut.
10. Ensure that all hardware is properly installed.
Rear Engine Mount Bolts
N·m
lb-ft
45
33
