GENERAL INFORMATION
2-4
ZT350 Installation Manual
Notice to Vessel OEM & Equipment Installer
© 2007 Yanmar Marine International
Special Tools
Trim-In Limiter
WARNING!
Only qualified personnel should
install and evaluate the effectiveness of the
Trim-In limiter. The vessel is required to be
tested at trim-in range and several different
speed settings. If an undesirable handling
characteristic occurs when the drive unit is
trimmed in at higher speeds, the trim-in range
should be adjusted by using a Trim-in limiter.
Wider trim-in ranges and higher speeds may
cause handling problems on some vessels that
could result in personal injury.
The stern-lift will cause certain vessels
(predominantly heavy, deep-V hulls) to list towards
the port or starboard side during full power speeds
with the stern-drive set to full Trim-In. The vessel
will not roll over completely, but the list can often be
significant enough to unseat the operator and / or
passengers. This creates an unsafe situation.
This condition is primarily a result of vessel design
and can only be reduced with thorough
performance testing by the manufacturer (OEM) of
the vessel. However, shifting hull weight to the stern
may be helpful in controlling this tendency.
To help reduce the effect of stern-lift, a Trim-In
limiter is available for the Yanmar ZT350
stern-drive, as a service part.
The Trim-In limiter reduces stern-lift by preventing
the stern-drive unit from reaching the last few
degrees of full trim under. While this device should
reduce the rolling tendency, it may not eliminate the
tendency entirely. The use of a Trim-In limiter, and
the evaluation of its effectiveness, can only be
determined by trial and error adjustments and is
ultimately the responsibility of the boat
manufacturer.
Transom Cutout and Drill Fixture
(196350-92020)
Use to determine where to cut and drill
the boat’s transom for the stern-drive
installation.
Alignment Shaft
(196350-92010)
Aligns the engine and the drive unit
during installation.
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