PRE-DELIVERY
ZT350 Installation Manual
6-11
Pre-Delivery Preparation
12/05
© 2007 Yanmar Marine International
In-Water Testing
The following information is for engine operation
tests with the boat in the water.
WARNING!
NEVER leave the helm unattended
when testing the vessel in the water.
NOTICE: The water level must be above the
seawater inlet holes on the drive unit or the
through-the-hull pickup.
1. On engines with a drive unit seawater inlet: The
water level must be above the seawater inlet
holes on the drive unit.
Figure 6-10
Figure 6-10
1 – Minimum Water Level
2 – Water Inlet Holes
2. On engines with a through-the-hull seawater
inlet: Ensure that the water level is above the
seawater inlet holes on the through-the-hull
seawater inlet.
Wide Open Throttle Test
NOTICE: Follow the Engine Operation Manual to
operate the engine at full throttle before the
break-in period is complete.
1. To test if the correct propeller has been
installed, operate the boat with a full load
onboard at wide open throttle (WOT) and check
the rpm with an accurate tachometer. Engine
rpm should be near top of the specified range
so that engine speed will not fall below
specifications under a heavy load. If the engine
speed is too high, replace the propeller with a
higher pitch propeller.
2.
See Test Preparations on page 6-10
for other
checks.
Drive Unit Operational Tests
WARNING!
NEVER leave the helm unattended
when performing tests with the boat in the
water.
CAUTION!
Instruments can warn of engine
problems. Watch the temperature gauge on the
dash to ensure that the engine does not
overheat to avoid engine damage.
1. Refer to the
Engine Operation Manual
and start
the engine.
2. Operate the engine at IDLE rpm until it reaches
normal operating temperature.
3. Turn the steering wheel to starboard, then to
port, and ensure that the drive unit turns the
correct way.
4. Check the power steering system for a lugging
condition (engine rpm drops and / or the power
steering pump tone changes).
5. Turn the steering wheel to the LEFT (Port) until
it stops and then continue to apply pressure. If
the pump lugs, check the following:
(a) Check for an obstruction between the gimbal
ring and the gimbal housing, and all moving
steering components.
(b) Ensure that the steering lever is not
contacting the cutout in the transom. Modify
the cutout if there is contact between the
transom and the cutout.
6. Turn the steering wheel to the RIGHT
(starboard) until it stops and then continue to
apply pressure. If the pump lugs, check the
following:
(a) Check for an obstruction between gimbal
ring and gimbal housing, and all moving
steering components.
(b) Ensure that the steering lever is not
contacting the cutout in the transom. Modify
the cutout if there is contact between the
transom and the cutout.
7. Check steering cable end dimension with the
for proper steering
cable dimensions.
8. Turn the engine off.
0006
38
5
(1)
(2)
