Hydraulic Fluid Circuit (If Present); Throttle - FNM HPE Series Installation Manual

Hot Point
WRONG
Figure 29 - Installation sleeve on the exhaust elbow
The diameter of the exhaust pipe (gas + water) is shown in the
following table
Engine
1.3HPE
1.9/2.4HPE
3.0HPE

5.5 Hydraulic fluid circuit (if present)

In the case of engines equipped with power steering pump (or
hydraulic pump or power steering), it is necessary to connect
the pump to driving device, usually the hydraulic actuator of
the stern drive. To connect the circuit properly, follow the steps
below:
1. Connect the delivery from the power steering pump to the
device using a hose of suitable diameter.
2. Connect the return from the device to the power steering
tank, placed on one of the sides of the engine, using a
hose of smaller diameter.
3. Tighten the hoses to the tank and to the power steering
pump making sure there is no leakage of fluid.
4. Fasten the tubes with suitable clamps or cable gland to
the bulkheads or to the engine in such a way that they are
not free to move. Avoid too tight bends.
The hoses must never come into contact with the
moving components of the wheelhouse, with the
coupling or with the transmission shaft.
5. In the case of engines with Mercruiser Bravo® stern drive,
the delivery (a) and return (b) pipes are shown in the
image of the figure below. Tighten both fittings on the
transom to 30 Nm (23 lb-ft):
26 – FNM® Series HPE – Installation Manual
CORRECT
Exhaust riser diameter [mm]
60 (2 3/8 in)
90 (3 9/16 in)
100 (3 15/16 in)
Figure 30 - Delivery (a) and return (b) of the power steering tube for
Mercruiser Bravo® stern drives
The engines of the HPE range are provided with two different
types of high-pressure tubes for the hydraulic circuit. The
connectors at the end of the two tubes are the following:
Type Pipe
A (suitable for
Mercruiser® stern drive
hydraulic steering)
B (suitable for Volvo®
stern drive hydraulic
steering)
After the connection process, top up the hydraulic fluid on the
power steering tank using only oil type ATF.
The original oil for Mercruiser® "Power Trim & Tilt Fluid" stern
drive order code Mercruiser® 92 - 858074K01, exceeds the
ATF specifications and is recommended for installations with
this type of stern drive.

5.6 Throttle

The engines of HPE range are provided with electronic control
unit. The engine control is made by an electrical signal that
represents the percentage of throttle (or pedal) load. The
signal is provided directly from a control system or by a
potentiometer mechanically connected to a mechanical
throttle. There are 3 control modes:
1. Mechanical throttle: this prearrangement is provided as
standard with the engine, which is equipped with
mechanical "potentiometer".
2. Flexball® electronic throttle: supplied on request with
the engine. In this case a the potentiometer is provided for
compatibility with the mechanical systems.
3. Electronic throttle connection kit: supplied on request
with the engine (in this case it has a potentiometer) or as
Delivery fitting Return fitting
Threaded
Threaded M16x1.5
M14x1.25
(Male)
(Male)
Threaded ISO228 G
Sleeve Ø10mm
3/8 "(Female)