Jets Munt Merlin M122NG, Instruction Manual

Page: 8 / 24

lengths up to 10 meters, the power looses on power wires (red and black) will increase with
length, so thicker cooper section must be used on long lengths. Up to 1 meter, 1mm2 section is
OK. If you make your own extension lead, DOUBLE CHECK THE POLARITY. You will damage the
electronics inside the engine if polarity is reversed.
Engine installation:
Fuel system Install the fuel system components as seen in the above picture.
Pump : Note that the fuel pump has an arrow engraved in the front face indicating the
direction of the fuel flow. There are 2 types of pumps. Model 1304 are used on the engines up
to 120N; model 1307 is used on engines from 120 to 250N.
Fuel filter The fuel filter must be installed close to the input port on the pump to prevent any
particle to enter in the pump and to damage it. Use a suitable length of the clear tubing
supplied and keep the tubing on the suction side as short as possible. Direction of flow inside
the filter is not important, but should be always the same after first use. Install the filter in
vertical position with the exit on top to not leave air trapped inside. Do not run the engine
without the fuel filter.
Do not place anything (fuel filter, flowmeter, etc.) on the fuel line between the pump and the
engine. Check that the fuel line has the bends at suitable radius to prevent to the hose to be
pinched.
Finally connect the fuel pump and the battery to the ecu as shown. The fuel pump is a delicate
element, dropping it on the floor can damage it, always handle with care. Never disassemble
the fuel pump; warranty from pump manufacturer will become void.
It is strongly recommended that, after a new installation or modification on the fuel system, to
disconnect the fuel hose from the engine, routing it to a appropriate container, and run the
pump few seconds using the “pump test function” on the ecu so that some fuel clean all the
possible dirt particles that could have entered in the system during installation.
ECU (Engine Control Unit) Set Up
The new ECU system of the XBL/TS series is of modular design. All parameters concerning the
engine operation and run timers are stored in the engine and transferred to the ecu during
power up, enabling the replacement of the ecu without any adjustment, or, replacement of the
engine without readjusting the ecu, even with a different engine model. Check the table on
page 5 to check the minimum software version compatible with your engine model.
Parameters related to the installation, like radio setup, are stored in the ecu.
The ecu system supplied (ecu and engine) has been already tested and programmed at factory
for your engine. The engine has already been set up and tested using the same ECU and pump
supplied so there is very little to adjust in order to get the engine running, only the alignment
to your transmitter is necessary.
Confirm you have connected the ECU input to the throttle channel of your receiver,
DISCONNECT the ecu battery, and connect the Data Terminal into the ECU. Remove all rates,
8