VT80BL Instruction Manual
Page 8
JETS MUNT S.L
Engine installation: Fuel system
Install the fuel system components as seen in the picture:
Connect the fuel pump to the ecu. Check the colors. If connector is placed reversed, the
pump will run backwards.
Pump: Note that the fuel pump has an arrow engraved in the front face indicating the
direction of the fuel flow.
Never disassemble the fuel pump, warranty from pump manufacturer will become void.
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 4mm clear tubing supplied,
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.
Do not run the engine without the fuel filter.
Finally connect the fuel pump engine as shown. The fuel pump is a delicate element,
dropping it on the floor can damage it, always handle with care and install using the provided
mount, leave the motor part loose so that it don’t move in respect to the pump part.
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 ECU supplied is supplied programmed for the VT80. 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. 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, mixes and throttle travel settings in the transmitter. Before doing
any adjustment on the ecu, check that your transmitter is sending the correct signal by
checking the reading of “Pulse” in the data terminal. I should be between 900-1050uS at
STOP, position, between 1100 and 1300uS at IDLE position and between 1800 and 2200 at
Full Power position. Please note that these readings on the ecu are measured directly from
the signal received from your RC system, so you should readjust your transmitter if the
values read are outside that the ones suggested.
The setup assumes the use of a transmitter with manual trims.
If you use a TX with digital trims, is essential to use the switch in the TX
programmed for the function "Throttle cut", or “engine cut” which normally has the
effect of producing the “trim-down” function. Using a digital trim cause unstable idle,
and excessive delay in shutting off the engine in emergency.
Check your radio manual for this before you start. DO NOT use the digital trim in any
case.
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