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Nexus 500
injection warning light turns on or further errors or wrong parameters are present, it is necessary to carry
out the relevant controls indicated in the manual. In such a case, there is a real fault evidently.
Refitting the butterfly valve
- Carry out the removal operations but in reverse
order, tighten the 3 fixing screws to the prescribed
torque.
Locking torques (N*m)
Throttle body fixing screws
Pump supply circuit
The control unit starts the pump in the following conditions:
- by setting the switch to «ON» with the emergency switch to «RUN» and side stand raised. The pump
does not supply.
- If the rpm-timing signal is received. Continuous supply.
The initial timing is useful to bleed the system especially after a stop with engine in temperature. In
these conditions, the fuel altered by boiling will be mixed with that in the tank.
During use, the pump operation will be subject to the engine speed.
Circuit check
Proceed as follows:
1 - Set the switch to "ON" with emergency switch to "RUN" and side stand raised. The pump rotates for
2 seconds.
YES go to 2 NO go to 3
2 - Try to start up. Check that the engine speed matches the pump rotation.
YES go to 4 NO go to 5
3 - The pump does not rotate, or it rotates uninterruptedly.
YES go to 5
4 - The pump power supply is conforming.
5 - Connect the diagnostic tester to the scooter system.
YES go to 6
Specific tooling
020460Y Scooter diagnosis and tester
11 ÷ 13
Injection
INJEC - 217
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