![](https://motoinstruction.ru/img/aprilia/11/117467.jpg)
Charge system test
Start the engine and rev it up to 6000 rpm.
Measure DC voltage across battery terminals using a multimeter set to the DC voltage scale.
Switch on the low beam lights.
Correct voltage reading is 13.5 to 15 Volts.
![](https://motoinstruction.ru/img/aprilia/11/117468.jpg)
Troubleshooting
Check the condition of the 20A fuse.
Check the connections of flywheel, regulator and fuse leads.
Check the flywheel.
Check the battery; see 8.3.1.
Replace the regulator with one known to work properly.