The rectifier/regulator consists of an aluminium casing containing the diodes that rectify the current produced by the alternator. It also contains an electronic device that regulates the current supplied by the alternator in accordance with battery voltage.
If the battery is drained, the current has the value necessary to restore optimum operating conditions of the battery.
In contrast, if the battery is fully charged, the current value will be lower.
Note: Check the charging current using the DDS tester, following the instructions given in the paragraph "Testing the battery charging system".
Removal of the regulator
Unscrew the screws (1) securing the LH air scoop (2) to the frame.
Release the clutch hose (A) from the LH air scoop (2).
Unscrew the screw (3) amd remove the LH air scoop (2) from the RH air scoop (4).
Undo the screws (5) and remove the RH air scoop (4) from the frame.
Disconnect the alternator/regulator connector (B) from the main wiring harness (Routing of wiring on frame).
Remove the regulator (7) from the RH air scoop (4) by unscrewing the two screws (6).
Caution! Do not disconnect the battery cables when engine is running because this would cause irreparable damage to the regulator.
Refitting the regulator
Check that the two threaded clips (8) are installed on the RH air scoop (4) and positioning as shown in the figure.
Fix the regulator (7) to the RH air scoop (4) with the two screws (6).
Tighten the screws (6) to the specified torque (Frame torque settings).
Connect the alternator/regulator connector (B) to the main wiring harness (Routing of wiring on frame).
Refit the RH air scoop (4) and tighten the screws (5) to the specified torque (Frame torque settings).
Fix the clutch hose (A) to the LH air scoop (2).
Refit the LH air scoop (2) to the RH air scoop (4) with the screws (3).
Refit the LH air scoop (2) to the frame and tighten the screws (1) to the specified torque (Frame torque settings).
Note: To position the regulator wiring correctly, designated (14), follow the indications in plate E in the chapter "Routing of wiring on frame".
Regulator fuse
The 30 A fuse located on the airbox protects the electronic regulator. To gain access to the fuse, remove the fuel tank (Removal of the fuel tank) and disconnect the regulator (A).
A blown fuse can be identified by breakage of the inner filament (B).
Caution! Switch the ignition key to OFF before replacing a fuse to avoid possible short circuits.
Warning! Never use a fuse with a rating other than the specified value. Failure to observe this rule may damage the electric system or even cause fire.