Caution! Never disconnect plug connection on ignition system while engine is running.
Removing right engine housing cover
Remove fasteners of cable cover (1).
Disconnect the plug of the stator (4) from connector (2).
Disconnect the plug of ignition trigger (3).
Remove retainer on right engine housing cover.
Remove central plug and install handle, BMW No. 125500.
Remove the cover, noting the thrust washer (arrow).
Unscrew hex nut.
Heat hub to 80°C (176°F).
Note: Use temperature measuring device, BMW No. 00 1 900, to check the temperature.
Using puller, BMW No. 12 5 510, pull off magnet rotor.
Removing/installing ignition trigger
Remove fasteners securing ignition trigger (2) in right cover.
Remove cable holder (1).
Remove the rubber grommet of ignition trigger (4) from the cover.
Remove ignition trigger (3).
Installation is the reverse of the removal procedure: pay particular attention to the following.
Coat the rubber grommet of the ignition trigger with 3 Bond 1209 before inserting it into the cover.
Tightening torque:
- Ignition trigger in cover: 8 Nm
Removing/installing stator
Remove cable holder (5).
Remove fasteners securing stator (6).
Remove the rubber grommet of stator (7) from the cover.
Installation is the reverse of the removal procedure: pay particular attention to the following.
Coat the rubber grommet of the stator with 3 Bond 1209 before inserting it into the cover.
Clean the threads of the screws and coat with Loctite 243.
Tightening torque:
- Stator to cover (clean threads + Loctite 243): 10 Nm
- Cable holder to cover: 8 Nm