5. ENGINE REMOVAL/INSTALLATION DOWNTOWN 125i Loosen the rear axle nut. Support the scooter securely on its main stand. Remove three bolts (1) attaching to rear brake hose clamps. Remove the two bolts (2), then remove the rear brake caliper. (2) (1) Disconnect the alternator connector (3). Disconnect the ignition pulse generator connector (4). (4) (3) (5) Release the rubber cap and remove the terminal screw (5) to disconnect the start motor cable from the start motor. 5-3