Engine fuel supply system of motorcycle Aprilia RS125/3 (1998-2005)

Fuel tank removal
Read 1.2.1 carefully. Torque wrench settings: Fuel tank rear mounting bolt (3): 7 Nm (0.7 Kgm). Note. It is not necessary to drain the fuel. Lift the fuel tank; see 2.9.1. Withdraw the fuel hose (1) from the carburetor. Cut the ties and withdraw the...

Draining the fuel tank
Read 1.3.1 carefully. Danger! Fire hazard! Allow the engine and exhaust silencers to cool down completely. Fuel vapours are harmful to human health. Ensure that the room is well ventilated before proceeding. Do not inhale fuel vapours. Do not smoke...

Complete removal of the fuel cock
Torque wrench settings: Fuel cock retaining screws: 3 Nm (0.3 kg·m) Read 1.2.1 and 1.3.1 carefully. Drain the fuel tank; see 4.1.2. Remove the fuel tank; see 4.1.1. Release and remove the two screws (1). Remove the complete fuel cock (2).

Airbox removal
Torque wrench settings: Screws (1): 5 Nm (0.5 Kgm). Screws (2): 5 Nm (0.5 Kgm). Remove the fuel tank; see 4.1.1. Release and remove the two screws (1). Release and remove the two screws (2) and collect the nuts from beneath the screws. Remove the...

Air cleaner removal
Torque wrench settings: Screws (1): 5 Nm (0.5 Kgm). Screws (2): 5 Nm (0.5 Kgm). Lift the fuel tank; see 2.9.1. Release and remove the two screws (1). Release and remove the two screws (2) and collect the nuts from beneath the screws. Remove the...

Carburetor removal
Read 1.2.1 and 1.3.1 carefully. Remove the airbox. Slacken the clip (1). Ease the carburetor (2) off the intake manifold. Block off the intake manifold with a cloth to prevent the ingress of debris into the engine. Release and remove the two screws...

Removing the fuel feed filter
Read 1.2.1 and 1.3.1 carefully. Close the fuel cock. Lift the fuel tank; see 2.9.1. Release and remove the screw (1). Remove the cap (2). Remove the fuel filter (3). Note. Place some paper under the cap to collect any fuel spillage.

Carburetor specifications
Description Dimensions Countries Model Carburetor phbh 28 bd B-D-E-F-I-SF 11kW-MP phbh 28-bd AUS-B-D- DK-E-GR-J-NL-P-SGP -UK f.p. phbH 28-Rd CH f.p.-MP phbh 28 bd - 11 kW -SF phbH 28-Bd D 80km phbH 28-Bd A 11 kW -MP Tapered needle 25/3a...