Aprilia SR50R - Service manual > Engine IE 50

Engine / Engine IE 50

REMOVING THE ENGINE IE 50

To remove the crankcase, first remove the lower shield, the battery, the fuel tank, the throttle body, keep it connected to the throttle cable and drain the cooling system.
Using a belt and an A-frame, lift the vehicle rear end.
Loosen and remove the shock absorber upper screw.

Engine IE 50

Loosen and remove the two cable guide screws.

Engine IE 50

Loosen and remove the two screws.
Slide out the rear brake caliper, keep it connected to the fluid line.

Engine IE 50

Slide the two intake hoses out of the ties on the frame.

Engine IE 50

CAUTION Place some paper under the coupling to collect any oil spillage.

Disconnect the mixer oil hose
Fold the lines and tie them.

Engine IE 50

Remove the cooling system hose from the head.

Engine IE 50

Disconnect the spark plug cap.

Engine IE 50

Disconnect the fuel injector connector.

Engine IE 50

Disconnect the engine temperature sensor connector.

Engine IE 50

Disconnect the compressed air injector connector.

Engine IE 50

Working on the left side, loosen the screw and remove the ground cable.

Engine IE 50

Disconnect the starter motor positive cable connector and remove the tie.

Engine IE 50

Disconnect the two wires.

Engine IE 50

Working on the left side, loosen and remove the nut.

Engine IE 50

Working on the right side, remove the pin.
Remove the engine.

Engine IE 50

INSTALLING THE ENGINE IE 50

Move the frame in small motions until the holes match perfectly.
Working on the right side, fit the pin.

Engine IE 50

Working on the left side, tighten the nut.

Engine IE 50

Connect the two wires.

Engine IE 50

Connect the starter motor positive cable connector and place a new tie on the wiring.

Engine IE 50

Position the ground cable and tighten the screw.

Engine IE 50

Connect the connector to the compressed air injector.

Engine IE 50

Connect the engine temperature sensor connector.

Engine IE 50

Connect the connector to the fuel injector.

Engine IE 50

Fit the spark plug cap.

Engine IE 50

Position the cooling system hose onto the head.
Tighten the clamp.

Engine IE 50

Connect the mixer oil hose

Engine IE 50

Place the two intake hoses on the frame.

Engine IE 50

Fit the rear brake caliper in place.
Tighten the two screws.

Engine IE 50

Reposition the two cable guides of the rear brake fluid hose.
Tighten the two screws.

Engine IE 50

Tighten the shock absorber top screw.
Fit the throttle body, the fuel tank, the battery, the lower shield.

Engine IE 50

REMOVING THE ENGINE IE 361 To remove the crankcase, first remove the lower shield, the battery, the fuel tank, the throttle body, keep it connected to the throttle cable and drain the cooling system. Using a belt and an A-frame, lift the vehicle rear end. Loosen and remove the shock absorber upper screw. Loosen and remove the two cable guide screws. Loosen and remove the two screws. Slide out the rear brake caliper, keep it connected to the fluid line. Slide the two intake hoses out of the ties on the frame.

Aprilia SR50R - Service manual > Engine C 364

REMOVING THE ENGINE C 364 Remove the air box hose. Remove the brake caliper, see (REMOVING THE BRAKE CALIPER). Loosen and remove the fifteen screws and remove the converter cover. Release the mixer oil pump drive cable. Pinch the oil hose delivery. Remove the tie and the hose. Remove the carburetor, see (REMOVING THE CARBURETOR). Remove the spark plug cap. Disconnect the temperature sensor connector. Remove the two rear side panels, see (REMOVING THE REAR SIDE PANELS). Remove the exhaust, see (REMOVING THE EXHAUST). Disconnect the alternator connector. Loosen and remove the four screws. Remove the tie and the cover. Loosen and remove the two upper screws securing the lower cover. Loosen and remove the lower screw of the lower cover. Slide down the lower protection. Loosen and remove the screw and remove the starter motor ground cables Remove the clamp. Disconnect the connector. Loosen and remove the drain screw of the cooling system and drain it. Loosen the clamp and remove the hose on the thermostatic valve end. Using a belt and a suitable tool, lift the vehicle rear end. Remove the rear shock absorber lower screw, see (REMOVING THE REAR SHOCK ABSORBER). Working on the right side, loosen and remove the nut. Working on the opposite side, remove the pin. Remove the engine.

Aprilia SR50R - Service manual > Engine IE 50

See also:

Aprilia SR50R - Service manual > Engine IE 361

Aprilia SR50R - Service manual > Engine C 364

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