Toothed Belt Drive — Design Description (Mazda 121 (3))

1. Upper timing belt cover; 2. Lower timing belt cover; 3. V-belt pulley, vibration damper; 4. Crankshaft bolt; 5. Crankshaft sprocket for camshaft timing belt; 6. Crankshaft sprocket for fuel injection pump drive; 7. Rear timing belt cover; 8. Fuel injection pump drive sprocket.