2007 Aprilia SR 50 R Factory "5 valve ignition" Questions

...5. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched. 6. Fuel valve/petcock or filter clogged. 7. Discharged battery, check battery terminals for damage or ...

...5. An obstructed fuel line or fuel shutoff valve (carbureted models). 6. Obstructed fuel filter. 7. Clogged carburetor jets. 8. Malfunctioning fuel pump (fuel injected models). 9. Loose battery ...