On the example of the M612 engine
Bleeding air from the low pressure circuit of the fuel path (on the example of the M612 engine)
1 — The union of a returnable fuel line
2 - Ventilation hose
3 - Ventilation pump
1. Remove the cylinder head cover trim panels.
2. Disconnect from fitting (1) fuel return line.
3. Connect to the free fitting (1) ventilation hose (2).
4. Connect the vent pump to the cigarette lighter socket (3).
5. Follow the venting procedure until the fuel in the exhaust stream no longer bubbles.
6. Turn off the pump (3) and restore the original communication lines connection.
7. Installation of the removed components is made in the reverse order of their dismantling.