Diesel engine Series 15W / 18WInstallation and commissioning2008-12-09 496.4.1 Venting the fuel system for engines with fuel feed pump (option)NOTE!The engine has a self-venting fuel system. In thecase of the fuel tank running empty, faultlessoperation after refilling is ensured by theself-venting.The venting can be accelerated using the lever (1)on the fuel feed pump (2).Fig. 268. Using the lever (1) on the fuel feed pump (2), pump by handuntil the counter pressure becomes noticeable.This builds up the primary pressure in the fuel system andaccelerates the venting.NOTE!The 15W / 18W engine is supplied without fueltank. Due to the design, no fuel tank is included inthe scope of delivery of the 15W / 18W engine.