caution! The connections of the fuel return lines do not correspond to those shown in Fig. 23-171. The connection at the top of the filter, shown by the arrow, is the fuel return line to the fuel tank.
Installing a check valve
Cut the 60 mm outlet hose behind the connecting nipple to the fuel tank.
attention! If the tank is full, close the hose behind the fitting with a clamp to prevent fuel from leaking out.
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(3-173) check valve (shown by arrow) insert into the fuel outlet line and secure with a clamp.
Attention! The arrows must point towards the fuel tank.
Shorten the existing fuel hose 1 by 60 mm by cutting off the ring fitting and install it.
Place a 60mm long piece of hose onto the transparent pipe.
Disconnect the existing outlet hose from the ring fitting of the fuel pump, pull it as far as possible into the engine compartment and connect it to the side of the regulating valve indicated by the arrow.
Install a new 5x3x700 mm outlet hose between the fuel pump and the regulating valve.
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