Fuel filter
1. Unscrew the stopper (74/1) and, accordingly, a hollow bolt (74).
2. Remove the fuel filter from below.
3. Insert a new fuel filter. Screw in the stopper and, accordingly, the hollow bolt with new O-rings (76) And (76/1).
Fuel coarse filter
1. Unscrew holder (70/3). Remove the fuel line (70/4). Remove the fuel pre-filter (70/1).
2. Insert a new fuel pre-filter (70/1) and screw it together with the holder.
3. Fit the fuel line (70/4).
4. Start the engine and make it run at about 1500 rpm. This automatically bleeds air from the fuel injection system.
Attention! The engine must not stall, as it subsequently only restarts after relatively long starting attempts.
5. Visually check the fuel filter and fuel pre-filter for leaks with the engine running.