THE FUEL SYSTEM

To Drain And Clean The Fuel Tank

. The fuel tank bottom is equipped with drain plug 5 (fig. 2).

. To drain the water of the tank, unscrew the plug 5 about two turns, then retighten the plug as soon as water free fuel flows out.

. To empty the tank remove the cover 4 and drain plug 5, and drain the fuel into a suitable container.

. Regularly check the tank and screen filter 6 for contamination.

. If necessary, replace the fuel screen filter 6 and/or flush the fuel tank.

To Drain The Water Separator Of The Fuel Filters

. Das Bild 3 zeigt :

. Pos. 1 = 1st . stage (Precleaner)

. Fig. 4 shows

. Pos. 2 = 2nd. stage (Fine filter)

. Drain the contaminant from the fuel system daily.

. Open drain plug 3 (fig. 3) of filter element 1 precleaner.

. Drain the water until fuel emerges, then tighten the drain plug.

. Repeat this process on filter element 2 (fine filter).

To Replace The Filter Elements

. Remove the fuel filter elements.

. Lightly grease the seal of the new filter elements and reinstall the elements

. After that, bleed the fuel system.

To Bleed The Fuel System

. Unscrew the bleeder screw 7 on the fine filter about 2 or 3 turns (fig. 4).

Remove the hand pump on the fuel pump (fig. 5) and pump it until the fuel draining from the bleeder valve contains no more air bubbles.

Tighten the bleeder screw (fig. 4).

Loosen the fuel line from filter on the injection pump, apply hand pump and pump it until the fuel contains no more air bubbles

Tighten the fuel line (fig. 6).

Unscrew the overflow valve, use the hand pump and pump it until the fuel contains no more air bubbles.

Tighten the overflow valve (fig. 7).

On injection lines, loosen the union nuts on the injection valves, actuate the starter until the fuel contains no more air bubbles.

Tighten the union nuts (fig. 8).

Start the engine and check the connections for leaks

If the engine starts wrong, repeat the bleeding procedure, if necessary.