Problem

Too slow...?
Well...

But...

Is this wise?
There will be a greater load on the engine, clutch, gearbox etc., and if something is very worn, this could be the final straw.
(And maybe you destroy the pump..;)

Trimming the pump

Unscrew the lid (arrow) on the front of the pump, the diesel will now flow out.
Turn the engine until you see an Allen screw (4mm) inside the pump (light and mirror).
Turn the hexagon 5 – 10 minutes clockwise.
Screw the lid back on and bleed the pump.
Wash away diesel spills.

If you now get black exhaust; you have gone too far.

You can also increase the diesel supply by turning D on the maximum quantity regulator slightly outwards (make sure that D, E and H do not fall out).

NB! The air filter must be clean.