- Check that the cone at the end of
the fuel flow control pin and the float
connector stud spring are in good
condition: if they are not in good
condition, replace with a new com-
ponent.
- Check the condition of the cold start
piston valve. Replace the unit if
signs of damage are found on the
vulcanised sealing seat, or on the
metal piston body itself (scratches
and/or corrosion exceeding 25% of
the total surface area).
- Check the size of the jets with refe-
rence to the numbering stamped on
the jets, and install the correct jets
(see table of adjusts); failure to
observe this will have a negative
effect on the performance of the
engine.
- Check the position of the doser
conical needle circlip. This should
be located in the central ring of the
five available. By moving the circlip
to a ring further up the needle a
weaker mixture is obtained, and by
moving the circlip further down the
needle a richer mixture is obtained;
this is to allow adjustment for very
extreme climatic conditions.
4-4
