21
MAN-028
NOTE: (L) may need to be fine tuned again after a jet change. If so proceed as
above.
PROCEDURE FOR CHANGING FIXED SIDE JET
1. Remove sealing screw and gasket using a flat ended screwdriver turning anti-clockwise
(see fig.1)
Fig. 1
2. Remove fixed jet using a 3mm flat ended screwdriver turning anti-clockwise. Ensure
the screwdriver is securely located in jet slot before turning as slot is easily damaged
(see fig.2)
Fig. 2
3. When replacing jet place jet in threaded orifice and carefully turn clockwise until
threads are engaged. Using a light hand pressure screw jet in fully until it touches the
sealing seat. Then secure jet using a medium hand pressure (5 Lb/In or 0.565 Nm if
using a torque screw driver). Over torqueing will distort sealing seat and brass jet.
4. Replace sealing screw and gasket turning in a clockwise direction again using only a
medium hand pressure to secure in position (8 Lb/In or 0.904 Nm if using a torque
screwdriver). There is only 4÷5 full threads of engagement so over torqueing will cut
the threads and render the carburetor unserviceable.
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