Chapter 5 – Fuel feed system
Service manual AJP PR3/PR4 5 - 18
Choke lever:
Place the washer plate in the air lever pin in
the carburetor body.
Install the choke lever, without forgetting its
sphere.
Assemble the plate / retaining spring in the
correct position and tighten the PH M5x10
screw.
Check the correct operation of the choke
lever, in synchronization with the butterfly.
The retention of the lever must be made in
three predefined positions as:
- Air closed (switch up);
- Heating position (the lever in the middle);
- Open air (all switch down).
Carburetor aspect with cable in choke lever
actuated by a small lever located in the
dimmer switch on the left handlebar grip, used
in early models of PR4.
The plate / retaining spring is replaced by the
support for the cable, and on the tab is fitted a
spring to make the return of the lever of the air
at fully open position.
Carburetor adjustment
The adjustment should be performed after
being made a thorough cleaning the
carburetor. In order to allow a setting as
accurate as possible, it is very important to
closely follow the technical specifications
recommended by AJP Motos, as shown in the
specification table for regulation of carburetors
(page 5-23)
Carburetor installation on the bike
Enter the carburetor a bit skewed to the left
side, with the choke lever turned for the shock
absorber.
