Choke Adjustment - Cagiva Navigator Workshop Manual

CHOKE ADJUSTMENT

The choke is a cold start system that mechanically opens the butter-
fly valve by utilising a cam. The cam is made to rotate by the cable
and it pushes the butterfly valve rod attachment. The butterfly valve
therefore opens allowing the engine to turnover from cold at a maxi-
mum of 2000 rpm (20°÷30°).
• Connect the revcounter.
• Switch on the engine and let it turn over to heat it up
• Adjust the tickover to 1300÷1350 rpm.
• Completely rotate the choke lever 1 and check the rpm of the choke
system. If the speed of the engine is not as specified, adjust to
2000 rpm as follows.
• Remove the left hand fuel tank as described in page B-4.
• Completely pull the choke cable and check that the cam A touches
the stop B. If not, adjust with the cable lock adjuster 2.
• Switch on the engine and completely rotate the choke lever 1.
• Adjust the choke speed to 2000 rpm by rotating the choke screw
adjuster 3.
• After having adjusted the choke, adjust the tickover speed to
1300÷1350 rpm.
Choke rpm: 2000 rpm (cold engine 20°÷30°)
Tickover rpm:
Locknut
Throttle lever stop
screw
C.66
INJECTION - AIR INTAKE SYSTEM
: 1300÷1350 rpm
Choke screw
3
adjuster
Butterfly valve balance
screw adjuster
1
2
B
A
3
Butterfly spindle
support
Choke cam