Cobra DCX65 2003 Owner's And Service Manual page 29

Environmental and altitude related mixture adjustments
Condition
Cold air
Warm air
Dry air
Very humid air
Low altitude
High altitude
Low barometric pressure
High barometric pressure
NOTE:
• Before making any carburetor jetting changes verify that:
o You are using the proper fuel and oil
o The fuel is fresh and uncontaminated
o The oil and fuel have been mixed in the proper ratio
o The carburetor is clean (no plugged jets)
o The air filter is properly clean and oiled
o The float height is within proper specification (proper measuring technique
is described later in this section)
NOTE:
Perform all jetting changes on a motorcycle that has been warmed up to proper
operating temperature.
The carburetor on your Cobra motorcycle is quite adjustable. Figure 8 shows its
range of adjustment and in particular what adjustable component affects what
range of operation (specifically throttle position).
AIR SCREW ADJUSTMENT:
The air adjustment screw is located on the left side of the carburetor. It is the
smaller of the two adjustment screws and requires the use of a small flat blade
Mixture will be
Leaner
Richer
Leaner
Richer
Standard
Richer
Richer
Leaner
Adjust for maximum idle speed
28
Required adjustment
Richer
Leaner
Richer
Leaner
None
Leaner
Leaner
Richer
Figure 8