Starting Enrichment; Carburetor Removal/Installation - Arctic Cat Cougar Service Manual

FUEL SYSTEM-CARBURETED MODELS
When the throttle is completely open, the
amount of fuel drawn into the air stream is lim-
ited by the size of the main jet (Figure 7).
The changes from the idle mixture circuit to
the intermediate (jet needle) range to high speed
(main jet) is transitional.
Starting Enrichment
Choke lever (Figure 8) located on the control
console operates the starting enrichment system.
When the engine is cold, move the choke lever
®
®
Air
CARBURETOR OPERATION
(Throttle Opening 1/8 to 1/4)
---J1et
needle
-:==-:=::::::::-----Fuel
CARBURETOR OPERATION
(Throttle Opening 1/4 to 3/4)
Jet needle
213
to the full choke position to enrich the air-fuel
mixture for starting.
RemovaVInstallation
NOTE
Carburetors are often different for the
left, right or center cylinders. The carbu-
retors should be marked to indicate the
original cylinder location. Parts should
be similarly marked as they are removed.
A simple way is to apply a different col-
ored mark to the the parts for each loca-
tion.
1. Open the hood.
2. Label the hoses at the carburetors before de-
taching them from the carburetor. Loosen the
hose clamps, then pull the hoses from the fittings
on the carburetors.
NOTE
The throttle slide operates in a machined
bore in the carburetor body and should
always remain with that carburetor
body. Mark the parts before removing to
ensure correct assembly.
CARBURETOR OPERATION
(Throttle Opening 3/4 to Full)
Needle jet
Air