
FUEL AND CARBURETOR
6-3
CARBURETION SPECIFICATIONS
COBRA 400 KEIHIN
Type
CVK AK4 BWGH
Air Screw
1 1/2 Return
Jet Needle
NJDB
Slide Valve
3.0
Pilot Jet
#90
Main Jet
#125
E-clip Position
4th From Top
OPERATION OVERVIEW
The engine of a vehicle is operated under a wide range of
conditions, from idling with the throttle valve remaining
almost closed, to full load or maximum output with the throttle
valve fully opened. In order to meet the requirements for the
proper mixture ratio under these varying conditions, a low
speed fuel system, or pilot system, and a main fuel system are
provided in these types of carburetors.
The function of a carburetor is to produce a combustible
air/fuel mixture by breaking fuel into tiny particles in the form
of vapor, to mix the fuel with air in a proper ratio, and to
deliver the mixture to the engine. A proper ratio means an
ideal air/fuel mixture that can burn without leaving an excess
of fuel or air. Whether the proper mixture ratio is maintained
or not is the key to efficient engine operation.
This carburetor has varying operations depending upon
varying driving conditions. It is constructed of a float system,
pilot system, main system, and starter system or initial starting
device.
Summary of Contents for AT56-69E
Page 35: ...MAINTENANCE 2 25 ...
Page 45: ...CVT SYSTEM 3 4 CVT EXPLODED VIEW ...
Page 56: ...ENGINE 4 3 ENGINE ILLUSTRATION ENGINE EXPLODED VIEW ...
Page 57: ...ENGINE 4 4 ...
Page 58: ...ENGINE 4 5 COOLING SYSTEM EXPLODED VIEW ...
Page 59: ...ENGINE 4 6 OIL FLOW DIAGRAM ...
Page 125: ...FUEL AND CARBURETOR 6 15 FUEL TANK SYSTEM ...
Page 135: ...BODY SUSPENSION STEERING 7 6 SUSPENSION ...
Page 142: ...BODY SUSPENSION STEERING 7 13 STEERING ...
Page 151: ...BRAKES 8 6 FRONT BRAKE EXPLODED VIEW MASTER CYLINDER ...
Page 196: ...ELECTRICAL 9 31 WIRE DIAGRAM ...