FUEL/ CARBURATOR
Pilot System (Idle - 3/8 Throttle)
The pilot system’s main function is to meter fuel at idle and
low speed driving. Though its main function is to supply fuel
at low speed, it does feed fuel continuously throughout the
entire operating range.
Fuel for the pilot jet is drawn from the float bowl, mixed with
air regulated by the air screw, and delivered to the engine
through the pilot outlet.
The mixture is regulated to some degree by adjusting the air
screw. When the air screw is closed, the fuel mixture is made
richer as the amount of air is reduced. When the air screw is
opened, the mixture is made more lean as the amount of air is
Increased.
Slide Cutaway (1/8 - 3/8 Throttle)
Throttle valve cutaway effect is most noticeable at 1/4 throttle
opening. The amount of cutaway is pre-determined for a given
engine to maintain a 14:1 air/fuel ratio at part throttle. A steep
angle would indicate a fairly lean mixture because there is less
resistance to air flow. A flat angle would provide a much
richer mixture because there is more resistance to air flow.
The venturi shape can be adjusted for each engine’s breathing
characteristics by using a different valve cutaway angle. A
number will be stamped into the bottom of the valve (e.g. 2.5)
indicating the size of the cutaway. The higher the number, the
steeper the angle.
6.8
Содержание 2007 GOES 300 S
Страница 9: ...GENERAL INFORMATION Vehicle Component Inspection Location 1 6 ...
Страница 39: ...CVT SYSTEM CVT EXPLODED VIEW 3 4 ...
Страница 51: ...ENGINE ENGINE EXPLODED VIEW 4 3 ...
Страница 52: ...ENGINE 4 4 ...
Страница 53: ...ENGINE OIL FLOW DIAGRAM 4 5 ...
Страница 115: ...FUEL CARBURATOR Fuel tank location 6 17 ...
Страница 125: ...BODY SUSPENSION STEERING 7 6 ...
Страница 133: ...BODY SUSPENSION STEERING 7 14 ...
Страница 142: ...BRAKES FRONT BRAKE EXPLODED VIEW 8 6 ...
Страница 188: ...ELECTRICAL 9 32 ...