FUEL SYSTEM 4-11
DIAPHRAGM AND PISTON OPERATION
The carburetor is a variable-venturi type, whose venturi cross sectional area is increased or decreased auto-
matically by the piston valve
1
. The piston valve moves according to the negative pressure present on the
downstream side of the venturi
A
. Negative pressure is admitted into the diaphragm chamber
2
through an
orifice
3
provided in the piston valve
1
.
Rising negative pressure overcomes the spring
4
force, causing the piston valve
1
to rise into the dia-
phragm chamber and prevent the air velocity from increasing. Thus, air velocity in the venturi passage is
kept relatively constant for improved fuel atomization and the precise air/fuel mixture.
NEGATIVE PRESSURE
LOWER POSITION OF PISTON VALVE
UPPER POSITION OF PISTON VALVE
Содержание GSF650
Страница 1: ...GSF650 S...
Страница 34: ...PERIODIC MAINTENANCE 2 21...
Страница 86: ...3 50 ENGINE Remove the 2nd driven gear bushing A Remove the oil seal B...
Страница 90: ...3 54 ENGINE...
Страница 103: ...ENGINE 3 67 BOND 1207B should be applied to the following locations The line of BOND...
Страница 130: ...3 94 ENGINE ENGINE LUBRICATION SYSTEM...
Страница 132: ...3 96 ENGINE CYLINDER HEAD COOLING SYSTEM...
Страница 145: ...4 10 FUEL SYSTEM I D NO LOCATION Each carburetor has an I D number 1 printed on its body...
Страница 317: ...SERVICING INFORMATION 7 29 BATTERY PROTECTOR INSTALLATION Protector Protector Battery Protector 50 mm 50 mm...
Страница 332: ...Prepared by November 2004 Part No 99500 36150 01E Printed in Japan 340...
Страница 333: ...Printed in Japan K5...