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GX630 • GX660 • GX690 Technical Manual
F
S
UEL
YSTEM
GX630 • GX660 • GX690 Technical Manual
This engine is supplied with an incomplete fuel system (no fuel tank, no fuel hose, etc.). As such, the OEM is
responsible for ensuring evaporative emission regulations are met. See page 31 and the Emissions Regulations Guide
F
S
UEL
YSTEM
for additional information.
Fuel Tank Position
This engine is supplied with an incomplete fuel system (no fuel tank, no fuel hose, etc.). As such, the OEM is
responsible for ensuring evaporative emission regulations are met. See page 31 and the Emissions Regulations Guide
The fuel tank must be installed so that its maximum gasoline level is within 50 cm (19.5 in) above or below the
for additional information.
carburetor gasoline level.
Fuel Tank Position
Fuel Line
The fuel tank must be installed so that its maximum gasoline level is within 50 cm (19.5 in) above or below the
Use a low permeation fuel line (displaying an Executive Order number) rated for use with gasoline. The fuel line should
carburetor gasoline level.
have an inside dimension of 5.5 mm (0.22 in). Keep the fuel line as short as possible. Install the fuel line so it will not
rest against any sharp objects or make sharp bends that can restrict the flow of fuel. If the fuel line passes through an
Fuel Line
enclosure wall, protect the line with a rubber grommet. Secure the fuel line with the appropriate clamping mechanism.
Use a low permeation fuel line (displaying an Executive Order number) rated for use with gasoline. The fuel line should
Route the fuel line away from hot engine and exhaust system components and away from electrical wiring. Secure the
have an inside dimension of 5.5 mm (0.22 in). Keep the fuel line as short as possible. Install the fuel line so it will not
fuel line to prevent sagging and bending.
rest against any sharp objects or make sharp bends that can restrict the flow of fuel. If the fuel line passes through an
enclosure wall, protect the line with a rubber grommet. Secure the fuel line with the appropriate clamping mechanism.
Fuel Valve
Route the fuel line away from hot engine and exhaust system components and away from electrical wiring. Secure the
Install the fuel valve so it is easily accessible. Install the fuel valve at the outlet of the fuel tank and use an easily read
fuel line to prevent sagging and bending.
label to indicate valve location and operation. If under the fuel tank is not the ideal location, securely install the fuel
valve in-line with the fuel tube in a cool location, so that engine heat cannot cause vapor lock.
Fuel Valve
Fuel Pump
Install the fuel valve so it is easily accessible. Install the fuel valve at the outlet of the fuel tank and use an easily read
label to indicate valve location and operation. If under the fuel tank is not the ideal location, securely install the fuel
A fuel pump should be selected that provides an operating pressure of 0.1 kgf/cm
valve in-line with the fuel tube in a cool location, so that engine heat cannot cause vapor lock.
(4.0 US gal/hr). The carburetor inlet float valve has a closing pressure of 0.2 kgf/cm
is used, its operating pressure must not exceed the standard fuel pump's operating pressure (to prevent carburetor
Fuel Pump
flooding).
A fuel pump should be selected that provides an operating pressure of 0.1 kgf/cm
Fuel Tank Filter Installation
(4.0 US gal/hr). The carburetor inlet float valve has a closing pressure of 0.2 kgf/cm
is used, its operating pressure must not exceed the standard fuel pump's operating pressure (to prevent carburetor
It is recommended that a fuel tank strainer with a mesh rating of #80 be installed at the fuel tank inlet to catch debris
flooding).
when refueling. It is also recommended that a fuel tank sump be provided at the fuel tank outlet to reduce the chance of
contaminants entering the fuel system.
Fuel Tank Filter Installation
Fuel-cut Solenoid
It is recommended that a fuel tank strainer with a mesh rating of #80 be installed at the fuel tank inlet to catch debris
when refueling. It is also recommended that a fuel tank sump be provided at the fuel tank outlet to reduce the chance of
The fuel-cut solenoid on the carburetor takes power from the battery and there is continuity in the solenoid when the
contaminants entering the fuel system.
engine is running. Removing the battery when the engine is running will cause the engine to stop.
Fuel-cut Solenoid
C
ONTROLS
The fuel-cut solenoid on the carburetor takes power from the battery and there is continuity in the solenoid when the
engine is running. Removing the battery when the engine is running will cause the engine to stop.
Engine Switch
Use a three-position engine switch with continuity between its terminals as shown.
C
ONTROLS
Wire Color
Engine Switch
Switch Position
Use a three-position engine switch with continuity between its terminals as shown.
OFF
Wire Color
ON
Switch Position
START
OFF
ON
START
© 2009 American Honda Motor Co., Inc — All Rights Reserved
© 2009 American Honda Motor Co., Inc — All Rights Reserved
C O N N E C T
IGN
GND
(Bl)
(G)
IGN
GND
(Bl)
(G)
W I T H
C O N F I D E N C E
2
(1.4 psi) and delivers 15 liters/hr
2
(2.8 psi). If a secondary fuel pump
2
(1.4 psi) and delivers 15 liters/hr
2
(2.8 psi). If a secondary fuel pump
BAT
LO
(W)
(Bl/Y)
BAT
LO
(W)
(Bl/Y)
ST
(Bl/W)
ST
(Bl/W)
7
7
™
9
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