Download - Carburetor Check Sheet Reference Only* For General FUEL ...

© Honda Motor Co., Ltd. Power Product Service Division 2004.12

Carburetor Check SheetGCV520/530GXV520/530 COMPRESSION IGNITION

FUELThree

Elements of Engine

Before inspecting the fuel system, perform the minimuminspection for compression and ignition system.

: Priority check Points1 3 4 8 9

Remove foreign materials/dirt.


Overflow Gasoline leaks

Float valve worn or coated with foreign materials/dirt.

Valve seat worn or coated with foreign materials/dirt.

8

9

10

Don't damage the seat surface

Fuel cut solenoid valve Connect the 12V battery to the fuel cut solenoid valve connector as shown.Check the needle of the valve, it should retract in when powered.

12

ON OFF

11



Unstable idle speed Poor performance at low speed

Pilot jet clogged.

Pilot jet air path clogged.

2

1

Engine speed does not increase Poor performance at high speed Unstable engine speed

Pilot jet clogged.

Main jet clogged.

Main nozzle clogged.

Main nozzle airpath clogged.

Pilot jet air path clogged.






2

5

1

3

4

Engine does not start Hard starting Engine starts but quickly stops

Main jet clogged.

Main nozzle airpath clogged.

Throttle stop screw positionincorrect.

Float doesn'tmove properly.

Main nozzle clogged.




5

6

7

Set correct idle speed.

Remove foreign materials around float pin.

3

4

Drain gasoline from the float chamber by loosening the drain screw whilethe engine is stopped.

Engine storage (More than 3 months) Water inside the float chamber

can cause engine failure.Remove float chamber and clean or replace.

For GeneralReference Only*

10

12

6

5

2

3 4

9

7 11

8 1

: Air flow : Fuel flow : Mixture

Carburetor Jet Cleaner Set (07JPZ-001010B) Carburetor cleaning tool is useful for removing foreign materials/dirt.

* See specific shop manual for detailed information OTR53786-A

Tammy Filkins

Honda b/w