Carburetor Check Sheet Reference Only* For General FUEL ...
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© Honda Motor Co., Ltd. Power Product Service Division 2004.12 Carburetor Check Sheet GCV520/530 GXV520/530 C OMPRESSION I GNITION F UEL Three Elements of Engine Before inspecting the fuel system, perform the minimum inspection for compression and ignition system. : Priority check Points 1 3 4 8 9 Remove foreign materials/dirt. 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 Remove foreign materials/dirt. Remove foreign materials/dirt. 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 air path clogged. Pilot jet air path clogged. Remove foreign materials/dirt. Remove foreign materials/dirt. Remove foreign materials/dirt. Remove foreign materials/dirt. Remove foreign materials/dirt. 2 5 1 3 4 Engine does not start Hard starting Engine starts but quickly stops Main jet clogged. Main nozzle air path clogged. Throttle stop screw position incorrect. Float doesn't move properly. Main nozzle clogged. Remove foreign materials/dirt. Remove foreign materials/dirt. Remove foreign materials/dirt. 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 while the 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 General Reference 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
Transcript of 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.
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
Remove foreign materials/dirt.
Remove foreign materials/dirt.
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.
Remove foreign materials/dirt.
Remove foreign materials/dirt.
Remove foreign materials/dirt.
Remove foreign materials/dirt.
Remove foreign materials/dirt.
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.
Remove foreign materials/dirt.
Remove foreign materials/dirt.
Remove foreign materials/dirt.
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
