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FUEL SYSTEM 3-15
Carburetor
•
Remove the rear vacuum hose [A] and install t he vacuum
hose for vacuum gauge.
•
Connect:
Vacuum Gauge [A]
Special Tool - Vacuum Gauge: 57001-1369
•
Connect the fuel hose of a suitable fuel tank [B] t o the
carburetor.
•
Start the engine and read the intake vacuum of each car-
buretor when idling.
If the vacuum is out of the specified range, adjust it.
Carburetor Synchronization Vacuum
Standard: Less than 2.7 kPa (2 cmHg) difference
between carburetors
Carburetor Synchronization Adjustment
•
Turn the adjust screw [A] to synchronize the carburetors.
If the carburetor synchronization cannot be obtained by
using the adjusting screw, check for dirt or blockage, and
then check the pilot screw settings.
Special Tool - Pilot Screw Adjuster, A: 57001-1239
•
Check the carburetor synchronization again.
NOTE
○
Do not turn the pilot screws carelessly during carburetor
synchronization. You may c ause poor running at low
engine speed.
•
Check idle speed.
Fuel System Cleanliness Inspection
•
Refer to the Fuel System Cleanliness Inspection in the
Periodic Maintenance chapter.
Carburetor Removal
WARNING
Gasoline is extremely flammable and can be ex-
plosive under certain conditions. Turn the ignition
switch OFF. Do not smoke. Make sure the area is
well ventilated and free from any source of flame
or sparks; this includes any appliance with a p ilot
light.