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Carburetors; Idling Speed Inspection; Idle Speed Adjustment; Carburetor Synchronization Inspection - Kawasaki ZR-7S Service Manual

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2-10 FUEL SYSTEM
Carburetors
Idling Speed Inspection
.
Start the engine and warm it up thoroughly.
.
With the engine idling, turn the handlebar to both sides to
check for any changes in the idle speed.
*If
handlebar
movement
changes
the idle speed, the
throttle cables may be improperly adjusted or incorrectly
routed, or damaged.
Be sure to correct any of these
conditions
before riding (see Cable, Wire, and Hose
Routing section in General Information chapter).
A
WARNING
Operation with an incorrectly routed, improperly
adjusted,
or damaged cables could result in an
unsafe riding condition.
.
Check idle speed.
*If the idle speed is out of standard, adjust it.
Idle Speed
Standard:
California and
Taiwan Model
1 100 :1:50r/min (rpm)
1 300 :1:50r/min (rpm)
Idle Speed Adjustment
.
Start the engine and warm it up thoroughly.
.
Turn the adjusting screw [A] until the idle speed is correct.
.
Open and close the throttle a few times to make sure that
the idle speed is within the specified range. Readjust if
necessary.
Carburetor Synchronization Inspection
. Start the engine and warm it up thoroughly.
.
Check idle speed (see Idle Speed Inspection).
.
Remove the fuel tank (see Fuel Tank Removal).
.
Prepare an auxiliary fuel tank to supply fuel to the carbu-
retors.
. For the California model, remove the vacuum hoses [A]
and inlet pipe plug [B] from the carburetor.
.
For the models other than the California model, remove
the #1,3 inlet pipe lugs and #2,3 vacuum hoses.
.
Connect a vacuum gauge hoses [A] to the fitting of the
carburetor.
Vacuum Gauge [B]
.
Start the engine and read the intake vacuum of each car-
buretor at idle.
*If the vacuum is incorrect, adjust the synchronization.
Carburetor
Synchronization
Vacuum
Standard:
Less than 2.7 kPa (2 cmHg, 0.39 psi)
difference
between any two carburetors.

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