ENGINE
3-7
EAS20570
SYNCHRONIZING THE THROTTLE BODIES
NOTE:
Prior to synchronizing the throttle bodies, the
valve clearance should be properly adjusted
and the ignition timing should be checked.
1. Stand the vehicle on a level surface.
NOTE:
Place the vehicle on a suitable stand.
2. Remove:
• Rider seat
Refer to "GENERAL CHASSIS" on page 4-
1.
• Fuel tank side covers
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
• Air filter case
Refer to "GENERAL CHASSIS" on page 4-
1.
3. Remove:
• Synchronizing hoses “1”
4. Install:
• Vacuum gauge “1”
(onto the synchronizing hose)
5. Install:
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
6. Start the engine and let it warm up for sev-
eral minutes.
7. Check:
• Engine idling speed
8. Adjust:
• Throttle body synchronization
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Basic procedure
a. Start the engine, warm it up for several
minutes, and then let it run at the specified
engine idling speed.
b. Turn the bypass air screw "1" with a white
paint mark out a little, and then turn it in
fully.
c. Using the throttle body that has the bypass
air screw with a white paint mark as the
standard, turn the bypass air screws with-
out white paint marks in or out to the adjust
the other throttle bodies.
Vacuum gauge
90890-03094
Carburetor synchronizer
YU-44456
Engine idling speed
1150–1250 r/min
Engine idling speed
1150–1250 r/min
Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys
email: info@motomatrix.co.uk