Synchronizing The Throttle Bodies; Checking The Throttle Body Synchronization - Yamaha FZ8NA Service Manual

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5. Adjust:
• Throttle cable free play
Refer to "ADJUSTING THE THROTTLE
CABLE FREE PLAY" on page 3-30.
Throttle cable free play
3.0–5.0 mm (0.12–0.20 in)
EAS20571

SYNCHRONIZING THE THROTTLE BODIES

TIP
Before synchronizing the throttle bodies, check
the following items:
• Valve clearance
• Spark plugs
• Air filter element
• Throttle body hoses
• Throttle body joints
• Fuel hoses
• Air induction system
• Exhaust system
• Breather hoses
• Vacuum hoses
• Fast idle plunger outlet hose
• Fast idle plunger inlet hose

Checking the throttle body synchronization

1. Stand the vehicle on a level surface.
TIP
Place the vehicle on a suitable stand.
2. Remove:
• Rider seat
Refer to "GENERAL CHASSIS" on page
4-1.
• Inner panel/side panel/front cowling side
panel (FZ8SA)
Refer to "GENERAL CHASSIS" on page
4-1.
PERIODIC MAINTENANCE
• 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)
• Digital tachometer
(Use goods on the market)
Vacuum gauge
90890-03094
Vacuummate
YU-44456
5. Install:
• Air filter case
Refer to "GENERAL CHASSIS" on page
4-1.
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
6. Check:
• Throttle body synchronization
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a. Start the engine, warm it up for several
minutes, and then let it run at the specified
engine idling speed.
3-9