Throttle Body Synchronization - Yamaha RS90GTZ Service Manual

THROTTLE BODY SYNCHRONIZATION

2-16
THROTTLE BODY SYNCHRONIZATION
TIP
Prior to synchronizing the throttle bodies, the
valve clearance should be properly adjusted.
1. Remove:
• Fuel tank cover
Refer to "FUEL TANK" in CHAPTER 5.
• Headlight assembly
Refer to "COWLINGS" in CHAPTER 3.
• Headlight stay
Refer to "THROTTLE BODY" in CHAPTER
7.
2. Remove:
• Vacuum cap
3. Install:
• Carburetor synchronizer (vacuum gauge)
• Digital tachometer
(Use goods on the market.
Recommended goods: Kaise SK-8401)
Carburetor synchronizer:
YU-44456
Vacuum gauge:
90890-03094
4. Start the engine and let it warm up for sev-
eral minutes, and then let it run at specified
engine idling speed.
Engine idle speed:
1,250 ~ 1,350 r/min
5. Adjust:
• Throttle body synchronization
INSP
ADJ