Synchronizing The Throttle Bodies - Yamaha FJR1300A(D) Service Manual

Engine idling speed
1000–1100 r/min
3. Check:
• ISC (idle speed control) learning value
"00" or "01" → Check the intake system.
"02" → Clean the throttle bodies.
Refer to "CHECKING AND CLEANING THE
THROTTLE BODIES" on page 7-7.
▼ ▼▼▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼
a. Connect the Yamaha diagnostic tool.
Use the diagnostic code number "67".
Refer to "SELF-DIAGNOSTIC FUNCTION
AND DIAGNOSTIC CODE TABLE" on page
9-5.
b. Check the ISC (idle speed control) leaning
value.
▲ ▲▲▲ ▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲
EAS20570

SYNCHRONIZING THE THROTTLE BODIES

TIP
Before synchronizing the throttle bodies, check
the following items:
• Valve clearance
• Spark plugs
• Air filter element
• Throttle body joints
• Fuel hose
• Exhaust system
• Breather hoses
Checking the throttle body synchronization
1. Stand the vehicle on a level surface.
TIP
Place the vehicle on the centerstand.
2. Remove:
• Rider seat
Refer to "GENERAL CHASSIS" on page 4-1.
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
• T-bar
Refer to "GENERAL CHASSIS" on page 4-1.
3. Remove:
• Caps "1"
▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼
▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲
PERIODIC MAINTENANCE
1
▼▼▼
4. Install:
• Vacuum gauge "1"
▲▲▲
5. Install:
• Fuel tank
6. Check:
• Throttle body synchronization
▼ ▼▼▼ ▼ ▼▼▼ ▼
a. Start the engine, warm it up for several min-
utes, and then let it run at the specified en-
gine idling speed.
b. Check the vacuum pressure.
If out of specification → Adjust the throttle
body synchronization.
▲ ▲▲▲ ▲ ▲▲▲ ▲
3-8
1
Vacuum gauge
90890-03094
Vacuummate
YU-44456
▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼
Engine idling speed
1000–1100 r/min
The difference in vacuum pres-
sure between the throttle bodies
should not exceed 1.33 kPa (10
mmHg).
▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲
1
▼ ▼▼▼ ▼ ▼▼▼
▲ ▲▲▲ ▲ ▲▲▲