PERIODIC MAINTENANCE
3-10
5. Install:
• Air filter case
Refer to “AIR FILTER CASE” on page 7-5.
• Fuel tank
Refer to “FUEL TANK” on page 7-1.
6. Check:
• Throttle body synchronization
a. Start the engine, warm it up for several
minutes, and then let it run at the specified
engine idling speed.
b. Check the vacuum pressure.
If out of specification
→
Adjust the throttle
body synchronization.
Adjusting the throttle body synchronization
1. Adjust:
• Throttle body synchronization
a. Start the engine, warm it up for several
minutes, and then let it run at the specified
engine idling speed.
b. Using the throttle body that has the bypass
air screw “1” with a white paint mark as the
standard, adjust the other throttle bodies
by turning its bypass air screw in or out.
NOTICE
ECA21300
Do not turn the bypass air screw (white paint
mark) of the throttle body that is the stan-
dard. Otherwise, the engine may run roughly
at idle and the throttle bodies may not oper-
ate properly.
TIP
• Turn the bypass air screw using the carburetor
angle driver.
• After each step, rev the engine two or three
times, each time for less than a second, and
check the synchronization again.
• If a bypass air screw was removed, turn the
screw in fully and be sure to synchronize the
throttle bodies.
• If the throttle body synchronization can not be
adjusted using the bypass air screw, clean or
replace the throttle bodies.
• The difference in vacuum pressure between
the throttle bodies should not exceed 1.33 kPa
(10 mmHg).
2. Stop the engine and remove the measuring
equipment.
3. Install:
• Caps
• Service hose cap
4. Install:
• Air filter case
Refer to “AIR FILTER CASE” on page 7-5.
• Fuel tank
Refer to “FUEL TANK” on page 7-1.
• Rider seat
Refer to “GENERAL CHASSIS (1)” on page
4-1.
Vacuum gauge
90890-03094
Vacuummate
YU-44456
Engine idling speed
1200–1400 r/min
Difference in vacuum pressure
between the cylinders
0 kPa-1.3 kPa (0 mmHg-10
mmHg, 0 inHg-0.4 inHg)
Engine idling speed
1200–1400 r/min
1
Carburetor angle driver 2
90890-03173
1
Summary of Contents for YZF-R1 2020
Page 1: ...2020 SERVICE MANUAL YZF R1 YZF R1M YZF1000L YZF1000 YZF1000DL YZF1000D B3L 28197 20 ...
Page 2: ......
Page 6: ......
Page 8: ......
Page 38: ...SPECIAL TOOLS 1 29 ...
Page 55: ...TIGHTENING TORQUES 2 16 ...
Page 60: ...CABLE ROUTING 2 21 Frame rear right side view B A C D 2 1 2 3 4 5 6 7 ...
Page 82: ...CABLE ROUTING 2 43 Front brake hose left side view A 1 1 1 1 2 2 2 3 3 3 4 4 4 3 4 ...
Page 86: ...CABLE ROUTING 2 47 Fuel tank top and left side view A B 1 2 3 4 5 2 5 ...
Page 88: ...CABLE ROUTING 2 49 Canister A E 1 2 3 4 5 6 B B B C D 7 8 9 10 E F G H E 7 10 11 ...
Page 92: ...CABLE ROUTING 2 53 Air cut off valve right side view A B C C D E 1 2 2 3 3 3 4 4 5 5 5 6 7 ...
Page 100: ...CABLE ROUTING 2 61 Muffler top and left side view 1 1 2 3 3 4 5 5 6 6 4 4 5 6 5 6 A ...
Page 104: ...CABLE ROUTING 2 65 ...
Page 107: ......
Page 149: ......
Page 171: ...GENERAL CHASSIS 5 4 22 T R Front muffler protector bolt 7 N m 0 7 kgf m 5 2 lb ft b b a a 1 ...
Page 280: ...CHAIN DRIVE 4 131 ...
Page 335: ...ELECTRIC STARTER 5 52 1 2 3 a b ...
Page 388: ...TRANSMISSION 5 105 ...
Page 406: ...WATER PUMP 6 17 ...
Page 433: ......
Page 439: ...IGNITION SYSTEM 8 6 ...
Page 447: ...CHARGING SYSTEM 8 14 ...
Page 451: ...LIGHTING SYSTEM 8 18 ...
Page 486: ...ELECTRICAL COMPONENTS 8 53 ...
Page 495: ......
Page 505: ...SYSTEM DIAGRAM 9 10 ...
Page 531: ...STEERING DAMPER SYSTEM 9 36 ...
Page 815: ...91_ABS 9 320 4 Defective hydraulic unit assembly Replace the hydraulic unit assembly ...
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