3-6
ENGINE
CHK
ADJ
• Hold the adjusting screw to prevent it from
moving and tighten the locknut to specifi-
cation.
d. Measure the valve clearance again.
e. If the valve clearance is still out of specifi-
cation, repeat all of the valve clearance
adjustment steps until the specified clear-
ance is obtained.
7. Install:
• All removed parts
EAS30031
ADJUSTING THE ENGINE IDLING SPEED
TIP
• Prior to adjusting the engine idling speed, the
air filter element should be clean, and the en-
gine should have adequate compression.
• Engine should be warm.
1. Start the engine and let it warm up for several
minutes.
2. Remove:
• Rider seat
Refer to “GENERAL CHASSIS (1)” on page
4-1.
3. Connect:
• Yamaha diagnostic tool
Refer to “YAMAHA DIAGNOSTIC TOOL” on
page 8-32.
4. Check:
• Engine idling speed
Out of specification
→
Adjust.
NOTICE
Check the RPM when coolant temperature is
at 80–100°C.
5. Remove:
• Lower side cowling (left)
Refer to “GENERAL CHASSIS (3)” on page
4-3.
6. Adjust:
• Engine idling speed
a. Turn the idle adjusting screw “1” in direc-
tion “a” or “b” until the specified engine
idling speed is obtained.
TIP
Preferably set the RPM on lower side of specifi-
cation.
WARNING
Never adjust RPM by screw at pulley “1”.
Tappet screw holder
YSST-706
(90890-04154)
Tappet adjusting socket
YSST-706A
T
R
.
.
Valve adjusting screw locknut
7 N·m (0.7 kgf·m, 5.2 lb·ft)
Yamaha diagnostic tool
INS-018
(90890-03267)
INS-019
(90890-03264)
Engine idling speed
1300–1500 r/min
Direction “a”
Engine idling speed is increased.
Direction “b”
Engine idling speed is decreased.
BCWF8197E0.book Page 6 Thursday, November 18, 2021 9:18 AM
Summary of Contents for R15 2022
Page 6: ...BCWF8197E0 book Page 2 Thursday November 18 2021 9 18 AM...
Page 56: ...1 49 GEN INFO SPECIAL TOOLS BCWF8197E0 book Page 49 Thursday November 18 2021 9 18 AM...
Page 109: ...2 52 CABLE ROUTING SPEC ABS System BCWF8197E0 book Page 52 Thursday November 18 2021 9 18 AM...
Page 142: ...3 30 ELECTRICAL SYSTEM CHK ADJ BCWF8197E0 book Page 30 Thursday November 18 2021 9 18 AM...
Page 308: ...5 71 TRANSMISSION ENG BCWF8197E0 book Page 71 Thursday November 18 2021 9 18 AM...
Page 330: ...7 11 THROTTLE BODY FI BCWF8197E0 book Page 11 Thursday November 18 2021 9 18 AM...
Page 333: ...BCWF8197E0 book Page 2 Thursday November 18 2021 9 18 AM...
Page 344: ...8 11 CHARGING SYSTEM ELEC BCWF8197E0 book Page 11 Thursday November 18 2021 9 18 AM...
Page 348: ...8 15 LIGHTING SYSTEM ELEC BCWF8197E0 book Page 15 Thursday November 18 2021 9 18 AM...
Page 360: ...8 27 COOLING SYSTEM ELEC BCWF8197E0 book Page 27 Thursday November 18 2021 9 18 AM...
Page 488: ...8 155 ELECTRICAL COMPONENTS ELEC BCWF8197E0 book Page 155 Thursday November 18 2021 9 18 AM...
Page 495: ...BCWF8197E0 book Page 1 Thursday November 18 2021 9 18 AM...
Page 496: ...1Y245 SM 01 1578 10 21 E BCW F8197 E0 BCWF8197E0 book Page 2 Thursday November 18 2021 9 18 AM...