3-8
ENGINE
CHK
ADJ
EAS30620
CHECKING THE SPARK PLUG
1. Remove:
• Lower side cowling (right)
Refer to “GENERAL CHASSIS (3)” on page
4-3.
2. Disconnect:
• Spark plug cap
3. Remove:
• Spark plug
NOTICE
ECA13330
Before removing the spark plug, blow away
any dirt accumulated in the spark plug well
with compressed air to prevent it from falling
into the cylinder.
4. Check:
• Spark plug type
Incorrect
→
Change.
5. Check:
• Electrode “1”
Damage/wear
→
Replace the spark plug.
• Insulator “2”
Abnormal color
→
Replace the spark plug.
Normal color is medium-to-light tan.
6. Clean:
• Spark plug
(with a spark plug cleaner or wire brush)
7. Measure:
• Spark plug gap “a”
(with a wire thickness gauge)
Out of specification
→
Regap.
8. Install:
• Spark plug
TIP
Before installing the spark plug, clean the spark
plug and gasket surface.
9. Connect:
• Spark plug cap
10.Install:
• Lower side cowling (right) & other removed
parts
Refer to “GENERAL CHASSIS (3)” on page
4-3.
EAS30037
MEASURING THE COMPRESSION
PRESSURE
TIP
Insufficient compression pressure will result in a
loss of performance.
1. Measure:
• Valve clearance
Out of specification
→
Adjust.
Refer to “ADJUSTING THE VALVE CLEAR-
ANCE” on page 3-4.
2. Start the engine, warm it up for several min-
utes, and then turn it off.
3. Remove:
• Rider seat
• Lower side cowling (right)
Refer to “GENERAL CHASSIS (3)” on page
4-3.
4. Disconnect:
• Spark plug cap “1”
5. Remove:
• Spark plug
Manufacturer/model
NGK/MR8E9
Spark plug gap
0.8–0.9 mm (0.031–0.035 in)
2
1
T
R
.
.
Spark plug
13 N·m (1.3 kgf·m, 9.6 lb·ft)
BCWF8197E0.book Page 8 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...