3-9
ENGINE
CHK
ADJ
NOTICE
ECA13350
Before removing the spark plug, use com-
pressed air to blow away any dirt accumulat-
ed in the spark plug well to prevent it from
falling into the cylinder.
6. Install:
• Compression gauge “1”
7. Measure:
• Compression pressure
Out of specification
→
Refer to steps (c) and
(d).
a. Set the main switch to “ON”.
b. With the throttle wide open, crank the en-
gine until the reading on the compression
gauge stabilizes.
c. If the compression pressure is above the
maximum specification, check the cylinder
head, valve surfaces and piston crown for
carbon deposits.
Carbon deposits
→
Eliminate.
d. If the compression pressure is below the
minimum specification, pour a teaspoonful
of engine oil into the spark plug bore and
measure again.
Refer to the following table.
8. Remove:
• Compression gauge
9. Install:
• Spark plug
10.Connect:
• Spark plug cap
11.Install:
• Lower side cowling (right)
• Upper panel (right)
• Rider seat
Refer to “GENERAL CHASSIS (3)” on page
4-3.
EAS30656
CHECKING THE ENGINE OIL LEVEL
1. Stand the vehicle on a level surface.
TIP
• Place the vehicle on a maintenance stand.
• Make sure the vehicle is upright.
2. Start the engine, warm it up for several min-
utes, and then turn it off.
3. Check:
• Engine oil level
The engine oil level should be between the
minimum level mark “a” and maximum level
mark “b”.
Below the minimum level mark
→
Add the
recommended engine oil to the proper level.
TIP
• Before checking the engine oil level, wait a few
minutes until the oil has settled.
• Do not screw the engine oil filler cap (dipstick)
“1” in when checking the oil level.
Compression gauge
INS-009
(90890-03081)
Compression pressure
696-896 kPa/550 r/min (7.0-9.0
kgf/cm
2
/550 r/min, 99.0-127.4
psi/550 r/min)
Compression pressure (with oil applied into the
cylinder)
Reading
Diagnosis
Higher than without oil
Piston ring(s) wear or
damage
→
Repair.
Same as without oil
Piston, valves, cylinder
head gasket or piston
possibly defective
→
Repair/Replace.
T
R
.
.
Spark plug
13 N·m (1.3 kgf·m, 9.6 lb·ft)
BCWF8197E0.book Page 9 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...
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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...
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