ENGINE INSPECTION
5-1
EAS1TP1047
ENGINE INSPECTION
EAS20710
MEASURING THE COMPRESSION
PRESSURE
The following procedure applies to all of the cyl-
inders.
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:
• Rear cylinder right cover
Refer to “ENGINE REMOVAL” on page 5-3.
4. Disconnect:
• Spark plug caps
5. Remove:
• Spark plug
NOTICE
ECA13340
Before removing the spark plugs, use com-
pressed air to blow away any dirt accumulat-
ed in the spark plug wells to prevent it from
falling into the cylinders.
6. Install:
• Compression gauge “1”
• Extension “2”
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 engine
until the reading on the compression gauge
stabilizes.
TIP
The difference in compression pressure be-
tween cylinders should not exceed 100 kPa (1.0
kgf/cm², 14.5 psi).
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 min-
imum specification, pour a teaspoonful of en-
gine oil into the spark plug bore and measure
again.
Refer to the following table.
▲▲▲
▲
▲ ▲▲▲
▲
▲ ▲▲▲
▲
▲ ▲▲▲
▲
▲ ▲▲▲
▲
▲ ▲▲▲
▲
▲▲▲
8. Install:
• Spark plug
9. Connect:
• Spark plug caps
Compression gauge
90890-03081
Engine compression tester
YU-33223
Extension
90890-04136
2
1
Standard compression pressure
(at sea level)
1400 kPa/400 r/min (14.0
kgf/cm²/400 r/min, 199.1 psi/400
r/min)
Minimum-maximum
1250–1500 kPa (12.5–15.0
kgf/cm², 177.8–213.3 psi)
Compression pressure (with oil applied into
the cylinder)
Reading
Diagnosis
Higher than without
oil
Piston ring(s) wear or
damage
→
Replace.
Same as without oil
Piston, valves or cyl-
inder head gasket
possibly defective
→
Replace.
T
R
.
.
Spark plug
13 Nm (1.3 m·kgf, 9.4 ft·lbf)
Summary of Contents for XVS950CU 2014
Page 1: ...2014 SERVICE MANUAL XVS950CU XVS950CUE 1XC 28197 E0...
Page 6: ......
Page 8: ......
Page 73: ...LUBRICATION POINTS AND LUBRICANT TYPES 2 30...
Page 76: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 33 EAS20410 LUBRICATION DIAGRAMS...
Page 78: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 35...
Page 79: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 36 1 Camshaft 2 Crankshaft...
Page 80: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 37...
Page 81: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 38 1 Oil drain bolt 2 Crankshaft...
Page 82: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 39...
Page 100: ...CABLE ROUTING except for ABS models 2 57 Spark plug lead B A 2 2 1 1 C F 3 4 5 6 7 8 10 D E 9...
Page 112: ...CABLE ROUTING except for ABS models 2 69 Fuel tank breather hose right side view 1 2 3 A B...
Page 114: ...CABLE ROUTING except for ABS models 2 71 Intake air pressure sensor hose top view 1 B C 2 A...
Page 132: ...CABLE ROUTING for ABS models 2 89 Front brake hose front and right side view 1 A B 1 1 1 2 C D...
Page 138: ...CABLE ROUTING for ABS models 2 95 Spark plug lead 3 3 4 4 5 6 7 8 9 10 11 12 C D A B 1 1 2 2...
Page 150: ...CABLE ROUTING for ABS models 2 107 Fuel tank breather hose right side view 1 2 3 A B...
Page 152: ...CABLE ROUTING for ABS models 2 109 Intake air pressure sensor hose top view 1 B C 2 A...
Page 156: ...CABLE ROUTING for ABS models 2 113...
Page 159: ......
Page 288: ...BELT DRIVE 4 97...
Page 293: ...ENGINE INSPECTION 5 2 10 Install Rear cylinder right cover Refer to ENGINE REMOVAL on page 5 3...
Page 399: ...IGNITION SYSTEM 7 8...
Page 407: ...ELECTRIC STARTING SYSTEM 7 16...
Page 413: ...CHARGING SYSTEM 7 22...
Page 429: ...SIGNALING SYSTEM 7 38...
Page 481: ...FUEL INJECTION SYSTEM 7 90...
Page 487: ...FUEL PUMP SYSTEM 7 96...
Page 499: ...IMMOBILIZER SYSTEM 7 108...
Page 537: ...ABS ANTI LOCK BRAKE SYSTEM for ABS models 7 146...
Page 540: ...ELECTRICAL COMPONENTS 7 149 1 2 5 7 10 8 9 6 16 15 14 13 4 3 11 12...
Page 574: ......
Page 575: ......
Page 576: ......