
ENGINE
3-10
TIP
Before installing the spark plug, clean the spark
plug and gasket surface.
9. Connect:
• Spark plug
10.Remove:
• Bottom cowling
Refer to “GENERAL CHASSIS” on page 4-1.
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. Remove:
• Bottom cowling
Refer to “GENERAL CHASSIS” on page 4-1.
3. Start the engine, warm it up for several min-
utes, and then turn it off.
4. Disconnect:
• Spark plug cap
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”
7. Measure:
• Compression pressure
Out of specification
→
Refer to steps (c) and
(d).
▼▼▼
▼
▼ ▼▼▼
▼
▼ ▼▼▼
▼
▼ ▼▼▼
▼
▼ ▼▼▼
▼
▼ ▼▼▼
▼
▼▼▼
a. Turn 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
kg/cm², 14 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.
T
R
.
.
Spark plug
13 Nm (1.3 m·kg, 9.4 ft·lb)
Compression gauge
90890-03081
Engine compression tester
YU-33223
Standard compression pressure
(at sea level)
1400 kPa/360 r/min (199.1
psi/360 r/min) (14.0 kgf/cm²/360
r/min)
Minimum–maximum
1220–1570 kPa (173.5–223.3 psi)
(12.2–15.7 kgf/cm²)
1
Содержание 2009 XP500Y TMAX
Страница 1: ...2009 SERVICE MANUAL XP500Y LIT 11616 22 08 4B5 28197 10 ...
Страница 6: ......
Страница 8: ......
Страница 26: ...SPECIAL TOOLS 1 17 ...
Страница 47: ...TIGHTENING TORQUES 2 20 Cylinder head tightening sequence ...
Страница 56: ...LUBRICATION SYSTEM DIAGRAMS 2 29 1 2 3 4 4 ...
Страница 57: ...LUBRICATION SYSTEM DIAGRAMS 2 30 1 Secondary shaft 2 Drive axle 3 Clutch 4 Crankshaft ...
Страница 60: ...COOLING SYSTEM DIAGRAMS 2 33 1 2 3 4 5 6 7 8 9 10 11 12 ...
Страница 64: ...CABLE ROUTING 2 37 A B A C D E F G H I J K L 1 2 1 2 3 3 4 5 6 6 7 A A A A A A A A ...
Страница 72: ...CABLE ROUTING 2 45 A A A B B C C E E D D E A B C C B E A B C D E F G H I 1 1 1 1 3 3 3 3 3 2 2 4 ...
Страница 74: ...CABLE ROUTING 2 47 A A B A B A B C D E F G B G G H I J J K L M O 1 2 1 2 3 3 4 4 5 5 6 7 8 9 10 Q P N ...
Страница 78: ...CABLE ROUTING 2 51 ...
Страница 81: ......
Страница 115: ......
Страница 172: ...FRONT FORK 4 57 2 3 ...
Страница 186: ...SWINGARM AND TRANSMISSION CHAIN DRIVE 4 71 ...
Страница 259: ...CRANKCASE 5 70 M6 35 mm bolts 3 5 Check Crankshaft and transmission operation Rough movement Repair 1 2 2 1 3 3 2 1 ...
Страница 270: ...TRANSMISSION 5 81 ...
Страница 294: ...THROTTLE BODY 7 9 ...
Страница 297: ......
Страница 309: ...CHARGING SYSTEM 8 12 2 AC magneto 3 Rectifier regulator 14 Battery 15 Main fuse ...
Страница 311: ...CHARGING SYSTEM 8 14 ...
Страница 321: ...SIGNALING SYSTEM 8 24 ...
Страница 325: ...COOLING SYSTEM 8 28 ...
Страница 353: ...FUEL PUMP SYSTEM 8 56 ...
Страница 354: ...ELECTRICAL COMPONENTS 8 57 EAS27971 ELECTRICAL COMPONENTS 1 10 2 3 4 5 6 7 8 11 12 14 15 16 17 18 19 13 9 ...
Страница 356: ...ELECTRICAL COMPONENTS 8 59 2 1 3 4 5 6 10 8 9 11 7 ...
Страница 376: ...ELECTRICAL COMPONENTS 8 79 ...
Страница 383: ......
Страница 384: ...YAMAHA MOTOR CO LTD 2500 SHINGAI IWATA SHIZUOKA JAPAN ...