ENGINE INSPECTION
5-1
EBS20105
ENGINE INSPECTION
EBS30135
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 3-3.
2. Start the engine, warm it up for several min-
utes, and then turn it off.
3. Remove:
• Frame cross member
Refer to “GENERAL CHASSIS (9)” on page
4-19.
4. Disconnect:
• Spark plug cap
5. Remove:
• Spark plug
NOTICE
ECB01870
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:
• Extension “1”
• Compression gauge “2”
7. Measure:
• Compression pressure
Out of specification
→
Refer to steps (b) and
(c).
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a. With the throttle wide open, crank the engine
by turning the main switch to “
” (start) until
the reading on the compression gauge stabi-
lizes.
WARNING
EWB03200
To prevent sparking, ground the spark plug
lead before cranking the engine.
b. If the compression pressure is above the
maximum specification, check the cylinder
head, valve surfaces and piston crown for
carbon deposits.
Carbon deposits
→
Eliminate.
c. 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.
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8. Install:
• Spark plug
TIP
Before installing the spark plug, clean the spark
plug and gasket surface.
9. Connect:
• Spark plug cap
Extension
90890-04136
Compression gauge
90890-03081
Engine compression tester
YU-33223
2
1
Standard compression pressure
(at sea level)
650–1000 kPa (6.5–10.0 kgf/cm²,
92.4–142.2 psi)
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
ring(s) possibly defec-
tive
→
Repair.
T
R
.
.
Spark plug
Specified angle 30°–45°
Summary of Contents for Wolverine YX70EPNG
Page 1: ...2016 17 SERVICE MANUAL YX70EPNG YXE70WPXG YXE70WPHG YXE70WDXG YXE700E YXE700SE 2MB G8198 E0 ...
Page 6: ......
Page 8: ......
Page 11: ...IDENTIFICATION 1 2 ...
Page 32: ...SPECIAL TOOLS 1 23 ...
Page 60: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 27 EBS30023 LUBRICATION DIAGRAMS 6 1 2 3 4 5 7 8 9 3 ...
Page 62: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 29 1 2 3 4 5 ...
Page 64: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 31 3 6 1 2 7 8 4 5 ...
Page 66: ...COOLING SYSTEM DIAGRAMS 2 33 EBS20021 COOLING SYSTEM DIAGRAMS 6 1 2 2 6 1 3 4 4 5 5 ...
Page 68: ...COOLING SYSTEM DIAGRAMS 2 35 4 3 3 4 1 2 ...
Page 70: ...COOLING SYSTEM DIAGRAMS 2 37 2 1 4 3 5 6 ...
Page 74: ...CABLE ROUTING 2 41 Frame center left view A B 1 2 3 3 4 5 6 7 8 9 10 ...
Page 78: ...CABLE ROUTING 2 45 Frame center right view 1 2 3 4 5 6 7 8 9 A B B C A D E ...
Page 84: ...CABLE ROUTING 2 51 Frame center top view 1 FWD A B C 1 2 3 4 5 6 7 8 9 10 11 ...
Page 86: ...CABLE ROUTING 2 53 Frame center top view 2 FWD 1 2 2 3 3 4 4 3 4 5 6 A B C D D D E F G 7 ...
Page 88: ...CABLE ROUTING 2 55 Fuel tank top view FWD A A B C D D D 1 1 2 2 1 3 3 4 3 4 ...
Page 90: ...CABLE ROUTING 2 57 Front brake caliper left view A 1 2 3 3 3 B B ...
Page 92: ...CABLE ROUTING 2 59 Rear brake caliper left view A B B C C C 1 2 A A C D 1 2 2 2 ...
Page 94: ...CABLE ROUTING 2 61 Front brake caliper top view A B B C D 1 2 3 3 ...
Page 96: ...CABLE ROUTING 2 63 Brake pipe top and left view FWD FWD A A A 1 1 1 ...
Page 97: ...CABLE ROUTING 2 64 1 Rear brake pipe A Fasten the rear brake pipe with the holder ...
Page 98: ...CABLE ROUTING 2 65 Rear brake caliper top view A A B B B C C C 1 2 2 ...
Page 100: ...CABLE ROUTING 2 67 Parking brake left view A B 1 1 1 1 ...
Page 104: ...CABLE ROUTING 2 71 ...
Page 140: ...PERIODIC MAINTENANCE 3 35 ...
Page 148: ...GENERAL CHASSIS 2 4 5 1 b a a ...
Page 210: ...REAR ARMS AND REAR SHOCK ABSORBER ASSEMBLIES 4 67 ...
Page 215: ...ENGINE INSPECTION 5 2 10 Install Frame cross member Refer to GENERAL CHASSIS 9 on page 4 19 ...
Page 262: ...SHIFT LEVER 5 49 T R Drive select lever shift rod lock nut 15 Nm 1 5 m kgf 11 ft lbf ...
Page 308: ...MIDDLE GEAR 5 95 ...
Page 319: ...THERMOSTAT 6 10 Refer to CHECKING THE RADIATOR on page 6 6 ...
Page 375: ......
Page 385: ...ELECTRIC STARTING SYSTEM 9 10 ...
Page 389: ...CHARGING SYSTEM 9 14 ...
Page 403: ...SIGNALING SYSTEM 9 28 ...
Page 443: ...FUEL PUMP SYSTEM 9 68 ...
Page 460: ...ELECTRICAL COMPONENTS 9 85 3 4 10 12 2 1 9 8 7 5 6 13 14 11 ...
Page 462: ...ELECTRICAL COMPONENTS 9 87 6 1 4 5 3 2 11 8 19 18 17 16 15 14 10 9 7 8 13 12 12 ...
Page 486: ...ELECTRICAL COMPONENTS 9 111 ...