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Yamaha
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Fitness & Sports
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Bicycle
Yamaha
WR250FM
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ENG
OIL PUMP
Extent of removal
Order
Part name
Q
’
ty Remarks
12
Dowel pin
1
13 Washer
1
14
Oil pump drive shaft
1
15
Rotor housing
1
2
Contents
Main
Page
Page
INTRODUCTION
Page
IMPORTANT NOTICE
SAFETY INFORMATION
Page
TO THE NEW OWNER
NOTICE
HOW TO USE THIS MANUAL
PARTICULARLY IMPORTANT INFORMATION
MANUAL FORMAT
HOW TO READ DESCRIPTIONS
ILLUSTRATED SYMBOLS (Refer to the illustration)
Illustrated symbols 1 to 7 are designed as thumb tabs to indicate the chapters number and content.
Illustrated symbols 8 to D are used to identify the specifications appearing in the text.
INFO SPEC
ADJ ENG
New
TUN
EM
Page
Page
Page
CHAPTER 4 ENGINE
CHAPTER 5 CHASSIS
Page
DESCRIPTION
GENERAL INFORMATION
DESCRIPTION
MACHINE IDENTIFICATION
Page
Page
Page
CHECKING OF CONNECTION
Page
1 - 8
Part number Tool name/How to use Illustration
1 - 9
Part number Tool name/How to use Illustration
Page
Page
Page
Page
FUEL
Page
Page
Page
Page
1 - 19
TORQUE-CHECK POINTS TORQUE-CHECK POINTS
Concerning the tightening torque, refer to MAINTENANCE SPECIFICATIONS section in the CHAPTER 2.
Page
Page
SPECIFICATIONS
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Page
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Page
*
H D
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Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
GENERAL TORQUE SPECIFICATIONS
DEFINITION OF UNITS
GENERAL TORQUE SPECIFICATIONS/ DEFINITION OF UNITS
2 - 20
2 - 21
2 - 22
2 - 23
2 - 24
2 - 25
2 - 26
2 - 27
2 - 28
3 - 1
REGULAR INSPECTION AND ADJUSTMENTS
3 - 2
3 - 3
*marked: For USA
3 - 4
PRE-OPERATION INSPECTION AND MAINTENANCE
ENGINE
ENGINE/COOLANT LEVEL INSPECTION/
Page
Page
RADIATOR CAP INSPECTION/ RADIATOR CAP OPENING PRESSURE INSPECTION
COOLING SYSTEM INSPECTION/ CLUTCH ADJUSTMENT
THROTTLE CABLE ADJUSTMENT
THROTTLE LUBRICATION/ HOT STARTER LEVER ADJUSTMENT
Page
AIR FILTER CLEANING
ENGINE OIL LEVEL INSPECTION
Page
Page
Page
OIL PRESSURE INSPECTION/ PILOT SCREW ADJUSTMENT
ENGINE IDLING SPEED ADJUSTMENT/
Page
Page
Page
3 - 23
INTAKE
EXHAUST
SPARK ARRESTER CLEANING (For USA)
CHASSIS
CHASSIS/BRAKE SYSTEM AIR BLEEDING
FRONT BRAKE ADJUSTMENT
REAR BRAKE ADJUSTMENT/ FRONT BRAKE PAD INSPECTION AND REPLACEMENT
FRONT BRAKE PAD INSPECTION AND REPLACEMENT
Page
REAR BRAKE PAD INSPECTION AND REPLACEMENT
REAR BRAKE PAD INSULATOR INSPECTION/ BRAKE FLUID LEVEL INSPECTION
SPROCKETS INSPECTION/DRIVE CHAIN INSPECTION
DRIVE CHAIN INSPECTION
DRIVE CHAIN SLACK ADJUSTMENT
FRONT FORK INSPECTION/ FRONT FORK OIL SEAL AND DUST SEAL CLEANING
FRONT FORK INTERNAL PRESSURE RELIEVING/FRONT FORK REBOUND DAMPING FORCE ADJUSTMENT
FRONT FORK COMPRESSION DAMPING FORCE
REAR SHOCK ABSORBER INSPECTION
REAR SHOCK ABSORBER SPRING PRELOAD
REAR SHOCK ABSORBER REBOUND DAMPING FORCE
REAR SHOCK ABSORBER LOW COMPRESSION DAMPING FORCE ADJUSTMENT
REAR SHOCK ABSORBER HIGH COMPRESSION DAMPING FORCE ADJUSTMENT
TIRE PRESSURE CHECK/SPOKES INSPECTION AND TIGHTENING/WHEEL INSPECTION
Page
STEERING HEAD INSPECTION AND ADJUSTMENT
LUBRICATION
ELECTRICAL/SPARK PLUG INSPECTION/ IGNITION TIMING CHECK
ELECTRICAL
IGNITION TIMING CHECK
Page
Page
Page
Page
Page
Page
BATTERY REPLACEMENT/FUSE INSPECTION
FUSE INSPECTION
REPLACING THE HEADLIGHT BULBS/ ADJUSTING THE HEADLIGHT BEAMS
4 - 1
ENGINE
1 3
Page
4 - 3
Page
4 - 5
Page
Page
4 - 8
2 Nm (0.2 m kg, 1.4 ft Ib)
3 Nm (0.3 m kg, 2.2 ft Ib)
11 Nm (1.1 m kg, 8.0 ft Ib)
4 Nm (0.4 m kg, 2.9 ft Ib)
4 - 9
CARBURETOR DISASSEMBLY
4 - 10
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Page
4 - 22
CYLINDER HEAD COVER
4 - 23
CAMSHAFTS
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Page
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Page
Page
5
4New
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4 - 31
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Page
4 - 34
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4 - 43
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bce
3New
d
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4 - 50
4 - 51
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c
ab
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4 - 58
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4 - 64
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4 - 67
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4 - 72
4 - 73
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4 - 79
4 - 80
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4 - 86
4 - 87
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4 - 92
4 - 93
4 - 94
CRANKCASE BEARING
Page
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Page
4 - 101
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Page
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Page
5 - 1
CHASSIS
FRONT WHEEL
5 - 2
REAR WHEEL
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Page
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Page
Page
Page
Page
Page
5 - 11
FRONT BRAKE
5 - 12
REAR BRAKE
5 - 13
BRAKE CALIPER DISASSEMBLY
5 - 14
BRAKE MASTER CYLINDER DISASSEMBLY
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5 - 27
5 - 28
FRONT FORK DISASSEMBLY
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5 - 40
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c
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5 - 46
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5 - 53
5 - 54
SWINGARM DISASSEMBLY
Page
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5 - 61
5 - 62
Page
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Page
6 - 1
+
K
2
ELECTRICAL
EC610000
ELECTRICAL COMPONENTS AND WIRING DIAGRAM
EC611000
ELECTRICAL COMPONENTS
MAP-CONTROLLED CDI UNIT MAP-CONTROLLED CDI UNIT
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M
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ba
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TUNING
ENGINE
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7 - 10
Examples of carburetor setting depending on symptom
*
CHASSIS
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Page
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*
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Page
7 - 21
Suspension setting Front fork
7 - 22
Rear shock absorber
