Page 31 of 457

2-3
ENGINE SPECIFICATIONSSPEC
ItemStandardLimit
Oil filter
Oil filter type
Bypass valve opening pressure
Paper
80 120 kPa (0.8 1.2 kg / cm2,
0.8 1.2 bar, 11.6 17.4 psi)
Oil pump
Oil pump type
Inner-rotor-to-outer-rotor-tip
clearance
Outer-rotor-to-oil-pump-housing
clearance
Trochoid
0.01 0.10 mm
(0.0004 0.0039 in)
0.09 0.15 mm
(0.00035 0.0059 in)
0.18 mm
(0.0071 in)
0.22 mm
(0.0087 in)
Cooling system
Radiator capacity
Radiator cap opening pressure
Radiator core
Width
Height
Depth
Coolant reservoir
Capacity
Water pump
Water pump type
Reduction ratio
Max. impeller shaft tilt
2.51 L (2.21 Imp qt, 2.65 US qt)
108 137 kPa (1.08 1.37 kg / cm2,
1.0 1.3 bar, 15.6 19.9 psi)
380 mm (14.96 in)
258 mm (10.2 in)
24 mm (0.94 in)
0.25 L (0.22 Imp qt, 0.26 US qt)
Single suction centrifugal pump
65 / 43 25 / 32 (1.181)
0.15 mm
(0.006 in)
Starting system typeElectric starter
Spark plugs
Model (manufacturer) quantity
Spark plug gap
CR9EK (NGK) 4
0.6 0.7 mm (0.0236 0.0276 in)
Cylinder head
Volume
Max. warpage
12.5 13.1 cm3 (0.76 0.80 cu.in)
0.10 mm
(0.0039 in)
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2-7
ENGINE SPECIFICATIONSSPEC
ItemStandardLimit
Piston
Piston-to-cylinder clearance
Diameter D
Height H
Piston pin bore (in the piston)
Diameter
Offset
Offset direction
Piston pins
Outside diameter
Piston-pin-to-piston-pin-bore
clearance
Piston rings
Top ring
Ring type
Dimensions (B T)
End gap (installed)
Ring side clearance
2nd ring
Ring type
Dimensions (B T)
End gap (installed)
Ring side clearance
Oil ring
Dimensions (B T)
End gap (installed)
0.010 0.035 mm (0.0004 0.0014 in)
76.975 76.990 mm (3.0305 3.0311 in)
5 mm (0.20 in)
17.002 17.013 mm
(0.6694 0.6698 in)
0.5 mm (0.0197 in)
Intake side
16.991 17.000 mm
(0.6689 0.6693 in)
0.002 0.022 mm (0.0001 0.0009 in)
Barrel
0.90 2.75 mm (0.04 0.11 in)
0.15 0.25 mm (0.0059 0.0098 in)
0.030 0.065 mm (0.0012 0.0026 in)
Taper
0.80 2.75 mm (0.03 0.11 in)
0.30 0.45 mm (0.0118 0.0177 in)
0.020 0.055 mm (0.0008 0.0022 in)
1.50 2.25 mm (0.06 0.09 in)
0.10 0.40 mm (0.0039 0.0158 in)0.120 mm
(0.0047 in)
17.043 mm
(0.6710 in)
16.971 mm
(0.6682 in)
0.072 mm
(0.0028 in)
0.50 mm
(0.0197 in)
0.115 mm
(0.0045 in)
0.80 mm
(0.0315 in)
0.115 mm
(0.0045 in)
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Page 38 of 457

2-10
ENGINE SPECIFICATIONSSPEC
ItemStandardLimit
Transmission
Transmission type
Primary reduction system
Primary reduction ratio
Secondary reduction system
Secondary reduction ratio
Operation
Gear ratios
1st gear
2nd gear
3rd gear
4nd gear
5th gear
6th gear
Max. main axle runout
Max. drive axle runout
Constant mesh, 6-speed
Spur gear
65 / 43 (1.512)
Chain drive
45 / 17 (2.647)
Left-foot operation
38 / 15 (2.533)
33 / 16 (2.063)
37 / 21 (1.762)
35 / 23 (1.522)
30 / 22 (1.364)
33 / 26 (1.269)
0.08 mm
(0.0032 in)
0.08 mm
(0.0032 in)
Shifting mechanism
Shift mechanism type
Max. shift fork guide bar bending
Shift drum / Guide bar
0.10 mm
(0.0039 in)
Air filter typeOil coated paper element
Fuel pump
Pump type
Model (manufacturer)
Output pressure
Electrical
5PW (DENSO)
294 kPa (2.94 kg / cm
2, 2.94 bar, 42.6 psi)
Throttle position sensor
Resistance
Output voltage (at idle)
4.9 5.1 kΩ at 20C (68F)
0.63 0.73 V
Throttle bodies
Model (manufacturer) quantity
Intake vacuum pressure
Throttle cable free play (at the flange
45EIDW (MIKUNI) 2
22 kPa (165 mmHg, 6.4966 inHg)
3 5 mm (0.12 0.20 in)
of the throttle grip)
ID mark
Throttle valve size
5VY1 00 (USA)
5VY5 10 (CAL)
#100
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2-16
ELECTRICAL SPECIFICATIONSSPEC
ItemStandardLimit
Indicator light
(voltage / wattage quantity)
Neutral indicator light
High beam indicator light
Oil level warning light
Turn signal indicator light
Fuel level warning light
Coolant temparture indicator light
Engine trouble warning light
Shift timing indicator light
LED 1
LED 1
LED 1
LED 2
LED 1
LED 1
LED 1
LED 1
Electric starting system
System type
Starter motor
Model (manufacturer)
Power output
Brushes
Overall length
Spring force
Armature coil resistance
Commutator diameter
Mica undercut
Constant mesh
5VY (YAMAHA)
0.9 kW
10.8 mm (0.43 in)
5.28 7.92 N (538 808 g,
18.99 28.48 oz)
0.0090 0.0110 Ω at 20C (68F)
24.5 mm (0.96 in)
1.5 mm (0.06 in)
3.6 mm
(0.14 in)
23.5 mm
(0.93 in)
Starter relay
Model (manufacturer)
Amperage
Coil resistance
2768079-A (JIDECO)
180 A
4.18 4.62 Ω at 20C (68F)
Horn
Horn type
Model (manufacturer) quantity
Max. amperage
Performance
Coil resistance
Plane
YF-12 (NIKKO) 1
3 A
105 113 db / 2 m
1.15 1.25 Ω at 20C (68F)
Turn signal relay
Relay type
Model (manufacturer)
Self-cancelling device built-in
Turn signal blinking frequency
Wattage
Full transistor
FE218BH (DENSO)
No
75 95 cycles / min.
21 W 2 + 3.4 W
Oil level switch
Model (manufacturer)
5VY (SOMIC ISHIKAWA)
EXUP servo motor
Model (manufacturer)
5VY (YAMAHA)
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Page 47 of 457

2-19
TIGHTENING TORQUESSPEC
Use a lock
washer
TIGHTENING TORQUES
ENGINE TIGHTENING TORQUES
ItemFastenerThreadQ’tyTightening torqueRemarksItemFastenersizeQtyNmmkgftlbRemarks
Spark plugs—M104131.39.4
Cylinder headNutM1010See NOTE 1
BoltM62121.28.7
Camshaft capsBoltM628101.07.2
Cylinder head coverBoltM66121.28.7
Cylinder head (exhaust pipe)Stud boltM88151.511
Air indication system capBoltM64101.07.2
Camshaft sprocketsBoltM74242.417
Cylinder head and throttle bodyClampM5430.32.2
Connecting rod capsBoltM8820+1502.0+15014+150
Generator rotorBoltM101606.043
Timing chain tensionerBoltM62101.07.2
Water pump outlet pipeBoltM61101.07.2
Water pump inlet pipeBoltM61101.07.2
(water pump side)
Water pump inlet pipe (front side)BoltM61101.07.2
Oil / water pump assembly
sprocketBoltM61151.511
Water pumpBoltM62121.28.7
Thermostat coverNutM62101.07.2
Thermostat inlet pipeBoltM61101.07.2
Oil coolerBoltM201636.346
Engine oil drain boltBoltM141434.331
Oil pipeBoltM62101.07.2
Oil strainerBoltM63101.07.2
Oil delivery pipeBoltM63101.07.2
Oil filter union boltBoltM201707.051
Oil filter—M201171.712
Oil panBoltM614121.28.7
Oil panBoltM61121.28.7
Air filter case coverScrewM5101.70.171.2
Throttle body and throttle body
jointClampM5430.32.2
Throttle body and funnelBoltM564.20.423.0
Throttle cableNutM614.50.453.3
Throttle cable adjusterBoltM614.50.453.3
Stator coilScrewM63141.410
Generator rotor cover and
bearing housingScrewM63101.07.2
Pull lever coverBoltM62101.07.2
Thermostat assembly stayBoltM62101.07.2
Starter clutch idler gearBoltM61101.07.2
Clutch bossNutM201959.569Stake
Clutch springBoltM66101.07.2
Drive sprocketNutM221858.561
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Page 53 of 457

2-25
LUBRICATION POINTS AND LUBRICANT TYPESSPEC
EAS00031
LUBRICATION POINTS AND LUBRICANT TYPES
ENGINE
Lubrication point
Lubricant
Oil seal lips
O-rings
Bearings
Crankshaft pins
Piston surfaces
Piston pins
Crankshaft journals
Camshaft lobes
Camshaft journals
Valve stems (intake and exhaust)
Valve stem ends (intake and exhaust)
Water pump impeller shaft
Oil pump rotors (inner and outer)
Oil pump housing
Oil strainer
Clutch (pull rod)
Oil / water pump drive sprocket and washer
Clutch (thrust plate)
Starter clutch idle gear inner surface
Starter clutch assembly
Primary driven gear
Transmission gears (wheel and pinion)
Main axle and drive axle
Shift drum
Shift forks and shift fork guide bars
Shift shaft
Shift shaft boss
Cylinder head cover mating surfaceYamaha bond
No.1215
Crankcase mating surfaceYamaha bond
No.1215
Clutch cover (crankcase mating surface)Yamaha bond
No.1215
Generator rotor cover (crankcase mating surface)Yamaha bond
No.1215
Pickup rotor coverYamaha bond
No.1215
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Page 54 of 457
2-26
LUBRICATION POINTS AND LUBRICANT TYPESSPEC
EAS00032
CHASSIS
Lubrication point
Lubricant
Steering bearings and bearing races (upper and lower)
Throttle grip inner surface
Brake lever pivoting point and metal-to-metal moving parts
Clutch lever pivoting point and metal-to-metal moving parts
Engine mount bolts (rear upper and lower)
Relay arm, connecting rod and rear shock absorber collar
Pivot shaft
Swingarm pivot bearing
Swingarm head pipe end, oil seal and bush
Oil seal (relay arm, connecting arm and rear shock absorber)
Seat lock assembly moving parts
Sidestand pivoting pint and metal-to-metal moving parts
Link and sidestand switch contact point
Sidestand hook and spring
Shift shaft joint
Front wheel oil seal (right and left)
Front axle shaft
Rear wheel oil seal
Rear wheel drive hub oil seal
Rear wheel drive hub mating surface
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Page 57 of 457
2-29
ENGINE OIL LUBRICATION CHARTSPEC
ENGINE OIL LUBRICATION CHART
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