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PERIODIC MAINTENANCE AND ADJUSTMENT
6-31
6
Engine overheatingEWA10400
Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be
blown out under pressure, which could cause serious injury. Be sure to wait until the engine has cooled.
After removing the radiator cap retaining bolt, place a thick rag, like a towel, over the radiator cap, a\
nd then
slowly rotate the cap counterclockwise to the detent to allow any residual pressure to escape. When the his-
sing sound has stopped, press down on the cap while turning it counterclockwise, and then remove the cap.
TIP
If coolant is not available, tap water can be temporarily used instead, \
provided that it is changed to the recommended
coolant as soon as possible.
Wait until the
engine has cooled.Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.
The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer checkand repair the cooling system.
Add coolant. (See TIP.)
Start the engine. If the engine overheats again, have a
Yamaha dealer check and repair the cooling system.
There is
leakage.
There is
no leakage.
WARNING
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Page 77 of 84

Dimensions:Overall length:2201 mm (86.7 in)
Overall width: 776 mm (30.6 in)
Overall height: 1337 mm (52.6 in)
Seat height: 792 mm (31.2 in)
Wheelbase: 1545 mm (60.8 in)
Ground clearance: 134 mm (5.30 in)
Minimum turning radius: 1805 mm (71.1 in)
Weight:With oil and fuel:177.4 kg (391 lb)
Engine:Engine type:Liquid cooled 4-stroke, SOHC
Cylinder arrangement: Forward-inclined single cylinder
Displacement: 249 cm
3
Bore x stroke:69.0 x 66.8 mm (2.72 x 2.63 in)
Compression ratio: 10.00 :1
Starting system: Electric starter
Lubrication system: Wet sump
Engine oil:Type:SAE 10W-30, SAE 10W-40, SAE 15W-40,
SAE 20W-40 or SAE 20W-50
Recommended engine oil grade: API service SF, SG type or higher, JASO
standard MA
Engine oil quantity:Periodic oil change: 1.30 L (1.37 US qt, 1.14 Imp.qt)
Final transmission oil:Type:SAE 10W-30 type SE motor oil
Quantity: 0.25 L (0.26 US qt, 0.22 Imp.qt)
Cooling system:Coolant reservoir capacity (up to the maxi-
mum level mark):0.25 L (0.26 US qt, 0.22 Imp.qt)
Radiator capacity (including all routes): 1.00 L (1.06 US qt, 0.88 Imp.qt)
Air filter:Air filter element:Oil-coated paper element
Fuel:Recommended fuel:Regular unleaded gasoline only
Fuel tank capacity: 11.8 L (3.12 US gal, 2.60 Imp.gal)
Fuel reserve amount: 1.7 L (0.45 US gal, 0.37 Imp.gal)
Throttle body:ID mark:1C04 00
Manufacturer: AISAN
Spark plug (s):Manufacturer/model:NGK/DPR8EA-9
Spark plug gap: 0.8–0.9 mm (0.031–0.035 in)
Clutch:Clutch type:Dry, centrifugal automatic
Transmission:Primary reduction system:Helical gear
Primary reduction ratio: 40/15 (2.666)
Secondary reduction system: Helical gear
Secondary reduction ratio: 40/14 (2.857)
Transmission type: V-belt automatic
-20 -10 0 10 20 30
40 50 ˚C
SAE 10W-30
SAE 15W-40
SAE 20W-40
SAE 20W-50
SAE 10W-40
SAE 10W-50
SPECIFICATIONS
8-1
8
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AAcceleration and deceleration ...................5-2
Air filter and V-belt case air filter elements ................................................6-15
Auxiliary light bulb, replacing ...................6-28
BBattery......................................................6-24
Brake fluid level, checking .......................6-20
Brake fluid, changing ...............................6-21
Brake lever, front ......................................3-12
Brake lever, rear .......................................3-12
Brake levers, lubricating ..........................6-21
Braking .......................................................5-3
CCare............................................................7-1
Catalytic converters .................................3-14
Centerstand and sidestand, checking and lubricating .......................................6-22
Coolant.....................................................6-13
Cowling and panel, removing and installing ...................................................6-8
DDimmer switch .........................................3-11
EEngine break-in ..........................................5-4
Engine oil .................................................6-10
Engine trouble warning light ......................3-4
FFinal transmission oil ...............................6-12
Front and rear brake lever free play.........6-18
Front and rear brake pads, checking ......6-19
Front fork, checking .................................6-23
Fuel ..........................................................3-13
Fuel consumption, tips for reducing ..........5-3 Fuel tank cap ...........................................3-12
Fuses, replacing .......................................6-25
HHandlebar switches .................................3-11
Hazard switch ..........................................3-11
Headlight bulb, replacing .........................6-26
High beam indicator light...........................3-4
Horn switch ..............................................3-11
IIdentification numbers ...............................9-1
Ignition circuit cut-off system ..................3-19
Immobilizer system ....................................3-1
Immobilizer system indicator light .............3-4
Indicator and warning lights ......................3-4
KKey identification number ..........................9-1
LLicense plate light bulb, replacing ...........6-28
MMain switch/steering lock ..........................3-2
Maintenance and lubrication, periodic ......6-4
Maintenance, emission control system .....6-3
Matte color, caution ...................................7-1
Model label ................................................9-2
Multi-function display ................................3-6
PParking .......................................................5-4
Part locations .............................................1-5
Pass switch ..............................................3-11
SSafe-riding points.......................................1-5
Safety information ......................................1-1
Seat ..........................................................3-15
Securing bracket ......................................3-15Shock absorber assemblies, adjusting....3-18
Sidestand .................................................3-18
Spark plug, checking .................................6-9
Specifications.............................................7-3
Speedometer .............................................3-5
Start switch ..............................................3-11
Starting off .................................................5-2
Starting the engine.....................................5-1
Steering, checking ...................................6-23
Storage.......................................................7-3
Storage compartments ............................3-16
TTachometer ................................................3-5
Tail/brake light bulb or rear turn signal
light bulb, replacing ...............................6-27
Throttle cable free play, checking ............6-16
Throttle grip and cable, checking and lubricating ..............................................6-21
Tires .........................................................6-16
Tool kit ........................................................6-2
Troubleshooting .......................................6-29
Troubleshooting charts ............................6-30
Turn signal indicator lights .........................3-4
Turn signal light bulb (front), replacing ................................................6-27
Turn signal switch ....................................3-11
VValve clearance ........................................6-16
Vehicle identification number .....................9-1
WWheel bearings, checking........................6-24
Wheels .....................................................6-18
INDEX
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