PERIODIC MAINTENANCE AND MINOR REPAIR
6-32
6 Engine overheating
WARNING
EWA10400
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, and then
slowly rotate the cap counterclockwise to the detent to allow any residual pressure to escape. When the hissingsound has stopped, press down on the cap while turning it counterclockwise, and then remove the cap.
NOTE:If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended coolantas 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 NOTE.)
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.
SPECIFICATIONS
8-1
8
Dimensions:Overall length:
2170 mm (85.4 in)
Overall width:
765 mm (30.1 in)
Overall height:
1465 mm (57.7 in)
Seat height:
805 mm (31.7 in)
Wheelbase:
1480 mm (58.3 in)
Ground clearance:
155 mm (6.10 in)
Minimum turning radius:
1706 mm (67.2 in)Weight:With oil and fuel:
174.0 kg (384 lb)Engine:Engine type:
Liquid cooled 4-stroke, SOHC
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
264.0 cm³ (16.11 cu.in)
Bore × stroke:
71.0 × 66.8 mm (2.80 × 2.63 in)
Compression ratio:
10.00 :1
Starting system:
Electric starter
Lubrication system:
Wet sump
Engine oil:Type:
SAE10W30 or SAE10W40 or SAE15W40
or SAE20W40 or SAE20W50
Recommended engine oil grade:
API service SE, SF, SG type or higher
Engine oil quantity:
Periodic oil change:
1.20 L (1.27 US qt) (1.06 Imp.qt)Final transmission oil:Type:
SAE10W30 type SE motor oil
Quantity:
0.25 L (0.26 US qt) (0.22 Imp.qt)Cooling system:Coolant reservoir capacity (up to the
maximum level mark):
0.40 L (0.42 US qt) (0.35 Imp.qt)
Radiator capacity (including all routes):
1.60 L (1.69 US qt) (1.41 Imp.qt)
Air filter:Air filter element:
Wet elementFuel:Recommended fuel:
Regular unleaded gasoline only
Fuel tank capacity:
10.9 L (2.88 US gal) (2.40 Imp.gal)
Fuel reserve amount:
1.9 L (0.50 US gal) (0.42 Imp.gal)Carburetor:Manufacturer:
TEIKEI
Type x quantity:
Y28V-1J x 1Spark plug(s):Manufacturer/model:
NGK/DR8EA
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)Clutch:Clutch type:
Dry, centrifugal automaticTransmission:Primary reduction system:
Helical gear
Primary reduction ratio:
40/15 (2.666)
Secondary reduction system:
Helical gear
Secondary reduction ratio:
37/12 (3.083)
Transmission type:
V-belt automatic
-20 -10 0
10 20 30
40
50 ˚C
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40
INDEX
AAcceleration and deceleration ................ 5-2
Air filter and V-belt case air filter
elements, cleaning ............................. 6-14
Anti-theft alarm (optional) ....................... 3-7
Anti-theft device housing ...................... 3-13
Auxiliary DC jack .................................. 3-17BBattery .................................................. 6-25
Battery voltage/coolant temperature
gauge ................................................... 3-3
Brake fluid, changing ............................ 6-21
Brake fluid level, checking .................... 6-20
Brake lever, front .................................... 3-8
Brake lever, rear ..................................... 3-9
Brake levers, lubricating ....................... 6-22
Braking ................................................... 5-2CCables, checking and lubricating .......... 6-22
Carburetor,adjusting ............................. 6-16
Care ........................................................ 7-1
Catalytic converter ................................ 3-11
Centerstand and sidestand, checking
and lubricating .................................... 6-23
Coolant ................................................. 6-13
Cowlings and panels, removing and
installing ............................................... 6-5DDimmer switch ........................................ 3-7
Display, multi-function ............................ 3-4EEngine break-in ...................................... 5-3
Engine oil .............................................. 6-10
Engine stop switch.................................. 3-8
FFinal transmission oil.............................6-12
Front and rear brake lever free play,
checking .............................................. 6-19
Front and rear brake pads, checking .... 6-20
Front fork, checking...............................6-23
Fuel ....................................................... 3-10
Fuel consumption, tips for reducing ........ 5-3
Fuel gauge .............................................. 3-3
Fuel tank cap........................................... 3-9
Fuses, replacing .................................... 6-26HHandlebar switches ................................. 3-7
Hazard switch.......................................... 3-8
Headlight bulb, replacing....................... 6-27
High beam indicator light......................... 3-2
Horn switch ............................................. 3-8IIdentification numbers ............................. 9-1
Ignition circuit cut-off system ................. 3-15
Indicator lights .........................................3-2KKey identification number ........................ 9-1LLicense plate light bulb, replacing ......... 6-30
Low beam indicator light ......................... 3-2
Luggage hook ....................................... 3-14MMain switch/steering lock ........................ 3-1
Model label .............................................. 9-2PParking ....................................................5-4
Part locations .......................................... 2-1
Pass switch ............................................. 3-7Periodic maintenance and lubrication
chart...................................................... 6-2
Pre-operation check list .......................... 4-2
SSafe-riding points .................................... 1-4
Safety information ................................... 1-1
Seat ...................................................... 3-11
Shock absorber assemblies,
adjusting ............................................. 3-14
Sidestand .............................................. 3-15
Spark plug, checking .............................. 6-9
Specifications.......................................... 8-1
Speedometer .......................................... 3-2
Starting off .............................................. 5-2
Starting the engine.................................. 5-1
Start switch ............................................. 3-8
Steering, checking ................................ 6-24
Storage ................................................... 7-3
Storage compartment .................. 3-12, 3-13TTail/brake light bulb or rear turn signal
light bulb, replacing............................. 6-29
Throttle cable free play, checking ......... 6-16
Throttle grip and cable, checking and
lubricating ........................................... 6-22
Tires ...................................................... 6-17
Tool kit .................................................... 6-1
Troubleshooting .................................... 6-30
Troubleshooting charts ......................... 6-31
Turn signal indicator lights ...................... 3-2
Turn signal light bulb (front),
replacing ............................................. 6-28
Turn signal switch ................................... 3-7