8-53
1
2
3
4
5
6
78
9
10
11
Engine overheating
WARNING
EWB02290
Wait for the engine and radiator to cool before removing the radiator cap. You could be burned by
hot fluid and steam blown out under pressure. Always put a thick rag over the cap when opening.
Allow any remaining pressure to escape before completely removing the cap.
TIP
If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the rec-
ommended 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 check
and 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.
10-2
1
2
3
4
5
6
7
8
910
11
Cooling system:
Coolant reservoir capacity (up to the maximum level mark):
0.28 L (0.30 US qt, 0.25 Imp.qt)
Radiator capacity (including all routes):
1.50 L (1.59 US qt, 1.32 Imp.qt)
Air filter:
Air filter element:
Wet element
Fuel:
Recommended fuel:
Premium unleaded gasoline only
Fuel tank capacity:
12.0 L (3.17 US gal, 2.64 Imp.gal)
Fuel reserve amount:
2.5 L (0.66 US gal, 0.55 Imp.gal)
Carburetor:
Manufacturer:
MIKUNI
Type
×
quantity:
VM26SS x 2
Spark plug (s):
Manufacturer/model:
NGK/BR8ES
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)
Clutch:
Clutch type:
Wet, multiple-disc
Transmission:
Primary reduction system:
Helical gearPrimary reduction ratio:
66/23 (2.869)
Secondary reduction system:
Chain drive
Secondary reduction ratio:
41/14 (2.929)
Transmission type:
Constant mesh 6-speed
Operation:
Left foot operation
1st:
32/13 (2.461)
2nd:
29/16 (1.812)
3rd:
27/18 (1.500)
4th:
25/20 (1.250)
5th:
23/22 (1.045)
6th:
21/24 (0.875)
Chassis:
Frame type:
Steel tube frame
Caster angle:
9.0 °
Trail:
40.0 mm (1.57 in)
Front tire:
Type:
Tubeless
INDEX
A
Accessories and loading ................................................ 6-6
Air filter element, cleaning ............................................ 8-17
B
Brake and clutch levers, checking and lubricating ....... 8-43
Brake fluid, changing.................................................... 8-35
Brake fluid level, checking............................................ 8-33
Brake lever ..................................................................... 4-5
Brake lever free play, checking the front ...................... 8-35
Brake light switches ..................................................... 8-38
Brake pads, checking the front and rear ...................... 8-32
Brake pedal .................................................................... 4-5
Brake pedal, checking and lubricating ......................... 8-43
Brake pedal position, checking .................................... 8-36
Brakes, front and rear .................................................... 5-3
C
Cables, checking and lubricating ................................. 8-43
Carburetor settings, changing ...................................... 8-22
Chassis fasteners........................................................... 5-7
Cleaning ......................................................................... 9-1
Clutch lever .................................................................... 4-4
Clutch lever free play, adjusting ................................... 8-39
Coolant ................................................................. 5-3
,
8-12
D
Drive chain ..................................................................... 5-4
Drive chain, lubricating ................................................. 8-42Drive chain slack .......................................................... 8-40
E
Engine break-in .............................................................. 6-4
Engine, cold start ........................................................... 6-1
Engine idling speed ...................................................... 8-30
Engine, starting a warm ................................................. 6-2
Engine stop switch ......................................................... 4-2
F
Fuel ................................................................................ 4-8
Fuel and 2-stroke engine oil mixing ratio ....................... 5-3
Fuel cock ........................................................................ 4-9
Fuel tank cap.................................................................. 4-7
H
Handlebar switches ........................................................ 4-2
Headlight beam, adjusting............................................ 8-48
Headlight bulb, replacing.............................................. 8-45
I
Identification numbers .................................................. 11-1
Instruments, lights and switches .................................... 5-7
K
Key identification number ............................................. 11-1
Kickstarter ...................................................................... 4-7
L
Label locations ............................................................... 2-1
Light switch .................................................................... 4-2
