TABLE OF CONTENTS
SAFETY INFORMATION
................... 1-1
DESCRIPTION
................................... 2-1
Left view ........................................... 2-1
Right view ......................................... 2-2
Controls and instruments ................. 2-3
INSTRUMENT AND CONTROL
FUNCTIONS
........................................ 3-1
Handlebar switch ............................. 3-1
Power reduction plate ...................... 3-1
Shift pedal ....................................... 3-1
Brake lever ...................................... 3-2
Brake pedal ..................................... 3-2
Fuel tank cap ................................... 3-2
Fuel ................................................. 3-3
Fuel tank breather hose .................. 3-4
2-stroke engine oil ........................... 3-4
Fuel cock ......................................... 3-5
Starter (choke) lever “
1
” ................ 3-6
Kickstarter ....................................... 3-6
Seat ................................................. 3-7
Shock absorber assembly ............... 3-7
FOR YOUR SAFETY –
PRE-OPERATION CHECKS
............... 4-1
Pre-operation check list ................... 4-2
OPERATION AND IMPORTANT
RIDING POINTS
.................................. 5-1
Starting and warming up a cold
engine .......................................... 5-1
Starting a warm engine ................... 5-2
Shifting ............................................ 5-2
Engine break-in ............................... 5-3
Parking ............................................ 5-4
PERIODIC MAINTENANCE AND
ADJUSTMENT
.................................... 6-1
Owner’s tool kit ................................ 6-1
Periodic maintenance and lubrication
chart ............................................. 6-2
Checking the spark plug .................. 6-5
Removing the power reduction
plate ............................................. 6-6
Transmission oil .............................. 6-7
Cleaning the air filter element ......... 6-8
Cleaning the spark arrester ............. 6-9
Adjusting the carburetor ................ 6-10
Adjusting the engine idling
speed ......................................... 6-11
Adjusting the throttle cable free
play ............................................ 6-11
Tires .............................................. 6-12
Spoke wheels ................................ 6-13
Adjusting the brake lever free
play ............................................ 6-14
Adjusting the brake pedal free
play ............................................ 6-15Checking the front and rear brake
shoes ..........................................6-15
Drive chain slack ............................6-16
Cleaning and lubricating the drive
chain ...........................................6-18
Checking and lubricating the
cables .........................................6-18
Checking and lubricating the throttle
grip and cable .............................6-18
Adjusting the Autolube pump .........6-19
Checking and lubricating the brake
and shift pedals ..........................6-19
Checking and lubricating the brake
lever ............................................6-20
Checking and lubricating the
sidestand ....................................6-20
Checking the front fork ...................6-20
Checking the steering ....................6-21
Checking the wheel bearings .........6-22
Supporting the motorcycle .............6-22
Front wheel ....................................6-23
Rear wheel .....................................6-25
Troubleshooting .............................6-27
Troubleshooting chart ....................6-28
MOTORCYCLE CARE AND
STORAGE
...........................................7-1
Matte color caution ..........................7-1
Care .................................................7-1
Storage ............................................7-3
PERIODIC MAINTENANCE AND ADJUSTMENT
6-4
2
3
4
5
67
8
9
TIP
The air filter needs more frequent service if you are riding in unusually wet or dusty areas.
17 *Autolube pump
Check operation.Correct if necessary.Bleed.
18Transmission oilCheck for oil leakage .Correct if necessary.Change.
19 *Control cablesApply Yamaha chain and cable lube or
engine oil 10W-30 lightly.
20 *Throttle grip housing
and cableCheck operation and free play.Apply Yamaha chain and cable lube or
engine oil 10W-30 lightly.
21Brake lever pivot shaftApply lithium-soap-based grease lightly.
22Brake pedal pivot
shaftApply lithium-soap-based grease lightly.
23 *Cylinder head and
exhaust systemCheck for leakage.Tighten if necessary.Decarbonize if necessary.
24 *Spark arresterClean. NO. ITEM CHECK OR MAINTENANCE JOBINITIAL THEREAFTER EVERY
10
hours20
hours40
hours80
hours40
hours80
hours160
hours
PERIODIC MAINTENANCE AND ADJUSTMENT
6-8
2
3
4
5
67
8
9
NOTICE
ECA10452
In order to prevent clutch slip-
page (since the transmission oil
also lubricates the clutch), do
not mix any chemical additives.
Do not use oils with a diesel
specification of “CD” or oils of a
higher quality than specified. In
addition, do not use oils labeled
“ENERGY CONSERVING II” or
higher.
Make sure that no foreign mate-
rial enters the transmission.
5. Start the engine, and then let it idle
for several minutes while checking
the transmission for oil leakage. If
oil is leaking, immediately turn the
engine off and check for the cause.
EAU41162
Cleaning the air filter element
The air filter element should be cleaned
at the intervals specified in the periodic
maintenance and lubrication chart.
Clean the air filter element more fre-
quently if you are riding in unusually
wet or dusty areas.
1. Remove the air filter case cover by
removing the screws.
2. Pull the air filter element out.3. Remove the sponge material from
the air filter case cover, clean it
with solvent, and then squeeze the
remaining solvent out.
Recommended transmission oil:
See page 8-1.
Oil change quantity:
0.65 L (0.69 US qt, 0.57 Imp.qt)
1. Air filter case cover
2. Screw
2
2
1
1. Sponge material
2. Air filter case cover
1
2
PERIODIC MAINTENANCE AND ADJUSTMENT
6-9
1
2
3
4
5
6
7
8
9
4. Apply oil of the recommended type
to the entire surface of the sponge
material, and then squeeze the ex-
cess oil out.
TIP
The sponge material should be wet but
not dripping.
5. Install the sponge material onto
the air filter case cover.
6. Insert the air filter element into the
air filter case.
NOTICE:
Make sure
that the air filter element is prop-
erly seated in the air filter case.
The engine should never be op-erated without the air filter ele-
ment installed, otherwise the
piston(s) and/or cylinder(s) may
become excessively worn.
[ECA10481]
7. Install the air filter case cover by in-
stalling the screws.
EAU41231
Cleaning the spark arrester
The spark arrester should be cleaned
at the intervals specified in the periodic
maintenance and lubrication chart.
WARNING
EWA10980
Always let the exhaust system
cool prior to touching exhaust
components.
Do not start the engine when
cleaning the exhaust system.
TIP
Make sure to select a well-ventilated
area free of combustible materials to
clean the spark arrester.
1. Remove the tailpipe by removing
the bolt, and then pulling it out of
the muffler.
Recommended oil:
Yamaha foam air filter oil or other
quality foam air filter oil
8-1
1
2
3
4
5
6
7
8
9
SPECIFICATIONS
EAU2633P
Dimensions:
Overall length:
1540 mm (60.6 in)
Overall width:
640 mm (25.2 in)
Overall height:
880 mm (34.6 in)
Seat height:
635 mm (25.0 in)
Wheelbase:
1055 mm (41.5 in)
Ground clearance:
185 mm (7.28 in)
Minimum turning radius:
1700 mm (66.9 in)
Weight:
With oil and fuel:
61.0 kg (134 lb)
Noise and vibration level:
Noise level (77/311/EEC):
79.3 dB(A)
(AUT)(BEL)(CHE)(DEU)(DNK)(ESP)(FIN)
(FRA)(GBR)(GRC)(IRL)(NLD)(NOR)(PRT)
(SWE)(ZAF)
Vibration on seat (EN1032, ISO5008):
Will not exceed 0.5 m/s
2
(AUT)(BEL)(CHE)(DEU)(DNK)(ESP)(FIN)
(FRA)(GBR)(GRC)(IRL)(NLD)(NOR)(PRT)
(SWE)(ZAF)Vibration on handlebar (EN1032, ISO5008):
Will not exceed 2.5 m/s
2
(AUT)(BEL)(CHE)(DEU)(DNK)(ESP)(FIN)
(FRA)(GBR)(GRC)(IRL)(NLD)(NOR)(PRT)
(SWE)(ZAF)
Engine:
Engine type:
Air cooled 2-stroke
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
79.0 cm
3
Bore
×
stroke:
47.0
×
45.6 mm (1.85
×
1.80 in)
Compression ratio:
6.60 :1
Starting system:
Kickstarter
Lubrication system:
Separate lubrication (Yamaha autolube)
Engine oil:
Type:
YAMALUBE 2 or 2-stroke engine oil (JASO
FC grade) or (ISO EG-C or EG-D grade)
Engine oil quantity:
Quantity:
0.75 L (0.79 US qt, 0.66 Imp.qt)
Transmission oil:
Type:
YAMALUBE 4 (10W-40) or SAE 10W-40
Oil change quantity:
0.65 L (0.69 US qt, 0.57 Imp.qt)
Air filter:
Air filter element:
Wet element
Fuel:
Recommended fuel:
Regular unleaded gasoline only
(AUT)(BEL)(CHE)(DEU)(DNK)(ESP)(FIN)
(FRA)(GBR)(GRC)(IRL)(NLD)(NOR)(PRT)
(SWE)(ZAF)
Unleaded gasoline only (AUS)(NZL)
Fuel tank capacity:
4.9 L (1.29 US gal, 1.08 Imp.gal)
Fuel reserve amount:
1.0 L (0.26 US gal, 0.22 Imp.gal)
Carburetor:
Manufacturer:
MIKUNI
Type
×
quantity:
VM15SC x 1
Spark plug (s):
Manufacturer/model:
NGK/BP6HS (AUS)(NZL)
NGK/BPR6HS
(AUT)(BEL)(CHE)(DEU)(DNK)(ESP)(FIN)
(FRA)(GBR)(GRC)(IRL)(NLD)(NOR)(PRT)
(SWE)(ZAF)
Manufacturer/model:
DENSO/W20FP (AUS)(NZL)
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
Clutch:
Clutch type:
Wet, multiple-disc automatic
INDEX
A
Air filter element, cleaning .........................6-8
Autolube pump, adjusting ........................6-19
B
Brake and shift pedals, checking and
lubricating ..............................................6-19
Brake lever ................................................3-2
Brake lever, checking and lubricating ......6-20
Brake lever free play, adjusting ...............6-14
Brake pedal ...............................................3-2
Brake pedal free play, adjusting ..............6-15
Brake shoes, checking ............................6-15
C
Cables, checking and lubricating .............6-18
Carburetor, adjusting ...............................6-10
Care ...........................................................7-1
D
Drive chain, cleaning and lubricating .......6-18
Drive chain slack .....................................6-16
E
Engine break-in .........................................5-3
Engine idling speed .................................6-11
Engine oil ...................................................3-4
Engine, starting a warm .............................5-2
Engine stop switch.....................................3-1
F
Front fork, checking .................................6-20
Fuel ............................................................3-3
Fuel cock ...................................................3-5
Fuel tank breather hose.............................3-4
Fuel tank cap .............................................3-2
H
Handlebar switch .......................................3-1
I
Identification numbers ............................... 9-1
K
Kickstarter ................................................. 3-6
M
Matte color, caution ................................... 7-1
Model label ................................................ 9-1
P
Parking ...................................................... 5-4
Part locations............................................. 2-1
Periodic maintenance and lubrication
chart ........................................................ 6-2
Power reduction plate................................ 3-1
Power reduction plate, removing ............... 6-6
Pre-operation check list ............................. 4-2
S
Safety information ..................................... 1-1
Seat ........................................................... 3-7
Shifting ...................................................... 5-2
Shift pedal ................................................. 3-1
Shock absorber assembly ......................... 3-7
Sidestand, checking and lubricating ........ 6-20
Spark arrester, cleaning ............................ 6-9
Spark plug, checking ................................. 6-5
Specifications ............................................ 8-1
Starter (choke) lever .................................. 3-6
Starting and warming up a cold engine ..... 5-1
Steering, checking ................................... 6-21
Storage ...................................................... 7-3
Supporting the motorcycle....................... 6-22
T
Throttle cable free play, adjusting ........... 6-11
Throttle grip and cable, checking and
lubricating .............................................. 6-18Tires ........................................................ 6-12
Tool kit....................................................... 6-1
Transmission oil ........................................ 6-7
Troubleshooting ...................................... 6-27
Troubleshooting chart ............................. 6-28
V
Vehicle identification number .................... 9-1
W
Wheel bearings, checking ....................... 6-22
Wheel (front) ........................................... 6-23
Wheel (rear) ............................................ 6-25
Wheels .................................................... 6-13