
 
MOTORCYCLE CARE AND STORAGE 
7-2 
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9contact with strong or abrasive
cleaning products, solvent or
thinner, fuel (gasoline), rust re-
movers or inhibitors, brake flu-
id, antifreeze or electrolyte.
 
 
Do not use high-pressure wash-
ers or steam-jet cleaners since
they cause water seepage and
deterioration in the following ar-
eas: seals (of wheel and swing-
arm bearings, fork and brakes),
electric components (couplers,
connectors, instruments,
switches and lights), breather
hoses and vents. 
 
For motorcycles equipped with
a windshield: Do not use strong
cleaners or hard sponges as
they will cause dulling or
scratching. Some cleaning com-
pounds for plastic may leave
scratches on the windshield.
Test the product on a small hid-
den part of the windshield to
make sure that it does not leave
any marks. If the windshield is
scratched, use a quality plastic
polishing compound after 
washing. 
After normal use
Remove dirt with warm water, a mild
detergent, and a soft, clean sponge,
and then rinse thoroughly with clean
water. Use a toothbrush or bottlebrush
for hard-to-reach areas. Stubborn dirt
and insects will come off more easily if
the area is covered with a wet cloth for
a few minutes before cleaning.
After riding in the rain or near the seaSince sea salt is extremely corrosive,
carry out the following steps after each
ride in the rain or near the sea.
1. Clean the motorcycle with cold wa-
ter and a mild detergent, after the
engine has cooled down.CAUTION:
 
 ECA10790 
Do not use warm water since it in-
creases the corrosive action of the 
salt. 
2. Apply a corrosion protection spray
on all metal, including chrome- and
nickel-plated, surfaces to prevent
corrosion. 
After cleaning  
1. Dry the motorcycle with a chamois
or an absorbing cloth.
2. Immediately dry the drive chain
and lubricate it to prevent it from
rusting.
3. Use a chrome polish to shine
chrome, aluminum and stain-
less-steel parts, including the ex-
haust system. (Even the thermally
induced discoloring of stain-
less-steel exhaust systems can be
removed through polishing.)
4. To prevent corrosion, it is recom-
mended to apply a corrosion pro-
tection spray on all metal,
including chrome- and nickel-plat-
ed, surfaces.
5. Use spray oil as a universal clean-
er to remove any remaining dirt.
6. Touch up minor paint damage
caused by stones, etc.
7. Wax all painted surfaces.
8. Let the motorcycle dry completely
before storing or covering it.
WARNING
 
EWA14500 
 
Make sure that there is no oil or 

 
MOTORCYCLE CARE AND STORAGE 
7-4 
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9 
install the spark plug and the
spark plug cap.
WARNING
 
EWA10950 
To prevent damage or injury from
sparking, make sure to ground the
spark plug electrodes while turning 
the engine over. 
6. Lubricate all control cables and the
pivoting points of all levers and
pedals as well as of the sidestand.
7. Check and, if necessary, correct
the tire air pressure, and then lift
the motorcycle so that both of its
wheels are off the ground. Alterna-
tively, turn the wheels a little every
month in order to prevent the tires
from becoming degraded in one
spot.
8. Cover the muffler outlet with a
plastic bag to prevent moisture
from entering it.
NOTE:
 
Make any necessary repairs before 
storing the motorcycle. 

 
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89
 
SPECIFICATIONS 
EAU2633K 
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) 
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: 
KickstarterLubrication 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: 
0.95 L (1.00 US qt) (0.84 Imp.qt) 
Transmission oil: 
Type: 
YAMALUBE 4 (10W30) or SAE 10W30
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 
Transmission: 
Primary reduction system: 
Helical gear
Primary reduction ratio: 
66/21 (3.143)
Secondary reduction system: 
Chain drive
Secondary reduction ratio: 
32/15 (2.133)
Transmission type: 
Constant mesh 3-speed
Operation: 
Left foot operation 
Gear ratio: 
1st: 
39/12 (3.250)
2nd: 
29/16 (1.812) 

 
SPECIFICATIONS 
8-2 
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3rd: 
22/17 (1.294) 
Chassis: 
Frame type: 
Steel tube backbone
Caster angle: 
26.00 °
Trail: 
62.0 mm (2.44 in) 
Front tire: 
Type: 
With tube
Size: 
2.50-14 4PR
Manufacturer/model: 
CHENG SHIN/KNOBBY 
Rear tire: 
Type: 
With tube
Size: 
3.00-12 4PR
Manufacturer/model: 
CHENG SHIN/KNOBBY 
Loading: 
Maximum rider weight: 
40.0 kg (88 lb)
Maximum load: 
40 kg (88 lb)
* (Total weight of rider, cargo and 
accessories) 
Tire air pressure (measured on cold
tires): 
Front: 
100 kPa (15 psi) (1.00 kgf/cm 
2
 
)
Rear: 
100 kPa (15 psi) (1.00 kgf/cm 
2
 
) 
Front wheel: 
Wheel type: 
Spoke wheel
Rim size: 
14x1.40 
Rear wheel: 
Wheel type: 
Spoke wheel
Rim size: 
12x1.60 
Front brake: 
Type: 
Drum brake
Operation: 
Right hand operation 
Rear brake: 
Type: 
Drum brake
Operation: 
Right foot operation 
Front suspension: 
Type: 
Telescopic fork
Spring/shock absorber type: 
Coil spring/oil damper
Wheel travel: 
110.0 mm (4.33 in) 
Rear suspension: 
Type: 
Swingarm (monocross)
Spring/shock absorber type: 
Coil spring/gas-oil damper
Wheel travel: 
95.0 mm (3.74 in) 
Electrical system: 
Ignition system: 
CDI 

 
INDEX 
A 
Accessories and replacement parts ........ 6-14
Air filter element, cleaning......................... 6-8
Autolube pump, adjusting ....................... 6-19 
B 
Brake and shift pedals, checking and 
lubricating ............................................. 6-20
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 ............................ 6-16 
C 
Cables, checking and lubricating ............ 6-19
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 ................................ 6-21
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 
L 
Labels, location of ......................................1-4 
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 ...........................................................3-6
Shifting .......................................................5-2
Shift pedal ..................................................3-1
Shock absorber..........................................3-7
Sidestand, checking and lubricating ........6-21
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 ...................................6-22
Storage ......................................................7-3
Supporting the motorcycle .......................6-23 
T 
Throttle cable free play, adjusting ............6-11Throttle grip and cable, checking and 
lubricating .............................................. 6-19
Tires ........................................................ 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) ............................................ 6-26
Wheels .................................................... 6-13