Periodic maintenance an d a djustment
7-17
7
EAU21944
Spoke wheels
WARNING
EWA10611
The wheels on this mo del are not
d esi gne d for use with tu beless tires.
Do not attempt to use tu beless tires
on this mo del.
To maximize the performance, durabil-
ity, and safe operation of your motor-
cycle, note the following points
regarding the specified wheels.
The wheel rims should be
checked for cracks, bends, warp-
age or other damage, and the
spokes for looseness or damage
before each ride. If any damage is
found, have a Yamaha dealer re-
place the wheel. Do not attempt
even the smallest repair to the
wheel. A deformed or cracked
wheel must be replaced.
The wheel should be balanced
whenever either the tire or wheel
has been changed or replaced. An
unbalanced wheel can result in
poor performance, adverse han-
dling characteristics, and a short-
ened tire life.
EAU44664
Adjustin g the clutch free play
The clutch free play must be checked
and, if necessary, adjusted as follows
at the intervals specified in the periodic
maintenance and lubrication chart.
1. Loosen the locknut.
2. Slowly turn the clutch adjusting screw in direction (a) until resis-
tance is felt, and then turn it 1/8
turn in direction (b).
3. Tighten the locknut to the speci- fied torque.
TIP
When tightening the locknut, hold the
clutch adjusting screw with a screw-
driver so that it does not turn together
with the locknut.
1. Locknut
2. Clutch adjusting screw
Tightening torque:
Locknut:
8 Nm (0.8 m·kgf, 5.8 ft·lbf)
1 2
(a)(b)
UB5181E0.book Page 17 Monday, April 6, 2015 9:22 AM
Motorcycle care and stora ge
8-3
8 3. Use a chrome polish to shine
chrome, aluminum and stainless-
steel parts, including the exhaust
system. (Even the thermally in-
duced discoloring of stainless-
steel exhaust systems can be re-
moved 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
EWA14502
Contaminants on the brakes or tires
can cause loss of control. Make sure that there is no oil or
wax on the tires.
If necessary, wash the tires with
warm water and a mild d eter-
g ent. Before ri din g at hi gher
speed s, test the motorcycle’s
b rakin g performance an d cor-
nerin g b ehavior.
NOTICE
ECA10801
Apply spray oil an d wax spar-
in gly an d make sure to wipe off
any excess.
Never apply oil or wax to any
rubber an d plastic parts, but
treat them with a suita ble care
prod uct.
Avoi d using abrasive polishin g
compoun ds as they will wear
away the paint.
TIP
Consult a Yamaha dealer for advice on
what products to use.
UB5181E0.book Page 3 Monday, April 6, 2015 9:22 AM
Motorcycle care and stora ge
8-4
8
EAU26153
Stora ge
Short-term
Always store your motorcycle in a cool,
dry place and, if necessary, protect it
against dust with a porous cover. Be
sure the engine and the exhaust sys-
tem are cool before covering the mo-
torcycle.
NOTICE
ECA10811
Storin g the motorcycle in a
poorly ventilated room or cover-
in g it with a tarp, while it is still
wet, will allow water an d humi d-
ity to seep in an d cause rust.
To prevent corrosion, avoi d
d amp cellars, sta bles ( because
of the presence of ammonia)
an d areas where stron g chemi-
cals are store d.
Lon g-term
Before storing your motorcycle for sev-
eral months: 1. Follow all the instructions in the “Care” section of this chapter.
2. For motorcycles equipped with a fuel cock that has an “OFF” posi-
tion: Turn the fuel cock lever to
“OFF”.
3. Drain the carburetor float chamber by loosening the drain bolt; this
will prevent fuel deposits from
building up. Pour the drained fuel
into the fuel tank.
4. Fill up the fuel tank and add fuel stabilizer (if available) to prevent
the fuel tank from rusting and the
fuel from deteriorating. 5. Perform the following steps to
protect the cylinder, piston rings,
etc. from corrosion.a. Remove the spark plug cap and spark plug.
b. Pour a teaspoonful of engine oil into the spark plug bore.
c. Install the spark plug cap onto the spark plug, and then place
the spark plug on the cylinder
head so that the electrodes are
grounded. (This will limit spark-
ing during the next step.)
d. Turn the engine over several times with the starter. (This will
coat the cylinder wall with oil.)
WARNING! To prevent d am-
a g e or injury from sparkin g,
make sure to groun d the
spark plu g electro des while
turnin g the en gine over.
[EWA10952]
e. Remove the spark plug cap
from the spark plug, and then
install the spark plug and the
spark plug cap.
6. Lubricate all control cables and the pivoting points of all levers and
pedals as well as of the side-
stand/centerstand.
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.
UB5181E0.book Page 4 Monday, April 6, 2015 9:22 AM
Specifications
9-2
9
Transmission type:Constant mesh 4-speed
Operation: Left foot operation
Gear ratio:
1st:3.166 (38/12)
2nd:
1.941 (33/17)
3rd: 1.380 (29/21)
4th: 1.095 (23/21)
Chassis:
Frame type:
Backbone
Caster angle: 26.00 °
Trail: 60 mm (2.4 in)
Front tire:
Type:With tube
Size: 2.50-14 4PR
Manufacturer/model:
CHEN SHIN/C-803-2
Speed rating: 120 km/h (75 mph)
Rear tire:
Type:
With tube
Size: 3.00-12 4PR
Manufacturer/model: CHEN SHIN/C-803-2
Speed rating:
120 km/h (75 mph)
Loa din g:
Maximum rider weight:
60.0 kg (132 lb)
Tire air pressure (measure d on col d
tires):
Front:
100 kPa (1.00 kgf/cm², 15 psi)
Rear:
100 kPa (1.00 kgf/cm², 15 psi)
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: 115 mm (4.5 in)
Rear suspension:
Type:
Swingarm
Spring/shock absorber type: Coil spring/gas-oil damper
Wheel travel: 110 mm (4.3 in)
Electrical system:
System voltage:12 V
Ignition system: DC CDI
Charging system:
AC magneto
Battery:
Model:GT4B-5
Voltage, capacity:
12 V, 2.5 Ah
Fuse:
Fuse:10.0 A
UB5181E0.book Page 2 Monday, April 6, 2015 9:22 AM
11-1
11
Index
A
Air filter element, cleaning .................... 7-10
B
Battery .................................................. 7-27
Brake lever .............................................. 4-2
Brake lever, checking and
lubricating ........................................... 7-23
Brake lever free play, adjusting ............ 7-18
Brake pedal............................................. 4-3
Brake pedal, checking and lubricating ........................................... 7-24
Brake pedal free play, adjusting ........... 7-19
Brake shoes, checking ......................... 7-20
C
Cables, checking and lubricating ......... 7-22
Carburetor, adjusting ............................ 7-13
Care ........................................................ 8-1
Clutch free play, adjusting .................... 7-17
D
Drive chain, cleaning and lubricating .... 7-22
Drive chain slack................................... 7-20
E
Engine break-in....................................... 6-3
Engine idling speed .............................. 7-13
Engine oil ................................................ 7-8
Engine serial number ............................ 10-1
Engine, starting a warm .......................... 6-2
Engine stop switch ................................. 4-1
F
Front fork, checking .............................. 7-25
Fuel ......................................................... 4-4
Fuel cock ................................................ 4-7
Fuel tank breather hose .......................... 4-6
Fuel tank cap .......................................... 4-3
Fuse, replacing ..................................... 7-28
H
Handlebar switches ................................ 4-1
I
Identification numbers .......................... 10-1
K
Kickstarter............................................... 4-8
L
Labels, location....................................... 1-1
M
Main switch ............................................. 4-1
Maintenance and lubrication, periodic ... 7-4
Maintenance, emission control
system .................................................. 7-3
Matte color, caution ................................ 8-1
Model label ........................................... 10-1
P
Panels, removing and installing.............. 7-6
Parking ................................................... 6-4
Part locations ......................................... 3-1
S
Safety information .................................. 2-1
Seat ........................................................ 4-9
Shifting ................................................... 6-2
Shift pedal .............................................. 4-2
Shift pedal, checking ............................ 7-19
Shock absorber assembly ...................... 4-9
Sidestand ............................................. 4-10
Sidestand, checking and lubricating .... 7-24
Spark arrester, cleaning ....................... 7-12
Spark plug, checking ............................. 7-7
Specifications ......................................... 9-1
Starter (choke) lever ............................... 4-8
Starting and warming up a cold engine .................................................. 6-1
Starting circuit cut-off system .............. 4-10
Start switch ............................................ 4-1
Steering, checking................................ 7-26
Storage ................................................... 8-4
Supporting the motorcycle................... 7-29
Swingarm pivots, lubricating ................ 7-25
T
Throttle grip and cable, checking and lubricating .......................................... 7-23
Throttle grip free play, checking........... 7-14
Tires ...................................................... 7-15
Tool kit.................................................... 7-2
Troubleshooting ................................... 7-33
Troubleshooting chart .......................... 7-34
V
Valve clearance .................................... 7-15
Vehicle Emission Control Information label (For Canada) .............................. 10-2
Vehicle identification number ............... 10-1
W
Wheel bearings, checking .................... 7-26
Wheel (front) ......................................... 7-29
Wheel (rear) .......................................... 7-31
Wheels .................................................. 7-17
UB5181E0.book Page 1 Monday, April 6, 2015 9:22 AM