Page 16 of 104

3-1
OFFON
LOCKP
PUSH
YM-8
IGNITION
ON
OFF
LOCK
PARKING
EAU00029
Main switch/Steering lock
The main switch controls the ignition
and lighting systems. Its operation is
described below.
EAU00036
ON
Electrical circuits are switched on.
The engine can be started. The key
cannot be removed in this position.
EAU00038
OFF
All electrical circuits are switched off.
The key can be removed in this posi-
tion.
EAU00042
LOCK
The steering is locked in this position
and all electrical circuits are switched
off.
The key can be removed in this posi-
tion.
To lock the steering, turn the handle-
bars all the way to the left. With the
key at “OFF”, push it into the main
switch and release it, turn it counter-
clockwise to “LOCK” and remove it.
To release the lock, turn the key to
“OFF”.
EW000016
w
Never turn the key to “OFF” or
“LOCK” when the motorcycle is
moving. The electrical circuits will
be switched off which may result
in loss of control or an accident.
Be sure the motorcycle is stopped
before turning the key to “OFF” or
“LOCK”.
EAU00048*
. .(Parking)
The steering is locked in this position,
and the taillight and auxiliary light
come on but all other circuits are off.
The key can be removed in this posi-
tion.
To use the parking position, first lock
the steering, then turn the key to “
.”.
Do not use this position for an
extended length of time as the bat-
tery may discharge.
EAU00027
INSTRUMENT AND CONTROL FUNCTIONS
1
2
3
4
5
6
7
8
9
12
1. Push 2. Turn
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Page 23 of 104
3-8
1
EAU00152Clutch lever
The clutch lever is located on the left
handlebar, and the ignition circuit cut-
off system is incorporated in the
clutch lever holder. Pull the clutch
lever to the handlebar to disengage
the clutch, and release the lever to
engage the clutch. The lever should
be pulled rapidly and released slowly
for smooth clutch operation. (Refer to
the engine starting procedures for a
description of the ignition circuit cut-
off system.)
EAU00158Front brake lever
The front brake lever is located on
the right handlebar. Pull it toward the
handlebar to apply the front brake.
1. Front brake lever
INSTRUMENT AND CONTROL FUNCTIONS
1
2
3
4
5
6
7
8
9
1
1. Clutch lever
6
5
4
3
2
1 N1
EAU00157Shift pedal
This motorcycle is equipped with a
constant-mesh 6-speed transmission.
The shift pedal is located on the left
side of the engine and is used in
combination with the clutch when
shifting.
1. Shift pedal
N. Neutral
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5-1
EAU00373
w
8 8
Before riding this motorcycle,
become thoroughly familiar
with all operating controls and
their functions. Consult a
Yamaha dealer regarding any
control or function that you do
not thoroughly understand.
8 8
Never start your engine or let
it run for any length of time in
a closed area. The exhaust
fumes are poisonous and can
cause loss of consciousness
and death within a short time.
Always operate your motorcy-
cle in an area with adequate
ventilation.
8 8
Before starting out, always be
sure the sidestand is up.
Failure to retract the sidestand
completely can result in a seri-
ous accident when you try to
turn a corner.
EAU00381Starting the engine
NOTE:
This motorcycle is equipped with an
ignition circuit cut-off system. The
engine can be started only under the
following conditions:
8 8
The transmission is in neutral.
8 8
The sidestand is up, the trans-
mission is in gear and the clutch
is disengaged
The motorcycle must not be ridden
when the sidestand is down.
EW000054
w
Before going through the following
steps, check the function of the
sidestand switch and clutch
switch. (Refer to page 3-17.)
EAU00372
OPERATION AND IMPORTANT RIDING POINTS
1
2
3
4
5
6
7
8
9
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5-6
EAU00453
0 ~ 500 km
Avoid operation above 6,000 r/min.
Stop the engine and let it cool for 5 to
10 minutes after every hour of opera-
tion. Vary the speed of the motorcy-
cle from time to time. Do not operate
it at one set throttle position.
500 ~ 1,000 km
Avoid prolonged operation above
7,000 r/min. Rev the motorcycle
freely through the gears, but do not
use full throttle at any time.
EC000060
cC
After 1,000 km of operation, be
sure to replace the transmission
oil.
1,000 km and beyond
Full throttle can be used.
EC000053
cC
8
8
Never let engine speeds enter
the red zone.
8 8
If any engine trouble should
occur during the break-in peri-
od, consult a Yamaha dealer
immediately.
EAU00458
Parking
When parking the motorcycle, stop
the engine and remove the ignition
key. Turn the fuel cock to “OFF”
whenever stopping the engine.
EW000058
w
The exhaust system is hot. Park
the motorcycle in a place where
pedestrians or children are not
likely to touch the motorcycle. Do
not park the motorcycle on a slope
or soft ground; the motorcycle
may overturn.
EC000062
cC
Never park this motorcycle in an
area that would cause a fire hazard
such as grass or other materials
that may easily burn.
OPERATION AND IMPORTANT RIDING POINTS
1
2
3
4
5
6
7
8
9
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6-36
PERIODIC MAINTENANCE AND MINOR REPAIR
1
2
3
4
5
6
7
8
9 4. Adjust the drive chain. (See page
6-24 for adjusting the drive chain
slack.)
5. Tighten the axle nut to the speci-
fied torque.
Tightening torque:
Axle nut:
104 Nm (10.4 m0kg)
EAU01008Troubleshooting
Although Yamaha motorcycles
receive a rigid inspection before ship-
ment from the factory, trouble may
occur during operation.
Any problem in the fuel, compres-
sion, or ignition systems can cause
poor starting and loss of power. The
troubleshooting chart describes a
quick, easy procedure for making
checks.
If your motorcycle requires any
repair, bring it to a Yamaha dealer.
The skilled technicians at a Yamaha
dealership have the tools, experi-
ence, and know-how to properly ser-
vice your motorcycle. Use only gen-
uine Yamaha parts on your
motorcycle. Imitation parts may look
like Yamaha parts, but they are often
inferior. Consequently, they have a
shorter service life and can lead to
expensive repair bills.
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6-37
PERIODIC MAINTENANCE AND MINOR REPAIR
1
2
3
4
5
6
7
8
9
EAU01581Troubleshooting chartEW000125
w
Never check the fuel system while smoking or in the vicinity of an open flame.
1. Fuel
2. Compression
3. Ignition
4. Battery
Use electric starter.
Remove spark
There is compression.
Go to ignition check.
No compression.
Ask a Yamaha dealer to inspect.
Wet.
Dry.Wipe clean with dry cloth and correct
Open throttle half-way and start
Ask a Yamaha dealer to inspect.
Check if there is fuel
Enough fuel.
No fuel.Go to compression check.
Supply fuel.
in the fuel tank.
electrodes. plug and check
Engine doesn’t start, go to battery
check. the engine. spark gap or replace spark plug.
Engine turns over
Engine turns overBattery good.
Check connections or
quickly.
slowly. recharge.Engine doesn’t start, ask aYamaha dealer to inspect.
Engine doesn’t start, go to compression check.
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Page 94 of 104
SPECIFICATIONS
1
2
3
4
5
6
7
8
9
Wheels
Front
Type Cast wheel
Size 18 ´MT2.15
Rear
Type Cast wheel
Size 17 ´MT2.50
Brakes
Front
Type Single disc brake
Operation Right hand operation
Fluid DOT 3 or DOT 4
Rear
Type Single disc brake
Operation Right foot operation
Fluid DOT 4
Suspension
Front
Type Telescopic fork
Rear
Type Swingarm (Monocross)Shock absorber
Front
Type Coil spring/oil damper
Rear
Type Coil-gas spring/oil damper
Wheel travel
Front 180 mm
Rear 180 mm
Electrical
Ignition system C.D.I.
Charging system
Type C.D.I. magneto
Standard output 14 V, 12A @5,000 r/min
Battery
Type YTX5L-BS
Voltage, capacity 12 V, 4 AH
Headlight bulb typeHalogen bulb
Bulb voltage, wattage ´quantity
Headlight 12 V, 60/55W ´2
12 V, 35/35W ´2 (GB, IRL only)
8-3
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