Congratulations on your purchase of the Yamaha DT230. This model is the result of Yamaha’s vast
experience in the production of fine sporting, touring, and pacesetting racing machines. It represents
the high degree of craftsmanship and reliability that have made Yamaha a leader in these fields.
This manual will give you an understanding of the operation, inspection, and basic maintenance of
this motorcycle. If you have any questions concerning the operation or maintenance of your motorcycle, please consult a Yamaha dealer.
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IMPORTANT MANUAL INFORMATION
Particularly important information is distinguished in this manual by the following notations:
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NOTE:
NOTE:
8 This manual should be considered a permanent part of this motorcycle and should remain
8 Yamaha continually seeks advancements in product design and quality. Therefore, while this
The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS
INVOLVED!
Failure to follow WARNING instructions could result in severe injury or death to the
motorcycle operator, a bystander, or a person inspecting or repairing the motorcycle.
A CAUTION indicates special precautions that must be taken to avoid damage to
the motorcycle.
A NOTE provides key information to make procedures easier or clearer.
with it even if the motorcycle is subsequently sold.
manual contains the most current product information available at the time of printing, there
may be minor discrepancies between your motorcycle and this manual. If you have any questions concerning this manual, please consult your Yamaha dealer.
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IMPORTANT MANUAL INFORMATION
EW000002
PLEASE READ THIS MANUAL CAREFULLY AND COMPLETELY BEFORE OPERATING
THIS MOTORCYCLE.
MOTORCYCLES ARE SINGLE TRACK VEHICLES. THEIR SAFE USE AND OPERATION ARE
DEPENDENT UPON THE USE OF PROPER RIDING TECHNIQUES AS WELL AS THE EXPER-
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TISE OF THE OPERATOR. EVERY OPERATOR SHOULD KNOW THE FOLLOWING REQUIREMENTS BEFORE RIDING THIS MOTORCYCLE.
HE OR SHE SHOULD:
1. OBTAIN THOROUGH INSTRUCTIONS FROM A COMPETENT SOURCE ON ALL ASPECTS
OF MOTORCYCLE OPERATION.
2. OBSERVE THE WARNINGS AND MAINTENANCE REQUIREMENTS IN THE OWNER’S MANUAL.
3. OBTAIN QUALIFIED TRAINING IN SAFE AND PROPER RIDING TECHNIQUES.
4. OBTAIN PROFESSIONAL TECHNICAL SERVICE AS INDICATED BY THE OWNER’S MANUAL
AND/OR WHEN MADE NECESSARY BY MECHANICAL CONDITIONS.
Safe riding
1. Always make pre-operation checks. Careful checks may help prevent an accident.
2. This motorcycle is designed to carry the operator and a passenger.
3. The failure of motorists to detect and recognize motorcycles in traffic is the predominating cause
of automobile/motorcycle accidents. Many accidents have been caused by an automobile driver
who did not see the motorcycle. Making yourself conspicuous appears to be very effective in
reducing the chance of this type of accident.
Therefore:
a. Wear a brightly colored jacket.
b. Use extra caution when approaching and passing through intersections, since intersections
are the most likely places for motorcycle accidents to occur.
c. Ride where other motorists can see you. Avoid riding in another motorist’s blind spot.
EAU00017
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Q SAFETY INFORMATION
4. Many accidents involve inexperienced operators. In fact, many operators who have been
involved in accidents do not even have a current motorcycle license.
a. Make sure that you are qualified and that you only lend your motorcycle to other qualified oper-
ators.
b. Know your skills and limits. Staying within your limits may help you to avoid an accident.
c. We recommend that you practice riding your motorcycle where there is no traffic until you have
become thoroughly familiar with the motorcycle and all of its controls.
5. Many accidents have been caused by error of the motorcycle operator. A typical error made by
the operator is veering wide on a turn due to EXCESSIVE SPEED or undercornering (insufficient
lean angle for the speed).
a. Always obey the speed limit and never travel faster than warranted by road and traffic condi-
tions.
b. Always signal before turning or changing lanes. Make sure that other motorists can see you.
6. The posture of the operator and passenger is important for proper control.
a. The operator should keep both hands on the handlebar and both feet on the operator footrests
during operation to maintain control of the motorcycle.
b. The passenger should always hold onto the operator, the seat strap or grab bar, if equipped,
with both hands and keep both feet on the passenger footrests.
c. Never carry a passenger unless he or she can firmly place both feet on the passenger
footrests.
7. Never ride under the influence of alcohol or other drugs.
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Q SAFETY INFORMATION
Protective apparel
The majority of fatalities from motorcycle accidents are the result of head injuries. The use of a safety
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helmet is the single most critical factor in the prevention or reduction of head injuries.
1. Always wear an approved helmet.
2. Wear a face shield or goggles. Wind in your unprotected eyes could contribute to an impairment
of vision that could delay seeing a hazard.
3. The use of a jacket, heavy boots, trousers, gloves, etc., is effective in preventing or reducing
abrasions or lacerations.
4. Never wear loose-fitting clothes, otherwise they could catch on the control levers, footrests, or
wheels and cause injury or an accident.
5. Never touch the engine or exhaust system during or after operation. They become very hot and
can cause burns. Always wear protective clothing that covers your legs, ankles, and feet.
6. Passengers should also observe the precautions mentioned above.
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Modifications
Modifications made to this motorcycle not approved by Yamaha, or the removal of original equipment,
may render the motorcycle unsafe for use and may cause severe personal injury. Modifications may
also make your motorcycle illegal to use.
Loading and accessories
Adding accessories or cargo to your motorcycle can adversely affect stability and handling if the
weight distribution of the motorcycle is changed. To avoid the possibility of an accident, use extreme
caution when adding cargo or accessories to your motorcycle. Use extra care when riding a motorcycle that has added cargo or accessories. Here are some general guidelines to follow if loading cargo
or adding accessories to your motorcycle:
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Q SAFETY INFORMATION
Loading
The total weight of the operator, passenger, accessories and cargo must not exceed the maximum
load limit of 180 kg. When loading within this weight limit, keep the following in mind:
1. Cargo and accessory weight should be kept as low and close to the motorcycle as possible.
Make sure to distribute the weight as evenly as possible on both sides of the motorcycle to minimize imbalance or instability.
2. Shifting weights can create a sudden imbalance. Make sure that accessories and cargo are
securely attached to the motorcycle before riding. Check accessory mounts and cargo restraints
frequently.
3. Never attach any large or heavy items to the handlebar, front fork, or front fender. These items,
including such cargo as sleeping bags, duffel bags, or tents, can create unstable handling or a
slow steering response.
Accessories
Genuine Yamaha accessories have been specifically designed for use on this motorcycle. Since
Yamaha cannot test all other accessories that may be available, you must personally be responsible
for the proper selection, installation and use of non-Yamaha accessories. Use extreme caution when
selecting and installing any accessories.
Keep the following guidelines in mind, as well as those provided under “Loading” when mounting
accessories.
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Q SAFETY INFORMATION
1. Never install accessories or carry cargo that would impair the performance of your motorcycle.
Carefully inspect the accessory before using it to make sure that it does not in any way reduce
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ground clearance or cornering clearance, limit suspension travel, steering travel or control operation, or obscure lights or reflectors.
a. Accessories fitted to the handlebar or the front fork area can create instability due to improper
weight distribution or aerodynamic changes. If accessories are added to the handlebar or front
fork area, they must be as lightweight as possible and should be kept to a minimum.
b. Bulky or large accessories may seriously affect the stability of the motorcycle due to aerody-
namic effects. Wind may attempt to lift the motorcycle, or the motorcycle may become unstable
in cross winds. These accessories may also cause instability when passing or being passed by
large vehicles.
c. Certain accessories can displace the operator from his or her normal riding position. This
improper position limits the freedom of movement of the operator and may limit control ability,
therefore, such accessories are not recommended.
2. Use caution when adding electrical accessories. If electrical accessories exceed the capacity of
the motorcycle’s electrical system an electric failure could result, which could cause a dangerous
loss of lights or engine power.
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Gasoline and exhaust gas
1. GASOLINE IS HIGHLY FLAMMABLE:
a. Always turn the engine off when refueling.
b. Take care not to spill any gasoline on the engine or exhaust system when refueling.
c. Never refuel while smoking or in the vicinity of an open flame.
1-5
Q SAFETY INFORMATION
2. Never start the engine or let it run for any length of time in a closed area. The exhaust fumes are
poisonous and may cause loss of consciousness and death within a short time. Always operate
your motorcycle in an area that has adequate ventilation.
3. Always turn the engine off before leaving the motorcycle unattended and remove the key from
the main switch. When parking the motorcycle, note the following:
a. The engine and exhaust system may be hot, therefore, park the motorcycle in a place where
pedestrians or children are not likely to touch these hot areas.
b. Do not park the motorcycle on a slope or soft ground, otherwise it may fall over.
c. Do not park the motorcycle near a flammable source (e.g., a kerosene heater, or near an open
flame), otherwise it could catch fire.
4. When transporting the motorcycle in another vehicle, make sure that it is kept upright and that the
fuel cock(s) are turned to “ON” or “RES” (for vacuum type)/”OFF” (for manual type). If the motorcycle should lean over, gasoline may leak out of the carburetor or fuel tank.
5. If you should swallow any gasoline, inhale a lot of gasoline vapor, or allow gasoline to get into
your eyes, see your doctor immediately. If any gasoline spills on your skin or clothing, immediately wash the affected area with soap and water and change your clothes.
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WARNING
Before you operate this vehicle,
read the owner’s manual.
English
3HP-21568-00
4AA-22259-40
Location of important labels
Please read the following important labels carefully before operating this motorcycle.
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1-7
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DESCRIPTION
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Left view
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EAU00026
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1. Headlight(page 6-34)
2. Rear shock absorber compression
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damping adjusting knob(page 3-14)
3. Fuel cock(page 3-9)
4. Starter (choke) lever “1”(page 3-10)
5. Air filter element(page 6-14)
6. 2-stroke engine oil tank(page 3-8)
7. Helmet holder(page 3-11)
8. Rear shock absorber spring preload
adjusting nut(page 3-13)
12. Front fork compression damping
adjusting screw(page 3-12)
2-1
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1415 1617
18
Right view
DESCRIPTION
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2
3
4
13. Coolant reservoir (page 6-11)
14. Owner’s tool kit(page 6-1)
15. Battery(page 6-32)
16. Fuse(page 6-33)
17. Radiator cap(page 6-12)
18. Brake pedal(page 3-7, 6-22)
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2-2
DESCRIPTION
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Controls and instruments
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1. Clutch lever(page 3-6, 6-20)
2. Left handlebar switches(page 3-5)
3. Speedometer unit(page 3-3)
4. Main switch/steering lock(page 3-1)
5. Right handlebar switches(page 3-5)
6. Brake lever(page 3-6, 6-21)
7. Throttle grip(page 6-16, 6-28)
8. Fuel tank cap(page 3-7)
2-3
P
U
S
H
OFF
ON
LOCK
O
F
F
O
N
L
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K
I
G
N
I
T
I
O
N
EAU00027
INSTRUMENT AND CONTROL FUNCTIONS
EW000016
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EAU00029
Main switch/steering lock
The main switch/steering lock controls
the ignition and lighting systems, and
is used to lock the steering. The various positions are described below.
EAU00031
ON
All electrical systems are supplied
with power, and the headlight, meter
lighting, taillight and license plate
light come on, and the engine can be
started. The key cannot be removed.
OFF
All electrical systems are off. The key
can be removed.
EAU00038
EAU00040
LOCK
The steering is locked, and all electrical systems are off. The key can be
removed.
To lock the steering
1. Turn the handlebars all the way
to the left.
2. Push the key in from the “OFF”
position, and then turn it to
“LOCK” while still pushing it.
3. Remove the key.
To unlock the steering
Push the key in, and then turn it to
“OFF” while still pushing it.
3-1
Never turn the key to “OFF” or
“LOCK” while the motorcycle is
moving, otherwise the electrical
systems will be switched off,
which may result in loss of control
or an accident. Make sure that the
motorcycle is stopped before turning the key to “OFF” or “LOCK”.
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12 345
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INSTRUMENT AND CONTROL FUNCTIONS
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1. Oil level/coolant temperature warning
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light “WARNING”
2. Oil level symbol “7”
3. Coolant temperature symbol “”
4. Turn signal indicator light “5”
5. High beam indicator light “&”
6. Neutral indicator light “N”
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Indicator and warning lights
7
Oil level/coolant temperature
8
warning light “WARNING”
This warning light has the following
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three functions.
8 When the engine oil level is low,
the warning light comes on and
symbol “7” flashes. If this
occurs, stop the engine immediately and add engine oil to the
specified level.
EAU03034
EAU03587
8 When the coolant temperature is
too high, the warning light comes
on and symbol “” flashes.
Stop the motorcycle and allow it
to idle until the coolant temperature goes down. If the temperature does not go down, stop the
engine. (See the “Engine overheating” section on page 6-44 for
further instructions.)
8 When the engine oil level is low
and the coolant temperature is
too high, the warning light flashes and symbols “7” and “”
come on.
To check that the warning light is
working properly:
8 Put the transmission in neutral or
apply the clutch lever.
8 Turn the engine stop switch to
“#” and the key to “ON”.
8 The light will come on and sym-
bol “7” will appear in the display.
3-2
If the warning light does not come on,
have a Yamaha dealer inspect the
electrical circuit.
EC000118
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8 Do not operate the motorcycle
until you know that the engine
oil level is sufficient.
8 Do not operate the engine if it
is overheated.
NOTE:
Even if the oil is filled to the specified
level, the indicator light may flicker
when riding on a slope or during sudden acceleration or deceleration, but
this is normal.
EAU00057
Turn signal indicator light “5”
This indicator light flashes when the
turn signal switch is pushed to the left
or right.
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1. Oil level/coolant temperature warning
light “WARNING”
2. Oil level symbol “7”
3. Coolant temperature symbol “”
4. Turn signal indicator light “5”
5. High beam indicator light “&”
6. Neutral indicator light “N”
High beam indicator light “&”
This indicator light comes on when
the high beam of the headlight is
switched on.
Neutral indicator light “N”
This indicator light comes on when
the transmission is in the neutral
position.
EAU00063
EAU00061
INSTRUMENT AND CONTROL FUNCTIONS
When in mode “A”:
8 The upper tripmeter can be reset
to zero.
8 The display can be switched
between the clock and the
odometer.
8 The clock can be set.
1. Reset button “RESET”
2. Upper trip odometer
3. Lower trip odometer
4. Digital speedometer
5. Odometer/Clock “ODO/CLOCK”
6. Mode select button “SELECT”
EAU00100
Speedometer unit
The speedometer unit is equipped
with a digital speedometer, an
odometer, two tripmeters and a clock.
The speedometer shows riding
speed. The odometer shows the total
distance traveled. The tripmeter
shows the distance traveled since it
was last set to zero.
The mode select button is used to
switch between modes “A” and “B”.
When in mode “B”:
8 The lower tripmeter can be reset.
8 The lower tripmeter can be
switched between forward count
and reverse count.
Select the modes as follows:
1. Turn the key to “ON”.
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INSTRUMENT AND CONTROL FUNCTIONS
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1. Reset button “RESET”
4
2. Upper trip odometer
3. Lower trip odometer
4. Digital speedometer
5
5. Odometer/Clock “ODO/CLOCK”
6. Mode select button “SELECT”
NOTE:
6
When the key is turned to “ON”, the
speedometer displays “188 km/h” for
7
a few seconds, during which time the
electrical circuit is being checked.
8
2. Push the mode select button to
9
display a mode.
Mode “A”
To set the upper tripmeter to zero,
push the reset button for at least one
second.
To display the clock or odometer
reading, push the mode select button
for one to three seconds.
To set the clock:
1. Push the mode select button
until the hour digits flash.
2. Push the reset button to change
the hour digits.
3. Push the mode select button,
and the minute digits will flash.
4. Push the reset button to change
the minute digits.
5. Push the mode select button
again to set the clock.
Mode “B”
To set the lower tripmeter to zero,
push the reset button for at least one
second.
To switch the tripmeter between forward count and reverse count, push
the mode select button for one to
three seconds. A minus sign will
–
appear when in the reverse count
mode.
To set the reverse count distance:
1. Push the mode select button
until the digit for the hundreds
flashes.
2. Push the reset button to change
the hundreds.
3. Repeat this procedure to change
the tens and ones.
4. Push the mode select button
again to set the tripmeter.
3-4
12
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INSTRUMENT AND CONTROL FUNCTIONS
EAU00129
Horn switch “*”
Press this switch to sound the horn.
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2
1. Dimmer switch
2. Turn signal switch
3. Horn switch “*”
EAU00118
Handlebar switches
EAU00121
Dimmer switch
Set this switch to “&” for the high
beam and to “%” for the low beam.
EAU00127
Turn signal switch
To signal a right-hand turn, push this
switch to “6”. To signal a left-hand
turn, push this switch to “4”. When
released, the switch returns to the
center position. To cancel the turn
signal lights, push the switch in after
it has returned to the center position.
3-5
2
1. Engine stop switch
2. Start switch “,”
EAU00138
Engine stop switch
Set this switch to “$” to stop the
engine in case of an emergency,
such as when the motorcycle overturns or when the throttle cable is
stuck.
EAU00143
Start switch “,”
Push this switch to crank the engine
with the starter.
EC000005
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See page 5-1 for starting instructions prior to starting the engine.
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N
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INSTRUMENT AND CONTROL FUNCTIONS
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1. Clutch lever1. Shift pedal
4
EAU00152
Clutch lever
5
The clutch lever is located at the left
handlebar grip. To disengage the
6
clutch, pull the lever toward the handlebar grip. To engage the clutch,
release the lever. The lever should
7
be pulled rapidly and released slowly
for smooth clutch operation.
8
The clutch lever is equipped with a
clutch switch, which is part of the igni-
9
tion circuit cut-off system. (See page
3-16 for an explanation of the ignition
circuit cut-off system.)
N. Neutral
EAU00157
Shift pedal
The shift pedal is located on the left
side of the engine and is used in
combination with the clutch lever
when shifting the gears of the
6-speed constant-mesh transmission
equipped on this motorcycle.
3-6
1. Brake lever
EAU00158
Brake lever
The brake lever is located at the right
handlebar grip. To apply the front
brake, pull the lever toward the handlebar grip.
1
INSTRUMENT AND CONTROL FUNCTIONS
NOTE:
b
1
a
The fuel tank cap cannot be installed
unless the key is in the lock. In addition, the key cannot be removed if the
cap is not properly installed and
locked.
1
2
1. Brake pedal1. Fuel tank cap
EAU00162
Brake pedal
The brake pedal is on the right side
of the motorcycle. To apply the rear
brake, press down on the brake
pedal.
a. Unlock
b. Open
Fuel tank cap
To remove the fuel tank cap
1. Insert the key into the lock and
turn it 1/4 turn counterclockwise.
2. Turn the fuel tank cap 1/3 turn
counterclockwise and pull it off.
To install the fuel tank cap
1. Insert the fuel tank cap into the
tank opening with the key inserted in the lock, and then turn the
cap 1/3 turn clockwise.
2. Turn the key 1/4 turn clockwise,
and then remove it.
3-7
EAU00177
EW000023
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Make sure that the fuel tank cap is
properly closed and locked before
riding.
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1
2
INSTRUMENT AND CONTROL FUNCTIONS
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EAU00185
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2
3
1. Filler tube
4
2. Fuel level
Fuel
5
Make sure that there is sufficient fuel
in the tank. Fill the fuel tank to the
6
bottom of the filler tube as shown in
the illustration.
7
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8 Do not overfill the fuel tank,
8
otherwise it may overflow
9
when the fuel warms up and
expands.
8 Avoid spilling fuel on the hot
engine.
EAU01183
EW000130
Immediately wipe off spilled fuel
with a clean, dry, soft cloth, since
fuel may deteriorate painted surfaces or plastic parts.
EAU00192
Recommended fuel:
Regular gasoline
For Australia:
Unleaded fuel only
Fuel tank capacity:
Total amount:
11.0 L
Reserve amount:
2.0 L
1. 2-stroke engine oil tank cap
2. 2-stroke engine oil tank
EAU01413
2-stroke engine oil
Make sure that there is sufficient oil in
the 2-stroke engine oil tank. If necessary, add oil as follows.
1. Remove panel A. (See page 6-6
for panel removal and installation
procedures.)
2. Remove the 2-stroke engine oil
tank cap and add the recommended oil.
3. Install the 2-stroke engine oil
tank cap and the panel.
3-8
INSTRUMENT AND CONTROL FUNCTIONS
RES
ON
FUEL
OFF
1
NOTE:
Make sure that the 2-stroke engine
oil tank cap is properly closed.
Recommended oil:
Yamalube 2 or equivalent
2-stroke engine oil (JASO
grade “FC”)
Oil quantity:
1.3 L
OFF: Closed position
1. Arrow mark positioned over “OFF”
EAU03050
Fuel cock
The fuel cock supplies fuel from the
tank to the carburetor while filtering it
also.
The fuel cock has three positions:
OFF
With the lever in this position, fuel will
not flow. Always return the lever to
this position when the engine is not
running.
ON: Normal position
RES
OFF
FUEL
ON
ON
1. Arrow mark positioned over “ON”
ON
With the lever in this position, fuel
flows to the carburetor. Normal riding
is done with the lever in this position.
1
1
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3-9
INSTRUMENT AND CONTROL FUNCTIONS
OFF
ON
FUEL
RES
1
RES
1
RES: Reserve position
1
2
3
1. Arrow mark positioned over “RES”
4
RES
This indicates reserve. If you run out
5
of fuel while riding, move the lever to
this position. Fill the tank at the first
6
opportunity. Be sure to set the lever
back to “ON” after refueling!
7
8
9
a
1
b
1. Starter (choke) lever “1”
EAU02976
Starter (choke) lever “1”
Starting a cold engine requires a richer air-fuel mixture, which is supplied
by the starter (choke).
Move the lever in direction a to turn
on the starter (choke).
Move the lever in direction b to turn
off the starter (choke).
1. Bolt (×2)
EAU00240
Seat
To remove the seat
Remove the bolts, and then pull the
seat off.
3-10
1
2
1. Projection (×2)
1
a
2. Seat holder (×2)
To install the seat
1. Insert the projections on the front
of the seat into the seat holders
as shown.
2. Place the seat in the original
position, and then tighten the
bolts.
NOTE:
Make sure that the seat is properly
secured before riding.
INSTRUMENT AND CONTROL FUNCTIONS
Adjusting the front fork
This front fork is equipped with damping force adjusting screws.
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Always adjust both fork legs
equally, otherwise poor handling
and loss of stability may result.
1. Helmet holder
a. Open
EAU00260
Helmet holder
To open the helmet holder, insert the
key into the lock, and then turn the
key as shown.
To lock the helmet holder, place it in
the original position, and then remove
the key.
EW000030
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Never ride with a helmet attached
to the helmet holder, since the helmet may hit objects, causing loss
of control and possibly an accident.
EAU03589
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