Page 25 of 72
INSTRUMENT AND CONTROL FUNCTIONS
3-5
2
34
5
6
7
8
9
EAU13561
Fuel cock
The fuel cock supplies fuel from the
tank to the carburetor while filtering it al-
so.
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
With the lever in this position, fuel flows
to the carburetor. Normal riding is done
with the lever in this position.
RES
This indicates reserve. If you run out of
fuel while riding, move the lever to this
position. Fill the tank at the first oppor-
tunity. Be sure to set the lever back to
“ON” after refueling!
1. Arrow mark positioned over “OFF”
RES
ONFUEL
OFF
1
1. Arrow mark positioned over “ON”
1. Arrow mark positioned over “RES”
ON
FUEL
RES
OFF
1
ON
OFF
ONFUEL RES
1
RES
Page 26 of 72
INSTRUMENT AND CONTROL FUNCTIONS
3-6
1
2
3
4
5
6
7
8
9
EAU13590
Starter (choke) lever “”
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).
EAU13680
Kickstarter
To start the engine, fold out the kick-
starter lever, move it down lightly with
your foot until the gears engage, and
then push it down smoothly but force-
fully.
EAU41140
Seat
To remove the seat
Remove the nuts, and then pull the seat
off.
To install the seat
1. Insert the projection on the front of
the seat into the seat holder as
shown.
1. Starter (choke) lever “”
1
(a)(b)
1. Kickstarter
1
1. Nut
1
Page 27 of 72
INSTRUMENT AND CONTROL FUNCTIONS
3-7
2
34
5
6
7
8
9
2. Place the seat in the original posi-
tion, and then tighten the nuts.
NOTE:
Make sure that the seat is properly se-
cured before riding.
EAU15090
Shock absorber
WARNING
EWA10220
This shock absorber contains highly
pressurized nitrogen gas. For prop-
er handling, read and understand
the following information before
handling the shock absorber. The
manufacturer cannot be held re-
sponsible for property damage or
personal injury that may result from
improper handling.
Do not tamper with or attempt to
open the gas cylinder.
Do not subject the shock ab-
sorber to an open flame or other
high heat sources, otherwise it
may explode due to excessive
gas pressure.
Do not deform or damage the
gas cylinder in any way, as this
will result in poor damping per-
formance.
Always have a Yamaha dealer
service the shock absorber.
1. Seat holder
2. Projection
2
1
Page 28 of 72
4-1
1
2
3
4
5
6
7
8
9
PRE-OPERATION CHECKS
EAU15591
The condition of a vehicle is the owner’s responsibility. Vital components can start to deteriorate quickly and unexpectedly,
even if the vehicle remains unused (for example, as a result of exposure to the elements). Any damage, fluid leakage or loss
of tire air pressure could have serious consequences. Therefore, it is very important, in addition to a thorough visual inspec-
tion, to check the following points before each ride.
NOTE:
Pre-operation checks should be made each time the vehicle is used. Such an inspection can be accomplished in a very short
time; and the added safety it assures is more than worth the time involved.
WARNING
EWA11150
If any item in the Pre-operation check list is not working properly, have it inspected and repaired before operating
the vehicle.
Page 29 of 72
PRE-OPERATION CHECKS
4-2
2
3
45
6
7
8
9
EAU15605
Pre-operation check list
ITEM CHECKS PAGE
Fuel
Check fuel level in fuel tank.
Refuel if necessary.
Check fuel line for leakage.3-3
2-stroke engine oil
Check oil level in oil tank.
If necessary, add recommended oil to specified level.
Check vehicle for oil leakage.3-4
Transmission oil
Check oil level in transmission case.
If necessary, add recommended oil to specified level.6-7
Front brake
Check operation.
Lubricate cable if necessary.
Check lever free play.
Adjust if necessary.6-14, 6-16
Rear brake
Check operation.
Check pedal free play.
Adjust if necessary.6-15, 6-16
Throttle grip
Make sure that operation is smooth.
Check cable free play.
If necessary, have Yamaha dealer adjust cable free play and lubricate cable
and grip housing.6-11, 6-19
Control cables
Make sure that operation is smooth.
Lubricate if necessary.6-19
Drive chain
Check chain slack.
Adjust if necessary.
Check chain condition.
Lubricate if necessary.6-16, 6-18
Wheels and tires
Check for damage.
Check tire condition and tread depth.
Check air pressure.
Correct if necessary.6-12, 6-13
Page 30 of 72
PRE-OPERATION CHECKS
4-3
1
2
3
4
5
6
7
8
9
Brake and shift pedals
Make sure that operation is smooth.
Lubricate pedal pivoting points if necessary.6-20
Brake lever
Make sure that operation is smooth.
Lubricate lever pivoting point if necessary.6-20
Sidestand
Make sure that operation is smooth.
Lubricate pivot if necessary.6-21
Chassis fasteners
Make sure that all nuts, bolts and screws are properly tightened.
Tighten if necessary.—
Engine stop switch
Check operation.3-1
ITEM CHECKS PAGE
Page 31 of 72
5-1
2
3
4
56
7
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9
OPERATION AND IMPORTANT RIDING POINTS
EAU41680
WARNING
EWA14620
This model is designed for
off-road use only. Become thor-
oughly familiar with all operat-
ing controls and their functions
before riding. Consult a Yamaha
dealer regarding any control or
function that you do not thor-
oughly understand.
Never start the engine or oper-
ate it in a closed area for any
length of time. Exhaust fumes
are poisonous, and inhaling
them can cause loss of con-
sciousness and death within a
short time. Always make sure
that there is adequate ventila-
tion.
Before starting out, make sure
that the sidestand is up. If the
sidestand is not raised com-
pletely, it could contact the
ground and distract the opera-
tor, resulting in a possible loss
of control.
EAU41150
Starting and warming up a
cold engine
1. Turn the fuel cock lever to “ON”.
2. Set the engine stop switch to
“RUN”.
3. Shift the transmission into the neu-
tral position.
WARNING
EWA14410
Be sure to shift the transmis-
sion into neutral before starting
the engine.
Never ride with the sidestand
down.
4. Turn the starter (choke) on and
completely close the throttle. (See
page 3-6.)
5. Start the engine by pushing the
kickstarter lever down.
6. After starting the engine, move the
starter (choke) back halfway.
CAUTION:
ECA11130
For maximum engine life, always
warm the engine up before starting
off. Never accelerate hard when the
engine is cold!
7. When the engine is warm, turn the
starter (choke) off.
NOTE:
The engine is warm when it responds
normally to the throttle with the starter
(choke) turned off.
Page 32 of 72
OPERATION AND IMPORTANT RIDING POINTS
5-2
1
2
3
4
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6
7
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9
EAU16660
Starting a warm engine
Follow the same procedure as for start-
ing a cold engine with the exception
that the starter (choke) is not required
when the engine is warm. Instead, start
the engine with the throttle slightly
open.
NOTE:
If the engine does not start after several
kicks, try again with the throttle 1/4 to 1/
2 open.
EAU39901
Shifting
This motorcycle has a 3-speed trans-
mission with a centrifugal, automatic
clutch. Shifting gears lets you control
the amount of engine power available
for starting off, accelerating, climbing
hills, etc.
The gear positions are shown in the il-
lustration.
NOTE:
To shift the transmission into the neu-
tral position, press the shift pedal down
repeatedly until it reaches the end of its
travel.
CAUTION:
ECA15441
Even with the transmission in
the neutral position, do not
coast for long periods of time
with the engine off, and do not
tow the motorcycle for long dis-
tances. The transmission is
properly lubricated only when
the engine is running. Inade-
quate lubrication may damage
the transmission.
Always release the throttle grip
before changing gears to avoid
damaging the engine, transmis-
sion, and drive train, which are
not designed to withstand the
shock of shifting when the throt-
tle grip is open.
EAU39910
To start out and accelerate
1. Close the throttle.
2. Shift into first gear and release the
shift pedal.
CAUTION:
ECA15460
Always close the throttle before
1. Shift pedal
2. Neutral position
1
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