engine YAMAHA WARRIOR 350 2001 Owner's Manual

5-17
Yuki_Data:Yuki_data:Yuki:Yuki_1:ATV:HM00B067_YFM350X-60:YFM350-5.frame
EL
EBU00151
Throttle lever
Check to see that the throttle lever operates
correctly. It must open smoothly and spring
back to idle position when released. Repair as
necessary for proper operation.
EBU00152
Fittings and Fasteners
Always check the tightness of chassis fittings
and fasteners before a ride. Take the machine
to a Yamaha dealer or refer to the Service Man-
ual for correct tightening torque.
EBU00153
Lights
Check the headlight and taillight to make sure
they are in working condition. Repair as neces-
sary for proper operation.
EBU00155
Switches
Check the operation of the headlight switch,
engine stop switch and any other switches. Re-
pair as necessary for proper operation.

6-3
Yuki_Data:Yuki_data:Yuki:Yuki_1:ATV:HM00B067_YFM350X-60:YFM350-6.frame
EL
EBU00514
Starting a cold engine
WARNING

Always make sure all control cables work
smoothly before you begin riding in cold
weather. If the control cables are frozen or do
not work smoothly, you could be unable to
control the ATV, which could lead to an acci-
dent or collision.
1. Set the parking brake.
2. Turn the fuel cock to “ON”.
3. Turn the main switch to “ON” and the en-
gine stop switch to “RUN”.
4. Shift the transmission into neutral.

6-5
Yuki_Data:Yuki_data:Yuki:Yuki_1:ATV:HM00B067_YFM350X-60:YFM350-6.frame
EL
a. Starter (choke) 1. Fully open
2. Half open 3. Closed
a. Starter (enrichisseur) 1. Complètement ouvert
2. Mi-ouvert 3. Fermé
a. Starter (choke) 1. Abre completamente
2. Semiabierto 3. Cerrado
NOTE:

This model is equipped with an ignition circuit
cut-off system. The engine can be started un-
der the following conditions.
a. When the transmission is in neutral.
At this time the neutral indicator light
should come on. If the light does not
come on, ask a Yamaha dealer to inspect
it.
b. When the clutch is disengaged with the
transmission and drive select lever in any
position. However, it is recommended to
shift into neutral before starting the en-
gine.
5. Use the starter (choke) in reference to the
figure:
Position
1
: Cold engine start-
ambient temperature below 5 ˚C
Position
2
: Cold engine start-
ambient temperature at 0 ˚C ~
30 ˚C and warming up position.
Position
3
: Cold engine start-
ambient temperature above 25 ˚C
and warm engine start position.

6-7
Yuki_Data:Yuki_data:Yuki:Yuki_1:ATV:HM00B067_YFM350X-60:YFM350-6.frame
EL
6. Completely close the throttle lever and
start the engine by pushing the start
switch.
NOTE:

If the engine fails to start, release the start
switch, then push it again. Pause a few sec-
onds before the next attempt. Each cranking
should be as short as possible to preserve bat-
tery energy. Do not crank the engine more than
10 seconds on each attempt.
7. If the engine is started with the starter
(choke) in position
1
, the starter (choke)
should be returned to position
2
to warm
up the engine. If the engine is started with
the starter (choke) in position
2
, keep the
starter (choke) in this position to warm up
the engine.
8. Continue warming up the engine until it
idles smoothly and return the starter
(choke) to position
3
before riding.
CAUTION:

See the “Engine break-in” section prior to op-
erating engine for the first time.

6-9
Yuki_Data:Yuki_data:Yuki:Yuki_1:ATV:HM00B067_YFM350X-60:YFM350-6.frame
EL
EBU00180
Starting a warm engine
To start a warm engine, refer to the “Starting a
cold engine” section. The starter (choke)
should not be used. The throttle should be
opened slightly.
EBU00538
Warming up
To get maximum engine life, always warm up
the engine before starting off. Never accelerate
hard with a cold engine! To see whether or not
the engine is warm, check if it responds to the
throttle normally with the starter (choke)
turned off.NOTE:

When the parking brake is used, engine speed
is limited to 2,300 r/min. Be sure the parking
brake is released before moving the throttle le-
ver. Otherwise, the engine will misfire, pre-
venting normal operation.

6-15
Yuki_Data:Yuki_data:Yuki:Yuki_1:ATV:HM00B067_YFM350X-60:YFM350-6.frame
EL
1. Shift pedal N. Neutral
1. Pédale de sélection N. Point mort
1. Pedal del cambio N. Punto muerto
EBU00199
Shifting
This model has a 6-speed forward and 1-speed
reverse transmission. The transmission allows
you to control the amount of power you have
available at a given speed or for starting, accel-
erating, climbing hills, etc. To shift into neutral,
return the throttle lever to its original position,
apply the clutch and repeatedly depress the
shift pedal until it stops. When it stops, it will
be in first gear. Raise the pedal slightly to neu-
tral.
CAUTION:

1. Do not coast for long periods with the en-
gine off, and do not tow the machine a
long distance. Even in neutral position,
the transmission is only properly lubricat-
ed when the engine is running. Inade-
quate lubrication may cause damage.
2. Always use the clutch when changing
gears. The engine, transmission and driv-
etrain are not designed to withstand the
shock of forced shifting and can be dam-
aged by shifting without the clutch.

6-17
Yuki_Data:Yuki_data:Yuki:Yuki_1:ATV:HM00B067_YFM350X-60:YFM350-6.frame
EL
EBU00204
To start out and accelerate:
1. Release the throttle lever.
CAUTION:

Always close the throttle while shifting gears.
Otherwise, damage to the engine and drive
train may result.
2. Pull the clutch lever to disengage the
clutch.
3. Shift into first gear.
4. Open the throttle gradually and at the
same time, release the clutch lever slowly.
5. Once the machine has attained adequate
speed, release the throttle, and at the
same time, quickly pull in the clutch lever.

6-21
Yuki_Data:Yuki_data:Yuki:Yuki_1:ATV:HM00B067_YFM350X-60:YFM350-6.frame
EL
EBU00208
To decelerate:
When slowing down or stopping, release the
throttle and apply the brakes smoothly and
evenly. As you slow down, shift to a lower
gear. Be sure that the engine has sufficiently
slowed before engaging a lower gear. Improp-
er use of the brakes or shifting can cause the
tires to lose traction, reducing control and in-
creasing the possibility of an accident.
WARNING
Make sure the engine has sufficiently slowed
before shifting to a lower gear. Engaging a
lower gear when the engine speed is too high
could make the wheels stop rotating. This
could cause loss of control, an accident and in-
jury. It could also cause engine or drive traindamage.

6-23
Yuki_Data:Yuki_data:Yuki:Yuki_1:ATV:HM00B067_YFM350X-60:YFM350-6.frame
EL
EBU00209
Engine break-in
There is never a more important period in the
life of your machine than the period between
zero and 20 hours.
For this reason, we ask that you carefully read
the following material. Because the engine is
brand new, you must not put an excessive load
on it for the first several hours of running. Dur-
ing the first 20 hours, the various parts in the
engine wear and polish themselves to the cor-
rect operating clearances.
During this period, prolonged full throttle oper-
ation or any condition which might result in ex-
cessive engine heating must be avoided.
However, momentary (2 ~ 3 seconds maxi-
mum) full throttle operation under load does
not harm the engine.
Each full throttle acceleration sequence should
be followed with a substantial rest period for
the engine by cruising at lower r/min so the en-
gine can rid itself of the temporary build up of
heat.
If any abnormality is noticed during this peri-
od, consult a Yamaha dealer.

6-27
Yuki_Data:Yuki_data:Yuki:Yuki_1:ATV:HM00B067_YFM350X-60:YFM350-6.frame
EL
EBU00211
Parking
When parking, stop the engine and shift into
neutral. Turn the fuel cock to “OFF” and apply
the parking brake.
1. Button 2. Lock plate
1. Bouton 2. Verrou
1. Botón 2. Placa de bloqueo1. Lock position
1. Position de verrouillage
1. Posición de bloqueo