2004 YAMAHA YFM350R engine

4-9 1. Throttle lever
1. Levier d’accélération
1. Palanca de aceleración
EBU00063
Throttle lever
Once the engine is running, movement of the
throttle lever will increase the engine speed.
Regulate the speed of the machine by varying the
throttle position. Because the throttle is spring-
loaded, the machine will decelerate, and the en-
gine will return to an idle any time the hand is re-
moved from the throttle lever.
Before starting the engine, check the throttle to be
sure it is operating smoothly. Make sure it returns
to the idle position as soon as the lever is released.
WARNING
Malfunction of the throttle could make it diffi-
cult to speed up or slow down when you need
to. This could cause an accident. Check the
operation of the throttle lever before you start
the engine. If the throttle does not work
smoothly, check for the cause. Correct the
problem before riding the ATV or consult a
Yamaha dealer.
U5YT60.book Page 9 Friday, December 12, 2003 1:55 PM

4-11 1. Locknut 2. Adjusting screw a. 12 mm
1. Contre-écrou 2. Vis de réglage
1. Contratuerca 2. Tornillo de ajuste
EBU01198
Speed limiter
The speed limiter keeps the throttle from fully
opening, even when the throttle lever is pushed to
the maximum. Turning in the adjusting screw limits
the maximum engine power available and de-
creases the maximum speed of the ATV.
WARNING
_ Improper adjustment of the speed limiter and
throttle could cause throttle cable damage or
improper throttle operation. You could lose
control, have an accident or be injured. Do not
turn the adjusting screw out more than 12 mm
or the throttle cable could be damaged. Always
make sure the throttle lever free play is adjust-
ed to 2–4 mm. See page 8-43. _
U5YT60.book Page 11 Friday, December 12, 2003 1:55 PM

4-13 1. Clutch lever
1. Levier d’embrayage
1. Palanca de embrague
1. Brake lever
1. Levier de frein
1. Palanca del freno
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Clutch lever
The clutch lever is located on the left handlebar
and the ignition circuit cut-off system is incorporat-
ed 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 “Starting a cold engine”
for a description of the ignition circuit cut-off sys-
tem.)
EBU00988
Brake lever
The brake lever is located on the right handlebar.
Pull it toward the handlebar to apply the front
brake.
U5YT60.book Page 13 Friday, December 12, 2003 1:55 PM

4-17 1. Parking brake lever (Locked position)
1. Levier de frein de stationnement (frein serré)
1. Palanca del freno de estacionamiento
(posición de bloqueo)
1. Parking brake lever (Unlocked position)
1. Levier de frein de stationnement (frein relâché)
1. Palanca del freno de estacionamiento
(posición de desbloqueo)
EBU14072
Parking brake lever
Use the parking brake when you have to start the
engine or park the machine, especially on a slope.
To apply the parking brake, move the parking
brake lever in direction
a. To release the parking
brake, move the parking brake lever in direction
b.
U5YT60.book Page 17 Friday, December 12, 2003 1:55 PM

4-19
WARNING
_

Always set the parking brake before start-
ing the engine. The ATV could start mov-
ing unexpectedly if the parking brake is not
applied. This could cause loss of control or
a collision.


Always be sure you have released the
parking brake before you begin to ride. The
brake could overheat if you ride the ATV
without releasing the parking brake. You
could lose braking performance which
could cause an accident. You could also
wear out the brakes prematurely.
_
U5YT60.book Page 19 Friday, December 12, 2003 1:55 PM

4-21 1. Shift pedal
1. Pédale de sélection
1. Pedal del cambio
1. Drive select lever
1. Levier de présélection
1. Palanca de selección de gama
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Shift pedal
This machine 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 combi-
nation with the clutch when shifting.
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Drive select lever
The drive select lever is used for driving the machine
either forward or in reverse. Refer to page 6-11 for
drive select lever operation.
U5YT60.book Page 21 Friday, December 12, 2003 1:55 PM

4-23 1. Fuel tank cap
1. Bouchon de réservoir de carburant
1. Tapón del depósito de combustible
1. Arrow mark pointing to “OFF”
1. Flèche dirigée vers “OFF”
1. Marca de la flecha señalando a “OFF”OFF PositionRobinet fermé
Posición OFF
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Fuel tank cap
Remove the fuel tank cap by turning it counter-
clockwise.
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Fuel cock
The fuel cock supplies fuel from the fuel tank to the
carburetor.
The fuel cock has three positions.
OFF: With the lever in this position, fuel will not
flow. Always turn the lever to this position
when the engine is not running.
U5YT60.book Page 23 Friday, December 12, 2003 1:55 PM

4-27 1. Starter (choke) “”
1. Starter (enrichisseur) “”
1. Starter (choke) “”
EBU00950
Starter (choke) “”
Starting a cold engine requires a richer air-fuel
mixture. A separate starter circuit supplies this
mixture.
Move in direction
a to turn on the starter (choke).
Move in direction
b to turn off the starter (choke).
Refer to “Starting a cold engine” for proper opera-
tion. (See page 6-3.)
U5YT60.book Page 27 Friday, December 12, 2003 1:55 PM