2006 YAMAHA TTR50 warning

INTRODUCTION
Congratulations on your purchase of a
Yamaha TT-R50E/TT-R50EV. This model is
the culmination of Yamaha’s vast experience
in the production of pacesetting racing
machines. It represents the highest grade of
craftsmanship and reliability that have made
Yamaha a leader.
This manual explains operation, inspection
and basic maintenance of your machine. If you
have any questions about this manual or your
machine, please contact your Yamaha dealer.
NOTE:
As improvements are made on this model,
some data in this manual may become out-
dated. If you have any questions, please con-
sult your Yamaha dealer.
WARNING
READ THIS MANUAL CAREFULLY FOR
INSTRUCTIONS ON HOW TO PROPERLY
OPERATE THIS MACHINE.
 ADULT INSTRUCTION AND SUPERVI-
SION ARE REQUIRED.
 WEIGHT OF THE RIDER SHOULD NOT
EXCEED 40 kg (88 lb).
 ALWAYS WEAR A HELMET AND SUIT-
ABLE PROTECTIVE CLOTHING WHEN
RIDING.
 DO NOT TOUCH ANY MOVING PARTS OR
HEATED AREAS.
 ALWAYS PERFORM PRE-OPERATION
CHECKS. REFER TO PAGE 3-3.
 THIS MACHINE IS DESIGNED TO CARRY
THE OPERATOR ONLY. NO PASSEN-
GERS.
 THIS MACHINE IS DESIGNED OFF-ROAD
USE ONLY.
IT IS NOT SUITABLE FOR ON-ROAD USE.

EC080000
HOW TO USE
THIS MANUAL
EC081000
PARTICULARLY IMPORTANT
INFORMATION
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 machine
operator, a bystander, or a person inspecting
or repairing the machine.
A CAUTION indicates special precautions that
must be taken to avoid damage to the
machine.
NOTE: A NOTE provides key information to make pro-
cedures easier or clearer.
WARNING
CAUTION:
EC082000
FINDING THE REQUIRED PAGE
1. This manual consists of six chapters; “Gen-
eral Information ”, “Specifications ”, “Regular
inspection and adjustments ”, “Engine ”,
“ Chassis ” and “Electrical ”.
2. The table of contents is at the beginning of the manual. Look over the general layout of
the book before finding then required chap-
ter and item.
Bend the book at its edge, as shown, to
find the required fore edge symbol mark
and go to a page for required item and
description.

1 - 8
GEN
INFO
CONTROL FUNCTIONS
EC150000
CONTROL FUNCTIONS
MAIN SWITCH
Functions of the respective switch positions
are as follows:
ON: The engine can be started only at this
position.
OFF: All electrical circuits are switched off. The key can be removed in this position.
ENGINE STOP SWITCH
Make sure that the engine stop switch 1 is
positioned to “”. The engine stop switch has
been equipped to ensure safety in an emer-
gency such when the machine is up set or
trouble takes place in the throttle system. The
engine will not start or run when the engine
stop switch is turned to “”.
START SWITCH
The start switch 1 is located on the right han-
dlebar. Push this switch to crank the engine
with the starter.
1
SHIFT PEDAL
The gear ratios of the constant-mesh 3 speed
transmission are ideally spaced. The gears
can be shifted by using the shift pedal 1 on
the left side of the engine.
WARNING
When starting out on the machine, shift the
transmission into 1st after pulling in the
front brake lever and closing the throttle
grip.
3
2
1
N
1

1 - 10
GEN
INFO
CONTROL FUNCTIONS
STARTER LEVER (CHOKE)
When cold, the engine requires a richer air/fuel
mixture for starting. A separate starter circuit,
which is controlled by the starter lever 1, sup-
plies this mixture.
Pull the lever out to open the circuit (for start-
ing) and push the lever in to close the circuit.
1
FUEL TANK CAP
Remove the fuel tank cap 1 by turning
counter-clockwise.
WARNING
Do not overfill the fuel tank. Avoid spilling
fuel on the hot engine.
1
SIDESTAND
This sidestand 1 is used to support only the
machine when standing or transporting it.
WARNING
 Never apply additional force to the side-
stand.
Hold up the sidestand before starting out.1

1 - 11
GEN
INFO
FUEL
Use regular gasoline. Always use fresh, name
brand gasoline.
WARNING
Do not overfill the fuel tank. Avoid spilling
fuel on the hot engine. Do not fill the fuel
tank above the bottom of the filler tube 1
as shown in the illustration or it may over-
flow when the fuel heats up later and
expands.
a Fuel level
CAUTION:
Use only unleaded gasoline. The use of
leaded gasoline will cause severe damage
to the engine internal parts such as valves,
piston rings, and exhaust system, etc.
Recommended fuel: For USA, AUS and NZ: Unleaded gasoline only
For CDN, EUROPE and ZA: Regular unleaded gasoline
only
Fuel tank capacity: Total: 3.1 L (0.68 Imp gal, 0.82 US gal)
Reserve: 0.4 L (0.09 lmp gal, 0.11 US gal)
FUEL

GEN
INFO
1 - 12
STARTING AND OPERATION
STARTING AND OPERATION
CAUTION:
Prior to operating the machine, perform
steps listed in pre-operation check list.
WARNING
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 machine in an
area with adequate ventilation.
STARTING A COLD ENGINE
WARNING
Before starting the engine, be sure to shift
the transmission into neutral.
NOTE:
 This model is equipped with an ignition cir-
cuit cut-off system. In case of electric start-
ing, the engine can be started only when the
transmission is in neutral.
 If the engine fails to start by pushing the start
switch, release the switch, wait a few sec-
onds, and then try again. Each starting
attempt should be as short as possible to
preserve the battery. Do not crank the
engine more than 10 seconds on any one
attempt.
1. Turn the fuel cock to “ON ”.
2. Turn the main switch to “ON ”.
3. Shift the transmission into neutral.
4. Operate the starter (choke) and completely close the throttle grip.
5. Slide the “engine stop ” switch to the “”.
6. Start the engine by pushing the start switch.
7. After the engine starts, warm up for one or
two minutes. Make sure the stater (choke) is
returned to the original position before riding. STARTING A WARM ENGINE
To start a warm engine, refer to the
“START-
ING A COLD ENGINE ” section. The starter
(choke) should not be used. The throttle
should be opened slightly.
CAUTION:
See “Engine break-in Section ” prior to
operating engine for the first time.
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, see if it responds to throttle
normally with the stater (choke) turned off.
WARNING
Before starting off, be sure to turn up or
remove the side stand.
Failure to retract the side stand completely
can result in a serious accident when you
try to turn a corner.
ENGINE BREAK-IN
Break-in is important to better fit the moving
and sliding parts as well as the installed parts.
It is also important to accustom the rider to the
machine better.
Avoid full-throttle run on a new machine for the
first 5 hours.
After the trial run, check for loose parts, oil
leakage and other problems.
Make full inspection and adjustment especially of
slack cables and drive chain and loose spokes.
CAUTION:
After the break-in period, check every fit-
ting and fastener for looseness.
If any loose is found, retighten it securely.

3 - 4
INSPADJ
ENGINE/THROTTLE CABLE ADJUSTMENT
EC350000
ENGINE
THROTTLE CABLE ADJUSTMENT
1. Check:
Throttle grip free play a
Out of specification → Adjust.
Throttle grip free play
a:
3 ~ 5 mm (0.12 ~ 0.20 in)
2. Adjust:
Throttle grip free play
Throttle grip free play adjustment steps:
Carburetor side
NOTE:
Before adjusting the throttle cable free play,
the engine idle speed should be adjusted.
 Remove the seat assembly and air scoop
(right).
Refer to “FRONT FENDER, SEAT
ASSEMBLY AND FUEL TANK ” section in
the CHAPTER 4.
 Pull back the adjuster cover.
 Loosen the locknut 1 on throttle cable.
 Turn the adjuster 2 in or out until the
specified free play is obtained.
Turning in b → Free play is increased.
Turning out c → Free play is decreased.
 Tighten the locknut.
 Slide the adjuster cover to its original posi-
tion.
 Install the seat assembly and air scoop
(right).
NOTE:
If the specified throttle cable free play can-
not be obtained on the carburetor side of the
cable, use the adjusting nut on the handle-
bar side.
WARNING
After adjusting, turn the handlebar to
right and left and make sure that the
engine idling does not run faster.
c
b
1
2

3 - 5
INSPADJTHROTTLE CABLE ADJUSTMENT/
SPEED LIMITER ADJUSTMENT
Handlebar side
Loosen the locknut 3 on throttle cable.
 Turn the adjuster 4 in or out until the
specified free play is obtained.
Turning in d → Free play is increased.
Turning out e → Free play is decreased.
 Tighten the locknut.
WARNING
After adjusting, turn the handlebar to
right and left and make sure that the
engine idling does not run faster.
4
d
e
3
SPEED LIMITER ADJUSTMENT
The speed limiter keeps the carburetor throttle
from becoming fully-opened even when the
throttle lever is applied to the maximum posi-
tion. Screwing in the adjuster stops the engine
speed from increasing.
1. Measure:

speed limiter length a
Out of specification → Adjust.
2. Adjust:
 speed limiter length
Speed limiter length:
Less than 25 mm (0.98 in)
Speed limiter adjustment steps:
 Loosen the locknut 1.
 Turn the adjuster 2 in or out until the
specified speed limiter length is obtained.
Turning in a → Speed limiter length is
decreased.
Turning out b → Speed limiter length is
increased.
a
1 2
a
b