2004 YAMAHA TZR50 check engine

SAFETY INFORMATION.....................1-1
DESCRIPTION.....................................2-1
Left view ...........................................2-1
Right view .........................................2-2
Controls and instruments .................2-3
INSTRUMENT AND CONTROL
FUNCTIONS........................................3-1
Main switch/steering lock .................3-1
Indicator lights ..................................3-1
Speedometer unit .............................3-2
Tachometer .......................................3-3
Handlebar switches ..........................3-3
Clucht lever .......................................3-4
Shift pedal.........................................3-4
Brake lever ........................................3-4
Brake pedal.......................................3-5
Fuel tank cap ....................................3-5
Catalytic converter............................3-6
2-stroke engine oil ............................3-6
Fuel cock ..........................................3-6
Starter (choke) lever..........................3-7
Seat...................................................3-7
Storage compartment.......................3-7
Sidestand ..........................................3-8
Ignition circuit cut-off system ...........3-8
PRE-OPERATION CHECKS...............4-1
Pre-operation check list....................4-2OPERATION AND IMPORTANT RIDING
POINTS................................................5-1
Starting a cold engine ......................5-1
Shifting ..............................................5-2
Tips for reducing fuel consumption..5-2
Engine break-in.................................5-3
Parking ..............................................5-3
PERIODIC MAINTENANCE AND
MINOR RAPAIR...................................6-1
Owner’s tool kit .................................6-1
Periodic maintenance and lubrication
chart ..................................................6-2
Removing and installing cowlings ....6-5
Checking the spark plug ..................6-6
Transmission oil ................................6-6
To check the coolant level ................6-8
Adjusting the carburetor ...................6-9
Adjusting the engine idling speed ....6-9
Adjusting the throttle cable free play ..6-9
Tires ................................................6-10
Cast wheels ....................................6-12
Adjusting the clucth lever free play 6-12
Adjusting the brake pedal position
and free play................................6-13
Adjusting the rear brake light
switch ..........................................6-13
Front brake pads ............................6-14
Rear brake pads .............................6-14
Checking the brake fluid level ........6-14
Changing the brake fluid ................6-15Drive Chain slack ............................6-16
Checking and lubricating the
cables ..........................................6-17
Checking and lubricating the brake
and shift pedals ...........................6-17
Checking and lubricating the brake
and cluctch levers .......................6-18
Checking and lubricating the
sidestand .....................................6-18
Checking the front fork ...................6-18
Checking the steering.....................6-19
Checking the wheel bearings .........6-19
Battery ............................................6-19
Replacing the fuse ..........................6-20
Replacing the headlight bulb..........6-21
Replacing a turn signal light bulb
or the tail/brake light bulb ...........6-21
Replacing the license plate light
bulb .............................................6-22
Supporting the mortorcycle ............6-22
Troubleshooting ..............................6-23
Troubleshooting charts ...................6-24
Engine overheating .........................6-25
MOTORCYCLE CARE AND
STORAGE............................................7-1
Care ..................................................7-1
Storage ...........................................7-2
SPECIFITACIONS...............................8-1
TABLE OF CONTENTS
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EAU11020
Turn signal indicator light “b”
This indicator light flashes when the
turn signal switch is pushed to the left
or right.
EAU11060
Neutral indicator light “N”
This indicator light comes on when
the transmission is in the neutral posi-
tion.
EAU11120
Oil level warning light “z”
This warning light comes on when the
engine oil level is low.
The electrical circuit of the warning
light can be checked by turning the
key to “ON”.
If the warning light does not come on
for a few seconds, then go off, have a
Yamaha dealer check the electrical
circuit.
NOTE:
Even if the oil level is sufficient, the
warning light may flicker when riding
on a slope or during sudden accelera-
tion or deceleration, but this is not a
malfunction.
EAU11440
Coolant temperature warning light
“y”
This warning light comes on when the
engine overheats. When this occurs,
stop the engine immediately and
allow the engine to cool.
The electrical circuit of the warning
light can be checked by turning the
key to “ON”.
If the warning light does not come on
for a few seconds, then go off, have a
Yamaha dealer check the electrical
circuit.
ECA10020
CAUTION
Do not operate the engine if it is
overheated.
EAU11620
Speedometer unit
1. Speedometer/Odometer
The speedometer unit is equipped
with a speedometer and an odometer.
The speedometer shows riding spe-
ed. The odometer shows the total dis-
tance traveled.
3
INSTRUMENT AND CONTROL FUNCTIONS
3-2
1
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When storing the owner’s manual or
other documents in the storage com-
partment, be sure to wrap them in a
plastic bag so that they will not get
wet. When washing the motorcycle,
be careful not to let any water enter
the storage compartment.
EAU15300
Sidestand
1. Side stand
The sidestand is located on the left
side of the frame. Raise the sidestand
or lower it with your foot while holding
the motorcycle upright.
NOTE:
The built-in sidestand switch is part of
the ignition circuit cut-off system,
which cuts the ignition in certain
situations. (See further down for an
explanation of the ignition circuit cut-
off system.)
EWA10240
s s
WARNING
The vehicle must not be ridden with
the sidestand down, or if the sides-
tand cannot be properly moved up
(or does not stay up), otherwise the
sidestand could contact the ground
and distract the operator, resulting
in a possible loss of control. Yama-
ha’s ignition circuit cut-off system
has been designed to assist the
operator in fulfilling the responsibi-
lity of raising the sidestand before
starting off. Therefore, check this
system regularly as described
below and have a Yamaha dealer
repair it if it does not function pro-
perly.
EAU15311
Ignition circuit cut-off
system
The ignition circuit cut-off system
(comprising the sidestand switch,
clutch switch and neutral switch) has
the following functions.
It prevents starting when the
transmission is in gear and the
sidestand is up, but the clutch
lever is not pulled.
It prevents starting when the
transmission is in gear and the
clutch lever is pulled, but the
sidestand is still down.
It cuts the running engine when
the transmission is in gear and
the sidestand is moved down.
Periodically check the operation of
the ignition circuit cut-off system
according to the following procedure.
EWA10250
s s
WARNING
If a malfunction is noted, have a
Yamaha dealer check the system
before riding.
3
INSTRUMENT AND CONTROL FUNCTIONS
3-8
1
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INSTRUMENT AND CONTROL FUNCTIONS
3-9
3
With the engine turned off:
1. Move the sidestand down.
2. Make sure that the engine stop switch is turned on.
3. Turn the key on.
4. Shift the transmission into the neutral position.
5. Push the start switch.
Does the engine start?
With the engine still running:
6. Move the sidestand up.
7. Keep the clutch lever pulled.
8. Shift the transmission into gear.
9. Move the sidestand down.
Does the engine stall?
After the engine has stalled:
10. Move the sidestand up.
11. Keep the clutch lever pulled.
12. Push the start switch.
Does the engine start?
The system is OK. The motorcycle can be ridden.
This check is most reliable if performed with
a warmed-up engine.
The neutral switch may be defective.
The motorcycle should not be ridden until
checked by a Yamaha dealer.
The sidestand switch may be defective.
The motorcycle should not be ridden until
checked by a Yamaha dealer.
The clutch switch may be defective.
The motorcycle should not be ridden until
checked by a Yamaha dealer.
YES NO YES NO YES NONOTE:
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NOTE:
This check is most reliable if performed with a warmed-up engine.
INSTRUMENT AND CONTROL FUNCTIONS
3-10
3
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EAU15603
Pre-operation check list
PRE-OPERATION CHECKS
4-2
4
ITEM CHECKS PAGE
• Check fuel level in fuel tank.
Fuel• Refuel if necessary.3-5
• Check fuel line for leakage.
• Check oil level in oil tank.
2-stroke engine oil• If necessary, add recommended oil to specified level. 3-6
• Check vehicle for oil leakage.
Transmission oil• Check oil level in transmission case.
• If necessary, add recommended oil to specified level.6-6
• Check coolant level in reservoir.
Coolant• If necessary, add recommended coolant to specified level. 6-8
• Check cooling system for leakage.
• Check operation.
• If soft or spongy, have Yamaha dealer bleed hydraulic system.
• Check lever free play.
• Adjust if necessary.
Front brake• Check brake pads for wear. 6-14
• Replace if necessary.
• Check fluid level in reservoir.
• If necessary, add recommended brake fluid to specified level.
• Check hydraulic system for leakage.
• Check operation.
• If soft or spongy, have Yamaha dealer bleed hydraulic system.
• Check brake pads for wear.
Rear brake• Replace if necessary. 6-14
• Check fluid level in reservoir.
• If necessary, add recommended brake fluid to specified level.
• Check hydraulic system for leakage.
• Check operation.
Clutch• Lubricate cable if necessary.
6-12
• Check lever free play.
• Adjust if necessary.
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ITEM CHECKS PAGE
• Make sure that operation is smooth.
Throttle grip• Check cable free play.
6-9
• If necessary, have Yamaha dealer adjust cable free play and
lubricate cable and grip housing.
Control cables• Make sure that operation is smooth.
• Lubricate if necessary.6-17
• Check chain slack.
Drive chain• Adjust if necessary.
6-16
• Check chain condition.
• Lubricate if necessary.
• Check for damage.
Wheels and tires• Check tire condition and tread depth.
6-10
• Check air pressure.
• Correct if necessary.
Brake and clutch levers• Make sure that operation is smooth.
• Lubricate lever pivoting points if necessary.6-18
Sidestand• Make sure that operation is smooth.
• Lubricate pivot if necessary.6-18
Chassis fasteners• Make sure that all nuts, bolts and screws are properly tightened.
• Tighten if necessary.—
Instruments, lights, signals • Check operation.
and switches• Correct if necessary.—
Engine stop switch• Check operation.3-3
Sidestand switch• Check operation of ignition circuit cut-off system.
• If system is defective, have Yamaha dealer check vehicle.3-8
PRE-OPERATION CHECKS
4-3
4
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EAU16000
Starting a cold engine
In order for the ignition circuit cut-off
system to enable starting, one of the
following conditions must be met:
The transmission is in the neutral
position.
The transmission is in gear with
the clutch lever pulled and the
sidestand up.
EWA10290
s s
WARNING
Before starting the engine,
check the function of the igni-
tion circuit cut-off system
according to the procedure
described on page 3-9.
Never ride with the sidestand
down.
1. Turn the fuel cock lever to “ON”.
2. Turn the key to “ON” and make
sure that the engine stop switch
is set to “f”.
3. Shift the transmission into the
neutral position.
NOTE:
When the transmission is in the neu-
tral position, the neutral indicator light
should be on, otherwise have a
Yamaha dealer check the electrical
circuit.
4. Turn the starter (choke) on and
completely close the throttle.
(See page 3-7.)
5. Start the engine by pushing the
start switch.
NOTE:
If the engine fails to start, release the
start switch, wait a few seconds, and
then try again. Each starting attempt
should be as short as possible to pre-
serve the battery. Do not crank the
engine more than 10 seconds on any
one attempt.
ECA11160
CAUTION
If the oil level warning light flickers
or remains on after starting, imme-
diately stop the engine, and then
check the engine oil level and the
vehicle for oil leakage. If necessary,
add engine oil, and then check thewarning light again. If the warning
light does not go off after starting
with sufficient engine oil, have a
Yamaha dealer check the electrical
circuit.
6. After starting the engine, move
the starter (choke) back halfway.
ECA11040
CAUTION
For maximum engine life, 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.
5
OPERATION AND IMPORTANT RIDING POINTS
5-1
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