YAMAHA TDR 125 2002 Owner's Manual

3-10
EC000114
cCThe following precautions must be
observed to prevent a fire hazard
or other damages.
8Use only unleaded gasoline.
The use of leaded gasoline will
cause unrepairable damage to
the catalytic converter.
8Never park the motorcycle
near possible fire hazards
such as grass or other materi-
als that easily burn.
8Do not allow the engine to idle
too long.
EAU03750
2-stroke engine oilMake sure that there is sufficient oil in
the 2-stroke engine oil tank. Add the
recommended 2-stroke engine oil if
necessary.NOTE:
Make sure that the 2-stroke engine
oil tank cap is properly installed.
INSTRUMENT AND CONTROL FUNCTIONS
3
1
1. 2-stroke engine oil tank cap
Recommended oil:
Yamalube 2 or equivalent
2-stroke engine oil (JASO
grade “FC”, or ISO grades
“EG-C” or “EG-D”)
Oil quantity:
1.2 L
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3-11
INSTRUMENT AND CONTROL FUNCTIONS
3
EAU03050
Fuel cockThe fuel cock supplies fuel from the
tank to the carburetor while filtering it
also.
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
opportunity. Be sure to set the lever
back to “ON” after refueling!
1
OFF
ON
1
1
RES
1. Arrow mark positioned over “OFF”1. Arrow mark positioned over “ON”1. Arrow mark positioned over “RES”OFF: closed position
ON: normal position
RES: reserve position
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3-12
EAU03839
Starter (choke) lever “1”Starting a cold engine requires a rich-
er air-fuel mixture, which is supplied
by the starter (choke).
Move the lever in direction ato turn
on the starter (choke).
Move the lever in direction bto turn
off the starter (choke).
EAU01619
SeatTo remove the seat
1. Insert the key into the seat lock,
and then turn it clockwise.
2. Pull the seat off.To install the seat
1. Insert the projection on the front
of the seat into the seat holder
as shown.
2. Push the rear of the seat down to
lock it in place.
3. Turn the key counterclockwise,
and then remove it.
NOTE:
Make sure that the seat is properly
secured before riding.
INSTRUMENT AND CONTROL FUNCTIONS
3
1
a
b
a
1
2
1. Starter (choke) lever “1”a. Unlock. 1. Projection
2. Seat holder
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3-13
INSTRUMENT AND CONTROL FUNCTIONS
3
EAU00260
Helmet holderTo open the helmet holder, insert the
key into the lock, and then turn the
key as shown.
To lock the helmet holder, place it in
the original position, and then remove
the key.
EW000030
wNever ride with a helmet attached
to the helmet holder, since the hel-
met may hit objects, causing loss
of control and possibly an acci-
dent.
EAU00295
Adjusting the shock
absorber assemblyThis shock absorber assembly is
equipped with a spring preload
adjusting ring.
EC000015
cCNever attempt to turn an adjusting
mechanism beyond the maximum
or minimum settings.
Adjust the spring preload as follows.
To increase the spring preload and
thereby harden the suspension, turn
the adjusting ring in direction a. To
decrease the spring preload and
thereby soften the suspension, turn
the adjusting ring in direction b.NOTE:
Align the appropriate notch in the
adjusting ring with the position indica-
tor on the shock absorber.
a
a
b1
a. Open.1. Spring preload adjusting ring
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3-14
EAU00315
wThis shock absorber contains
highly pressurized nitrogen gas.
For proper handling, read and
understand the following informa-
tion before handling the shock
absorber. The manufacturer can-
not be held responsible for proper-
ty damage or personal injury that
may result from improper han-
dling.
8Do not tamper with or attempt
to open the gas cylinder.
8Do not subject the shock
absorber to an open flame or
other high heat sources, other-
wise it may explode due to
excessive gas pressure.
8Do not deform or damage the
gas cylinder in any way, as
this will result in poor damp-
ing performance.
8Always have a Yamaha dealer
service the shock absorber.
EAU00325
YEIS handling precautionsImproper installation of or damage to
any part of the YEIS (Yamaha
Energy Induction System) will result
in poor performance. Therefore, han-
dle the YEIS air chamber and air
chamber hose with special care and
immediately replace any cracked or
damaged parts.
EC000022
cCDo not attempt to modify the YEIS
in any way.
EAU00027
INSTRUMENT AND CONTROL FUNCTIONS
3
1
1
2
3
4
5
6
7
8
9
1
1. YEIS 1. Position indicator
Setting
Minimum (soft) 1
Standard 4
Maximum (hard) 9
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3-15
INSTRUMENT AND CONTROL FUNCTIONS
3
EAU00326
YPVSThis model is equipped with the
YPVS (Yamaha Power Valve
System). This system boosts engine
performance and efficiency by means
of a variable valve in the exhaust
port. The YPVS valve is constantly
adjusted in accordance with the
engine speed by a computer-con-
trolled servomotor.
Since the YPVS is an important part
of the engine and requires very
sophisticated adjustment, have a
Yamaha dealer, who has the neces-
sary professional knowledge and
experience, make this adjustment.
EC000023
cCThe YPVS has been set and exten-
sively tested at the Yamaha facto-
ry. Changing these settings with-
out sufficient technical knowledge
may result in poor performance of
or damage to the engine.YPVS operation noises can be heard
in the following instances:
8When the key is turned to “ON”
and the engine is started.
8When the engine stalls with the
key in the “ON” position.
EC000024
cCIf the YPVS does not operate, have
a Yamaha dealer check it.
EAU00330
SidestandThe sidestand is located on the left
side of the frame. Raise the side-
stand 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 situ-
ations. (See further down for an
explanation of the ignition circuit cut-
off system.)
1
1. YPVS
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3-16
EW000044
wThe motorcycle must not be ridden
with the sidestand down, or if the
sidestand cannot be properly
moved up (or does not stay up),
otherwise the sidestand could con-
tact the ground and distract the
operator, resulting in a possible
loss of control. Yamaha’s ignition
circuit cut-off system has been
designed to assist the operator in
fulfilling the responsibility of rais-
ing 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 properly.
EAU03720
Ignition circuit cut-off
systemThe ignition circuit cut-off system
(comprising the sidestand switch,
clutch switch and neutral switch) has
the following functions.
8It prevents starting when the
transmission is in gear and the
sidestand is up, but the clutch
lever is not pulled.
8It prevents starting when the
transmission is in gear and the
clutch lever is pulled, but the
sidestand is still down.
8It 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.
EW000045
wIf a malfunction is noted, have a
Yamaha dealer check the system
before riding.
INSTRUMENT AND CONTROL FUNCTIONS
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3-17
INSTRUMENT AND CONTROL FUNCTIONS
3
With the engine turned off:
1. Move the sidestand down.
2. Make sure that the engine stop switch is set to “
#”.
3. Turn the key to “ON”.
4. Shift the transmission into the neutral position.
5. Push the start switch.
Does the engine start?
The neutral switch may be defective.
The motorcycle should not be ridden until
checked by a Yamaha dealer.
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 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.
NO
NOTE:This check is most reliable if performed with
a warmed-up engine.
YESYES NO
The system is OK. The motorcycle can be ridden.
YES NO
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4-1
EAU01114
PRE-OPERATION CHECKS
4The condition of a vehicle is the owner’s responsibility. Vital components can start to deteriorate quickly and unexpect-
edly, even if the vehicle remains unused (for example, as a result of exposure to the elements). Any damage, fluid leak-
age or loss of tire air pressure could have serious consequences. Therefore, it is very important, in addition to a thor-
ough visual inspection, to check the following points before each ride.
EAU03439
Pre-operation check list
ITEM CHECKS PAGE
Fuel•Check fuel level in fuel tank.
•Refuel if necessary.
•Check fuel line for leakage.3-7–3-9
2-stroke engine oil•Check oil level in oil tank.
•If necessary, add recommended oil to specified level.
•Check vehicle for oil leakage.3-10
Transmission oil•Check oil level in transmission case.
•If necessary, add recommended oil to specified level.6-8–6-10
Coolant•Check coolant level in reservoir.
•If necessary, add recommended coolant to specified level.
•Check cooling system for leakage.6-10–6-13
Front brake•Check operation.
•If soft or spongy, have Yamaha dealer bleed hydraulic system.
•Check lever free play.
•Adjust if necessary.
•Check fluid level in reservoir.
•If necessary, add recommended brake fluid to specified level.
•Check hydraulic system for leakage.3-7, 6-21, 6-23–6-24
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4-2
PRE-OPERATION CHECKS
4
Rear brake•Check operation.
•If soft or spongy, have Yamaha dealer bleed hydraulic system.
•Check fluid level in reservoir.
•If necessary, add recommended brake fluid to specified level.
•Check hydraulic system for leakage.3-7, 6-22–6-24
Clutch•Check operation.
•Lubricate cable if necessary.
•Check lever free play.
•Adjust if necessary.3-6, 6-20–6-21
Throttle grip•Make sure that operation is smooth.
•Check free play.
•If neccessary, have Yamaha dealer make adjustment or lubricate.6-17, 6-28
Control cables•Make sure that operation is smooth.
•Lubricate if necessary.6-27
Drive chain•Check chain slack.
•Adjust if necessary.
•Check chain condition.
•Lubricate if necessary.6-25–6-27
Wheels and tires•Check for damage.
•Check tire condition and tread depth.
•Check air pressure.
•Correct if necessary.6-17–6-19
Brake and shift pedals•Make sure that operation is smooth.
•Lubricate pedal pivoting points if necessary.6-29
Brake and clutch levers•Make sure that operation is smooth.
•Lubricate lever pivoting points if necessary.6-29
Sidestand•Make sure that operation is smooth.
•Lubricate pivot if necessary.6-29–6-30 ITEM CHECKS PAGE
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