2002 YAMAHA TDR 125 ESP

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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3-16
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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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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5-2
OPERATION AND IMPORTANT RIDING POINTS
5
ECA00106
cCThe 2-stroke engine oil level warn-
ing light should come on when the
start switch is pushed, and it
should go off when the start
switch is released. If the warning
light flickers or remains on after
starting, immediately stop the
engine, and then check the
2-stroke engine oil level and the
vehicle for oil leakage. If neces-
sary, add 2-stroke engine oil, and
then check the warning light again.
If the warning light does not come
on when pushing the start switch,
or if it does not go off after starting
with sufficient 2-stroke engine oil,
have a Yamaha dealer check the
electrical circuit.6. After starting the engine, move
the starter (choke) lever back
halfway.
ECA00045
cCFor 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.
EAU01258
Starting a warm engineFollow the same procedure as for
starting a cold engine with the excep-
tion that the starter (choke) is not
required when the engine is warm.
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6-16
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU00632
Adjusting the engine idling
speedThe engine idling speed must be
checked and, if necessary, adjusted
as follows at the intervals specified in
the periodic maintenance and lubrica-
tion chart.
1. Start the engine and warm it up
for several minutes at
1,000–2,000 r/min while occa-
sionally revving it to 4,000–5,000
r/min.NOTE:
The engine is warm when it quickly
responds to the throttle.
2. Check the engine idling speed
and, if necessary, adjust it to
specification by turning the throt-
tle stop screw. To increase the
engine idling speed, turn the
screw in direction a. To
decrease the engine idling
speed, turn the screw in direction
b.
NOTE:
If the specified idling speed cannot
be obtained as described above,
have a Yamaha dealer make the
adjustment.
ba
1
1. Throttle stop screw
Engine idling speed:
1,300 – 1,500 r/min
1,400 – 1,500 r/min (A,CH only)
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6-26
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU03752
To adjust the drive chain slack
1. Loosen the axle nut, then loosen
the locknut at each end of the
swingarm.
2. To tighten the drive chain, turn
the adjusting nut at each end of
the swingarm in direction a. To
loosen the drive chain, turn the
adjusting nut at each end of the
swingarm in direction b, and
then push the rear wheel for-
ward.
NOTE:
Using the alignment marks on each
side of the swingarm, make sure that
both adjusting nuts are in the same
position for proper wheel alignment.
EC000096
cCImproper drive chain slack will
overload the engine as well as
other vital parts of the motorcycle
and can lead to chain slippage or
breakage. To prevent this from
occurring, keep the drive chain
slack within the specified limits.3. Tighten the locknuts, and then
tighten the axle nut to the speci-
fied torque.
EAU03006
Lubricating the drive chainThe drive chain must be cleaned and
lubricated at the intervals specified in
the periodic maintenance and lubrica-
tion chart, otherwise it will quickly
wear out, especially when riding in
dusty or wet areas. Service the drive
chain as follows.
EC000097
cCThe drive chain must be lubricated
after washing the motorcycle or
riding in the rain.1. Clean the drive chain with
kerosene and a small soft brush.
ECA00053
cCTo prevent damaging the O-rings,
do not clean the drive chain with
steam cleaners, high-pressure
washers or inappropriate solvents.
1
4
2
3
a
b1. Axle nut
2. Locknut
3. Adjusting nut
4. Alignment marks
Tightening torque:
Axle nut:
104 Nm (10.4 m0kgf)
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7-1
EAU03521
MOTORCYCLE CARE AND STORAGE
7
CareWhile the open design of a motorcy-
cle reveals the attractiveness of the
technology, it also makes it more vul-
nerable. Rust and corrosion can
develop even if high-quality compo-
nents are used. A rusty exhaust pipe
may go unnoticed on a car, however,
it detracts from the overall appear-
ance of a motorcycle. Frequent and
proper care does not only comply
with the terms of the warranty, but it
will also keep your motorcycle looking
good, extend its life and optimize its
performance.Before cleaning
1. Cover the muffler outlet with a
plastic bag after the engine has
cooled down.
2. Make sure that all caps and cov-
ers as well as all electrical cou-
plers and connectors, including
the spark plug cap, are tightly
installed.
3. Remove extremely stubborn dirt,
like oil burnt onto the crankcase,
with a degreasing agent and a
brush, but never apply such
products onto seals, gaskets,
sprockets, the drive chain and
wheel axles. Always rinse the dirt
and degreaser off with water.Cleaning
ECA00010
cC8Avoid using strong acidic
wheel cleaners, especially on
spoked wheels. If such prod-
ucts are used on hard-to-
remove dirt, do not leave the
cleaner on the affected area
any longer than instructed.
Also, thoroughly rinse the area
off with water, immediately dry
it, and then apply a corrosion
protection spray.
8Improper cleaning can damage
windshields, cowlings, panels
and other plastic parts. Use
only a soft, clean cloth or
sponge with mild detergent
and water to clean plastic.
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