wheel YAMAHA TTR125 2000 Notices Demploi (in French)

CHAPTER 4
ENGINE
SEAT, FUEL TANK
AND SIDE COVERS
................................. 4-1
MUFFLER
................................................. 4-2
CARBURETOR
......................................... 4-3
CYLINDER HEAD
................................... 4-12
CAMSHAFT AND ROCKER ARMS
....... 4-20
VALVES AND VALVE SPRINGS
........... 4-24
CYLINDER AND PISTON
....................... 4-32
CLUTCH AND PRIMARY
DRIVEN GEAR
........................................ 4-40
OIL PUMP
............................................... 4-49
KICK AXLE AND SHIFT SHAFT
............ 4-53
CDI MAGNETO
....................................... 4-58
ENGINE REMOVAL
................................ 4-61
CRANKCASE, CRANKSHAFT
AND BALANCER
.................................... 4-65
TRANSMISSION, SHIFT CAM
AND SHIFT FORK
.................................. 4-73
CHAPTER 5
CHASSIS
FRONT WHEEL AND FRONT BRAKE
.... 5-1
REAR WHEEL AND REAR BRAKE
......... 5-8
FRONT FORK
......................................... 5-16
HANDLEBAR
.......................................... 5-25
STEERING
.............................................. 5-31
SWINGARM
............................................ 5-37
REAR SHOCK ABSORBER
................... 5-44
CHAPTER 6
ELECTRICAL
ELECTRICAL COMPONENTS
AND WIRING DIAGRAM
.......................... 6-1
IGNITION SYSTEM
................................... 6-2

GEN
INFO
1 - 7
SPECIAL TOOLS
YM-01312-A, 90890-01312Fuel level gauge
This gauge is used to measure the fuel level in the
float chamber.YM-01312-A 90890-01312
YU-33270-B, 90890-01362 Flywheel puller
This tool is used to remove the rotor.YU-33270-B 90890-01362
YM-33963, 90890-01367
YM-33281, 90890-01400Fork seal driver weight
Fork seal driver attachment
These tools are used to installing the fork oil seal.YM-33963
YM-3328190890-01367
90890-01400
YU-33975, 90890-01403 Steering nut wrench
This tool is used when tighten the steering ring nut to
specification.YU-33975 90890-01403
YS-01880-A, 90890-01701 Sheave holder
This tool is used for when loosening or tightening the
flywheel magneto securing nut.YS-01880-A 90890-01701
YU-03112-C, 90890-03112 Pocket tester
Use this tool to inspect the coil resistance, output
voltage and amperage.YU-03112-C 90890-03112
YU-08036-B
90890-03113Inductive tachometer
Engine tachometer
This tool is needed for observing engine rpm.YU-08036-B 90890-03113
YM-04019, 90890-04019 Valve spring compressor
This tool is needed to remove and install the valve
assemblies.YM-04019 90890-04019
YM-91042, 90890-04086 Clutch holding tool
This tool is used to hold the clutch when removing or
installing the clutch boss securing nut.YM-91042 90890-04086
Part number Tool name/How to use Illustration

GEN
INFO
1 - 15
TORQUE-CHECK POINTS
TORQUE-CHECK POINTS
Engine mounting
Steering Steering shaft to
handlebar
Suspension Front Steering shaft to
front fork
Rear For link type
Rear Installation of shock
absorber
Rear Installation of swing-
arm
Wheel Installation of wheel Front
Rear
Brake Front
Rear
Fuel systemFrame to engine
Frame to engine bracket
Steering shaft to frame
Steering shaft to upper bracket
Upper bracket to handlebar
Front fork to upper bracket
Front fork to lower bracket
Assembly of links
Link to frame
Link to shock absorber
Link to swingarm
Shock absorber to frame
Tightening of pivot shaft
Tightening of wheel axle
Tightening of wheel axle
Wheel to sprocket
Camshaft lever to camshaft
Camshaft lever to camshaft
Fuel tank to fuel cock
NOTE:
Concerning the tightening torque, refer to
“MAINTENANCE SPECIFICATIONS” section
in the CHAPTER 2.

1 - 16
GEN
INFO
CLEANING AND STORAGE
EC1B0000
CLEANING AND STORAGE
EC1B1000
CLEANING
Frequent cleaning of your machine will
enhance its appearance, maintain good over-
all performance, and extend the life of many
components.
1. Before washing the machine, block off
the end of the exhaust pipe to prevent
water from entering. A plastic bag
secured with a rubber band may be used
for this purpose.
2. If the engine is excessively greasy, apply
some degreaser to it with a paint brush.
Do not apply degreaser to the chain,
sprockets, or wheel axles.
3. Rinse the dirt and degreaser off with a
garden hose; use only enough pressure
to do the job.
CAUTION:
Excessive hose pressure may cause water
seepage and contamination of wheel bear-
ings, front forks, brakes and transmission
seals. Many expensive repair bills have
resulted from improper high pressure
detergent applications such as those avail-
able in coin-operated car washers.
4. After the majority of the dirt has been
hosed off, wash all surfaces with warm
water and a mild detergent. Use an old
toothbrush to clean hard-to-reach places.
5. Rinse the machine off immediately with
clean water, and dry all surfaces with a
soft towel or cloth.
6. Immediately after washing, remove
excess water from the chain with a paper
towel and lubricate the chain to prevent
rust.
7. Clean the seat with a vinyl upholstery
cleaner to keep the cover pliable and
glossy.
8. Automotive wax may be applied to all
painted or chromed surfaces. Avoid com-
bination cleaner-waxes, as they may con-
tain abrasives.
9. After completing the above, start the
engine and allow it to idle for several min-
utes.

1 - 17
GEN
INFO
CLEANING AND STORAGE
EC182001
STORAGE
If your machine is to be stored for 60 days or
more, some preventive measures must be
taken to avoid deterioration. After cleaning the
machine thoroughly, prepare it for storage as
follows:
1. Drain the fuel tank, fuel lines, and the
carburetor float bowl.
2. Remove the spark plug, pour a table-
spoon of SAE 10W-30 motor oil in the
spark plug hole, and reinstall the plug.
With the engine stop switch pushed in,
kick the engine over several times to coat
the cylinder walls with oil.
3. Remove the drive chain, clean it thor-
oughly with solvent, and lubricate it.
Reinstall the chain or store it in a plastic
bag tied to the frame.
4. Lubricate all control cables.
5. Block the frame up to raise the wheels off
the ground.
6. Tie a plastic bag over the exhaust pipe
outlet to prevent moisture from entering.
7. If the machine is to be stored in a humid
or salt-air environment, coat all exposed
metal surfaces with a film of light oil. Do
not apply oil to rubber parts or the seat
cover.
NOTE:
Make any necessary repairs before the
machine is stored.

SPEC

2 - 1
GENERAL SPECIFICATIONS
EC200000
SPECIFICATIONS
EC211000
GENERAL SPECIFICATIONS
Model name: TT-R125M
(USA-except for California, CDN, AUS, NZ)
TT-R125MC (USA for California)
TT-R125 (EUROPE)
Model code number: 5HP1 (USA-except for California)
5HP2 (USA for California, AUS, NZ, EUROPE)
5HP3 (CDN)
Dimensions: USA, AUS, NZ,
EUROPECDN
Overall length 1,830 mm (72.0 in) 1,865 mm (73.4 in)
Overall width 785 mm (30.9 in)
¬
Overall height 1,055 mm (41.5 in)
¬
Seat height 775 mm (30.5 in)
¬
Wheelbase 1,250 mm (49.2 in)
¬
Minimum ground clearance 265 mm (10.4 in)
¬
Basic weight:
With oil and full fuel tank 83 kg (183 lb)
Engine:
Engine type Air cooled 4-stroke, SOHC
Cylinder arrangement Single cylinder, forward inclined
Displacement 123.7 cm
3

(7.55 cu.in)
Bore
´
stroke 54.0
´
54.0 mm (2.126
´
2.126 in)
Compression ratio 10.0:1
Starting system Kickstarter
Lubrication system: Wet sump
Oil type or grade:
Engine oil (For USA and CDN)
At –10 ˚C (10 ˚F) or higher

Yamalube 4 (10W-30) or SAE 10W-30 type
SE motor oil
At 5 ˚C (40 ˚F) or higher
õ

Yamalube 4 (20W-40) or SAE 20W-40 type
SE motor oil
(Except for USA and CDN)
API “SE” or higher grade
2

SPEC

2 - 3
GENERAL SPECIFICATIONS
Brake:
Front brake type Drum brake
Operation Right hand operation
Rear brake type Drum brake
Operation Right foot operation
Suspension:
Front suspension Telescopic fork
Rear suspension Swingarm (link type monocross suspension)
Shock absorber:
Front shock absorber Coil spring/oil damper
Rear shock absorber Coil spring/gas, oil damper
Wheel travel:
Front wheel travel 180 mm (7.09 in)
Rear wheel travel 160 mm (6.30 in)
Electrical:
Ignition system CDI magneto

SPEC

2 - 12
MAINTENANCE SPECIFICATIONS
EC212201
CHASSIS
Item Standard Limit
Steering system:
Steering bearing type (upper) Angular bearing ----
(lower) Taper roller bearing ----
Front suspension:
Front fork travel 180 mm (7.09 in) ----
Fork spring free length 327 mm (12.87 in) 322 mm (12.68 in)
Spring rate, STD K = 3.00 N/mm
(0.310 kg/mm, 17.4 lb/in)----
Optional spring/spacer No ----
Oil capacity 159 cm
3


(5.60 Imp oz, 5.38 US oz)----
Oil level 122 mm (4.80 in) ----
Oil grade Fork oil 10W or equivalent ----
Inner tube outer diameter 30 mm (1.18 in) ----
Front fork top end Zero mm (Zero in) ----
Rear suspension:
Shock absorber travel 65 mm (2.56 in) ----
Spring free length 175 mm (6.89 in) ----
Fitting length 165 mm (6.50 in) ----
Spring rate, STD K = 48.1 N/mm
(4.9 kg/mm, 274 lb/in)----
Optional spring No ----
Enclosed gas pressure 1,500 kPa
(15 kg/cm
2

, 213 psi)----
Wheel:
Front wheel type Spoke wheel ----
Rear wheel type Spoke wheel ----
Front rim size/material 17 ´ 1.40/Steel ----
Rear rim size/material 14 ´ 1.60/Steel ----
Rim runout limit:
Radial ---- 2.0 mm (0.08 in)
Lateral ---- 2.0 mm (0.08 in)
Drive chain:
Type/manufacturer DID428 HG(I)/DAIDO ----
Number of links 116 links ----
Chain slack 35 ~ 60 mm (1.4 ~ 2.4 in) ----
Chain length (10 links) ----121.4 mm
(4.78 in)
Drum brake:
Front drum brake type Leading, trailing ----
Rear drum brake type Leading, trailing ----
Front drum inside diameter 110 mm (4.33 in) 111 mm (4.37 in)
Rear drum inside diameter 110 mm (4.33 in) 111 mm (4.37 in)
Front lining thickness 4.0 mm (0.16 in) 2.0 mm (0.08 in)
Rear lining thickness 4.0 mm (0.16 in) 2.0 mm (0.08 in)
Front shoe spring free length 50.5 mm (1.99 in) ----
Rear shoe spring free length 50.5 mm (1.99 in) ----

SPEC
2 - 14
MAINTENANCE SPECIFICATIONS
NOTE:
1. First, tighten the ring nut approximately 38 Nm (3.8 m • kg, 27 ft • lb) by using the ring nut
wrench and turn the steering right and left a few times; then loosen the ring nut one turn.
2. Retighten the ring nut 20 Nm (2.0 m • kg, 14 ft • lb).Part to be tightened Thread size Q’tyTightening torque
Nm m•kg ft•lb
Upper bracket and inner tube M8 ´ 1.25 2 25 2.5 18
Lower bracket and inner tube M10 ´ 1.25 2 60 6.0 43
Upper bracket and steering stem M22 ´ 1.0 1 110 11.0 80
Handlebar upper holder and upper bracket M8 ´ 1.25 4 14 1.4 10
Steering stem and ring nut M25 ´ 1.0 1 Refer to NOTE.
Front fork and cap bolt M25 ´ 1.0 2 23 2.3 17
Front fork and damper rod M10 ´ 1.0 2 23 2.3 17
Front fork and cable guide M6 ´ 1.0 1 7 0.7 5.1
Number plate M6 ´ 1.0 1 7 0.7 5.1
Starter knob M11 ´ 1.25 1 1 0.1 0.7
Starter knob stay M6 ´ 1.0 2 10 1.0 7.2
Grip cap upper and lower M5 ´ 0.8 2 4 0.4 2.9
Throttle cable cap M4 ´ 0.7 2 2 0.2 1.4
Brake lever mounting (bolt) M6 ´ 1.0 1 7 0.7 5.1
Brake lever mounting (nut) M6 ´ 1.0 1 7 0.7 5.1
Brake lever holder M5 ´ 0.8 2 4 0.4 2.9
Clutch lever mounting (bolt) M6 ´ 1.0 1 7 0.7 5.1
Clutch lever mounting (nut) M6 ´ 1.0 1 7 0.7 5.1
Clutch lever holder M5 ´ 0.8 2 4 0.4 2.9
Front wheel axle and axle nut M12 ´ 1.25 1 45 4.5 32
Front brake camshaft lever and camshaft M6 ´ 1.0 1 10 1.0 7.2
Rear wheel axle and axle nutM12 ´ 1.25 1 60 6.0 43
Rear brake camshaft lever and camshaft M6 ´ 1.0 1 10 1.0 7.2
Brake pedal mounting M10 ´ 1.25 1 30 3.0 22
Brake pedal position locknut M6 ´ 1.0 1 7 0.7 5.1
Front wheel nipple (spoke) — 36 2 0.2 1.4
Rear wheel nipple (spoke) — 36 3 0.3 2.2
Driven sprocket and wheel hub M8 ´ 1.25 4 26 2.6 19
Sidestand mounting (nut) M10 ´ 1.25 1 43 4.3 31
Engine mounting:
Engine bracket (front) and frame M8 ´ 1.25 2 40 4.0 29
Engine bracket (front) and engine M8 ´ 1.25 2 40 4.0 29
Engine bracket (upper) and frame M8 ´ 1.25 2 40 4.0 29
Engine bracket (upper) and cylinder head M8 ´ 1.25 1 40 4.0 29
Engine and frame (rear) M8 ´ 1.25 2 40 4.0 29
Pivot shaft and nut M12 ´ 1.25 1 53 5.3 38
Relay arm and swingarm M12 ´ 1.25 1 53 5.3 38

3 - 1
INSP
ADJ

MAINTENANCE INTERVALS
EC300000
REGULAR INSPECTION AND ADJUSTMENTS
MAINTENANCE INTERVALS
The following schedule is intended as a general guide to maintenance and lubrication. Bear in mind
that such factors as weather, terrain, geographical location, and individual usage will alter the
required maintenance and lubrication intervals. If you are a doubt as to what intervals to follow in
maintaining and lubricating your machine, consult your Yamaha dealer.
Dealer
NoteItem Checks and maintenance jobsInitial Every
10 hours
(1 month)60 hours
(6 months)120 hours
(12 months)
*
Fuel lineCheck fuel hoses for cracks or damage.
Replace if necessary.
Spark plugCheck condition.
Clean, regap or replace if necessary.
*
ValvesCheck valve clearance.
Adjust if necessary.
Air filter Clean or replace element if necessary.
*
CarburetorCheck engine idling speed and starter operation.
Adjust if necessary.
Exhaust systemsCheck for leakage.
Retighten if necessary.
Replace gasket if necessary.
Engine oilCheck oil level and vehicle for oil leakage.
Correct if necessary.
Change. (Warm engine before draining.)
ClutchCheck operation.
Adjust or replace cable.
*
Front brakeCheck operation.
Adjust brake lever free play and replace brake
shoes if necessary.Every ride
*
Rear brakeCheck operation.
Adjust brake pedal free play and replace brake
shoes if necessary.Every ride
*
WheelsCheck balance, runout, spoke tightness and for
damage.
Tighten spokes and rebalance, replace if
necessary.
*
TiresCheck tread depth and for damage.
Replace if necessary.
Check air pressure.
Correct if necessary.
*
Wheel bearingsCheck bearing for looseness or damage.
Replace if necessary.
*
SwingarmCheck swingarm pivoting point for play.
Correct if necessary.
Lubricate with lithium soap base grease.
Drive chainCheck chain slack.
Adjust if necessary. Make sure that the rear wheel
is properly aligned.
Clean and lubricate.Every ride
*
Steering bearingsCheck bearing play and steering for roughness.
Correct accordingly.
Lubricate with lithium soap base grease every 120
hours.
SidestandCheck operation.
Lubricate and repair if necessary.
3
3