2007 YAMAHA TTR125 oil

5 - 59
CHASSWINGARM
EC578000
SWINGARM DISASSEMBLY
Extent of removal:1 Swingarm disassembly 2 Connecting arm removal and disassembly
3 Relay arm removal and disassembly
Extent of removal Order Part name Q’ty Remarks
SWINGARM DISASSEMBLY
1Drive chain guard 1
2Drive chain support 1
3Drive chain guide 1
4Dust cover 4
5Collar 1
6Connecting arm 1
7Oil seal 2
8Collar 2
9Dust cover 2
0Bushing 1
ARelay arm 1
BDust cover 2
CBushing 1
DSwingarm 1
3
1
2

5 - 60
CHASSWINGARM
REMOVAL POINTS
Bushing
1. Remove:
Bushing 1
NOTE:
Remove the bushing by pressing.
INSPECTION
Wash the bushings, collars, and covers in a
solvent.
Swingarm
1. Inspect:
Bushing 1
Bushing 2
Damage/pitting → Replace bushings as
a set.
2. Inspect:
Dust cover
Damage → Replace.
3. Inspect:
Swingarm
Damage/bends/cracks → Replace.
Relay arm
1. Inspect:
Collar 1
Bushing 2
Damage/pitting → Replace collar and
bushing as a set.
Bushing 3
Bushing 4
Damage/pitting → Replace bushings as
a set.
Collar 5
Bushing 6
Bushing 7
Damage/pitting → Replace collars and
bushing as a set.
2. Inspect:
Oil seal 8
Dust cover 9
Damage → Replace.
3. Inspect:
Relay arm 0
Damage/bends/cracks → Replace.

5 - 62
CHAS
2. Install:
Oil seals 1
Collars 2
Bushing 3
Dust covers 4
Dust covers 5
Rubber boot 6
On relay arm.
NOTE:
Apply the molybdenum disulfide grease on the
bushing, collar, oil seal lip and dust cover lip.
3. Install:
Collar 1
Dust covers 2
On connecting arm.
NOTE:
Apply the molybdenum disulfide grease on the
collar and dust cover lip.
4. Install:
Relay arm 1
Bolt (relay arm)
Plain washer
Nut (relay arm)
TT-R125/TT-R125E/TT-R125LW
TT-R125LWE
On swingarm.
NOTE:
Apply the molybdenum disulfide grease on the
bolt (relay arm).
T R..70 Nm (7.0 m · kg, 50 ft · lb)
T R..53 Nm (5.3 m · kg, 38 ft · lb)
SWINGARM

5 - 66
CHASREAR SHOCK ABSORBER ASSEMBLY
HANDLING NOTE
WARNING
This rear shock absorber contains high-
pressure nitrogen gas. To prevent the dan-
ger of explosion, read and understand the
following information before handling the
shock absorber.
The manufacturer can not be held responsi-
ble for property damage or personal injury
that may result from improper handling.
1. Never tamper or attempt to open the
rear shock absorber.
2. Never throw the rear shock absorber
into an open flame or other high heat.
The rear shock absorber may explode
as a result of nitrogen gas expansion
and/or damage to the hose.
3. Be careful not to damage any part of
the rear shock absorber. A damaged
rear shock absorber will impair the
damping performance or cause a mal-
function.
4. Take care not to scratch the contact
surface of the piston rod with the cyl-
inder; or oil could leak out.
5. When scrapping the rear shock
absorber, follow the instruction on
disposal.

5 - 67
CHAS
NOTES ON DISPOSAL (YAMAHA DEALERS
ONLY)
Gas pressure must be released before dispos-
ing of a rear shock absorber and gas cylinder.
TT-R125/TT-R125E/TT-R125LW
To release the gas pressure, drill a 2 ~ 3-mm
(0.08 ~ 0.12-in) hole through the gas cylinder
at a point a from its end as shown.
WARNING
Wear eye protection to prevent eye damage
from released gas or metal chips.
TT-R125LWE
To release the gas pressure, press on the gas
valve needle with a suitable tool as shown,
until all of the gas is released (the hissing has
stopped).
ÅTT-R125/TT-R125E/TT-R125LW
ıTT-R125LWE
Å
ı
EC583000
REMOVAL POINTS
Bushing
1. Remove:
Bushing 1
NOTE:
Remove the bushing by pressing.
EC584000
INSPECTION
Rear shock absorber assembly
1. Inspect:
Damper rod 1
Bends/damage → Replace rear shock
absorber assembly.
Shock absorber 2
Oil leaks → Replace rear shock
absorber assembly.
Gas leaks → Replace rear shock
absorber assembly.
Spring 3
Damage → Replace rear shock
absorber assembly.
Fatigue → Replace rear shock
absorber assembly.
Move spring up and down.
REAR SHOCK ABSORBER ASSEMBLY

–+ELEC
6 - 1
ELECTRICAL COMPONENTS AND WIRING DIAGRAM
The illustration shows the TT-R125LW
EC600000
ELECTRICAL
EC610000
ELECTRICAL COMPONENTS AND WIRING DIAGRAM
TT-R125/TT-R125LW
EC611000
ELECTRICAL COMPONENTS
1CDI unit
2Engine stop switch
3Ignition coil
4CDI magneto
5Spark plugCOLOR CODE
B ................. Black
Br ................ Brown
G ................. Green
O ................. Orange
R ................. RedW ................ White
B/R.............. Black/Red
B/W ............. Black/White
G/L .............. Green/Blue
G/W ............ Green/WhiteW/L ............. White/Blue
W/R............. White/Red
EC612000
WIRING DIAGRAM

6 - 2
–+ELEC
The illustration shows the TT-R125LWE
12345 7 6890A
EDCB
ELECTRICAL COMPONENTS AND WIRING DIAGRAM
TT-R125E/TT-R125LWE
EC611000
ELECTRICAL COMPONENTS
1CDI unit
2Main switch
3Start switch
4Clutch switch
5Engine stop switch
6Starting circuit cut-off
relay
7Ignition coil
8Battery
9Starter relay
0Fuse
ARectifier/regulator
BNeutral switch
CCDI magneto
DStarter motor
ESpark plugCOLOR CODE
B ...................... Black
Br ..................... Brown
G...................... Green
O...................... Orange
R ...................... Red
Sb .................... Sky blueW ..................... White
Y ...................... Yellow
B/W.................. Black/White
L/Y ................... Blue/Yellow
R/W ................. Red/White
EC612000
WIRING DIAGRAM
B
R/W
WB
RYW
BR Y
10A
R
BR/W
ON
OFFR
BrRB/WBB/WBr B
ON OFF
R/WBr BB
R/WSbR/W
BB BL/Y
OFF RUN
BBBB/W
W
YWSbBSbY B
G
WBrRG
WBrRB
B/WR
W Br
GO
R
SbR/WR/WR/WR/W
R/W
B
R
B/WBrBr
B
L/Y
BSb
YW
RWBrG
RWBrG
B/W
B/W
BOO
B
B
1
2
3
45 67
8
90 A
BC
DE

–+ELEC
6 - 3
IGNITION SYSTEM
EC620000
IGNITION SYSTEM
INSPECTION STEPS
Use the following steps for checking the possibility of the malfunctioning engine being attributable to
ignition system failure and for checking the spark plug which will not spark.
*marked: Only when the ignition checker is used.
NOTE:
Remove the following parts before inspection.
1) Seat
2) Fuel tank
Use the following special tools in this inspection.
Dynamic spark tester:
YM-34487
Ignition checker:
90890-06754Pocket tester:
YU-3112-C/90890-03112
Spark gap test*Clean or replace
spark plug.
Check entire ignition
system for connection.Repair or replace.
Check main switch.
(TT-R125E/TT-R125LWE
only)Replace.
Check engine stop switch. Replace.
Check ignition coil. Primary coil Replace.
Secondary coil Replace.
Check CDI magneto. Pickup coil Replace.
Source coil Replace.
Replace CDI unit.
No Spark
OK
OK
OK
OK
Spark
No good
No good
No good
No good
No good
No good
OK
No good