2007 YAMAHA TTR125 warning

3 - 42
INSP
ADJ
3. Replace:
Blown fuse
WARNING
Never use a fuse with an amperage rating
other than that specified. Improvising or
using a fuse with the wrong amperage rat-
ing may cause extensive damage to the
electrical system, cause the starting and
ignition systems to malfunction and could
possibly cause a fire.
4. Install:
Battery cover Replacement steps:
Set the main switch to “OFF”.
Install a new fuse of the correct amperage.
Set on the switches to verify if the electri-
cal circuit is operational.
If the fuse immediately blows again, check
the electrical circuit.
ItemsAmperage
ratingQ’ty
Main fuse 10 A 1
FUSE INSPECTION (TT-R125E/TT-R125LWE)

5 - 1
CHASFRONT WHEEL AND FRONT BRAKE (TT-R125/TT-R125E)
EC500000
CHASSIS
FRONT WHEEL AND FRONT BRAKE (TT-R125/TT-R125E)
Extent of removal:1 Front wheel removal2 Wheel bearing removal
3 Brake shoe plate assembly removal and disassembly
Extent of removal Order Part name Q’ty Remarks
Preparation for removalFRONT WHEEL AND DRUM
BRAKE
Hold the machine by placing the
suitable stand under the engine.
WARNINGSupport the machine securely so there is no
danger of it falling over.
1 Brake cable holder 1
2 Brake cable 1 Disconnect at the lever side, first.
3 Axle nut 1
4 Wheel axle 1
5 Front wheel 1
6 Collar set 1
7 Brake shoe plate assembly 1
8 Oil seal 1
9 Wheel bearing 2 Refer to “REMOVAL POINTS”.
10Spacer
1
2
3
1

5 - 3
CHASFRONT WHEEL AND FRONT BRAKE (TT-R125/TT-R125E)
REMOVAL POINTS
EC513201
Wheel bearing (if necessary)
1. Remove:
Bearing 1
NOTE:
Remove the bearing using a general bearing
puller 2.
INSPECTION
EC514100
Wheel
1. Measure:
Wheel runout
Out of limit → Repair/replace.
Wheel runout limit:
Radial 1: 2.0 mm (0.08 in)
Lateral 2: 2.0 mm (0.08 in)
2. Inspect:
Bearing
Rotate inner race with a finger.
Rough spot/seizure → Replace.
NOTE:
Replace the bearings, oil seal and wheel collar
as a set.
EC514200
Wheel axle
1. Measure:
Wheel axle bends
Out of specification → Replace.
Use the dial gauge 1.
NOTE:
The bending value is shown by one half of the
dial gauge reading.
WARNING
Do not attempt to straighten a bent axle.
Wheel axle bending limit:
0.5 mm (0.020 in)

5 - 5
CHASFRONT WHEEL AND FRONT BRAKE (TT-R125/TT-R125E)
ASSEMBLY AND INSTALLATION
Brake shoe plate assembly
1. Install:
Brake camshaft 1
NOTE:
Apply the lithium soap base grease on the
brake camshaft.
2. Check:
Brake camshaft operation
Unsmooth operation → Repair.
3. Install:
Wear indicator plate 1
NOTE:
When installing the wear indicator plate to the
brake camshaft align the projection a on the
wear indicator plate with the slots b on the
brake camshaft.
4. Install:
Brake camshaft lever 1
NOTE:
Install the brake camshaft lever in relation to
the punch mark a as shown.
1
1a
T R..10 Nm (1.0 m · kg, 7.2 ft · lb)
5. Install:
Springs 1
Brake shoes 2
NOTE:
Apply the lithium soap base grease on the
pivot pin.
WARNING
Do not apply grease to the brake shoe lin-
ings.
New

5 - 8
CHAS
FRONT WHEEL (TT-R125LW/TT-R125LWE)
Extent of removal:1 Front wheel removal2 Wheel bearing removal
3 Brake disc removal
Extent of removal Order Part name Q’ty Remarks
Preparation for removalFRONT WHEEL REMOVAL
Hold the machine by placing the
suitable stand under the engine.
WARNINGSupport the machine securely so there is nodanger of it falling over.
1 Axle nut 1
2 Washer 1
3 Wheel axle 1
4 Front wheel 1
5 Collar 2
6 Oil seal 2
7 Wheel bearing 2 Refer to “REMOVAL POINTS”.
8 Spacer 1
9Brake disk
1
2
31
3
FRONT WHEEL (TT-R125LW/TT-R125LWE)

5 - 9
CHASFRONT WHEEL (TT-R125LW/TT-R125LWE)
REMOVAL POINTS
EC513201
Wheel bearing (if necessary)
1. Remove:
Bearing 1
NOTE:
Remove the bearing using a general bearing
puller 2.
INSPECTION
EC514100
Wheel
1. Measure:
Wheel runout
Out of limit → Repair/replace.
2. Inspect:
Bearing
Rotate inner race with a finger.
Rough spot/seizure → Replace.
NOTE:
Replace the bearings, oil seal and wheel collar
as a set.
Wheel runout limit:
Radial 1: 2.0 mm (0.08 in)
Lateral 2: 2.0 mm (0.08 in)
EC514200
Wheel axle
1. Measure:
Wheel axle bends
Out of specification → Replace.
Use the dial gauge 1.
NOTE:
The bending value is shown by one half of the
dial gauge reading.
WARNING
Do not attempt to straighten a bent axle.
Wheel axle bending limit:
0.5 mm (0.020 in)

5 - 12
CHAS
FRONT BRAKE (TT-R125LW/TT-R125LWE)
Extent of removal:1 Brake hose removal 2 Brake caliper removal
3 Brake master cylinder removal
Extent of removal Order Part name Q’ty Remarks
Preparation for removalFRONT BRAKE REMOVAL
Hold the machine by placing the
suitable stand under the engine.
Drain the brake fluid.
WARNINGSupport the machine securely so there is nodanger of it falling over.
Refer to “REMOVAL POINTS”.
1 Brake hose holder 2
2 Union bolt 1
3 Brake hose 1
4 Joint 1
5 Brake caliper support bolt 1
6 Brake caliper 1 Refer to “REMOVAL POINTS”.
7 Brake lever 1
8 Brake master cylinder bracket 1
9Brake master cylinder
1
3
12
2
3
FRONT BRAKE (TT-R125LW/TT-R125LWE)

5 - 13
CHASFRONT BRAKE (TT-R125LW/TT-R125LWE)
BRAKE CALIPER AND BRAKE MASTER CYLINDER DISASSEMBLY
Extent of removal:1 Brake caliper disassembly2 Brake master cylinder disassembly
Extent of removal Order Part name Q’ty Remarks
Preparation for removalBRAKE CALIPER AND BRAKE
MASTER CYLINDER DISAS-
SEMBLY
Hold the machine by placing the
suitable stand under the engine.
WARNINGSupport the machine securely so there is no
danger of it falling over.
1Brake pad 2
2Brake caliper bracket 1
3Brake caliper piston 2
Refer to “REMOVAL POINTS”. 4Brake caliper dust seal 2
5Brake caliper piston seal 2
6Pin boot 1
7Sleeve boot 1
8Brake master cylinder cap 1
9Diaphragm 1
0Brake master cylinder boot 1
ACirclip 1
BWasher 1
CBrake master cylinder kit 1
2
1