engine assembly YAMAHA TTR125 2005 Owner's Manual

4 - 68
ENGENGINE REMOVAL
REMOVAL POINTS
Drive sprocket
1. Remove:
Bolt (drive sprocket)
Drive sprocket holder 1
Drive sprocket 2
Drive chain 3
NOTE:
Remove the drive sprocket together with the
drive chain.
Engine removal
1. Remove:
Engine 1
From left side.
NOTE:
Make sure that the couplers, hoses and cables
are disconnected.
ASSEMBLY AND INSTALLATION
Engine installation
1. Install:
Engine 1
Install the engine from left side.
Engine mounting bolt (rear) 2
Engine bracket (front) 3
Bolt (engine bracket) 4
Engine mounting bolt (lower) 5
Engine mounting bolt (front) 6
Engine bracket (upper) 7
Engine mounting bolt (upper) 8
Bolt (engine bracket) 9
T R..40 Nm (4.0 m · kg, 29 ft · lb)
T R..40 Nm (4.0 m · kg, 29 ft · lb)
T R..40 Nm (4.0 m · kg, 29 ft · lb)
T R..40 Nm (4.0 m · kg, 29 ft · lb)
T R..40 Nm (4.0 m · kg, 29 ft · lb)
T R..40 Nm (4.0 m · kg, 29 ft · lb)

4 - 70
ENGCRANKCASE, CRANKSHAFT AND BALANCER
CRANKCASE, CRANKSHAFT AND BALANCER
Extent of removal:1 Crankcase separation2 Balancer removal
3 Crankshaft removal
Extent of removal Order Part name Q’ty Remarks
CRANKCASE, CRANKSHAFT
AND BALANCER REMOVAL
Preparation for removal Engine Refer to “ENGINE REMOVAL” section.
Piston Refer to “CYLINDER AND PISTON” sec-
tion.
Primary drive gear Refer to “CLUTCH AND PRIMARY
DRIVEN GEAR” section.
Kick axle assembly
Refer to “KICK AXLE AND SHIFT
SHAFT” section.
Segment
Rotor for the TT-R125/
TT-R125LWRefer to “CDI MAGNETO” section for the
TT-R125/TT-R125LW.
(Rotor and starter clutch for the
TT-R125E/TT-R125LWE)(Refer to “CDI MAGNETO AND
STARTER CLUTCH” section for the
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 - 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

5 - 24
CHAS
REAR WHEEL AND REAR BRAKE
Extent of removal:1 Rear wheel removal 2 Wheel bearing removal
3 Brake shoe plate assembly removal and disassembly
Extent of removal Order Part name Q’ty Remarks
Preparation for removalREAR WHEEL AND DRUM
BRAKE
Hold the machine by placing the
suitable stand under the engine.
WARNINGSupport the machine securely so there is nodanger of it falling over.
1 Brake rod 1
2 Axle nut 1
3 Drive chain puller (right) 1
4 Wheel axle 1
5 Drive chain puller (left) 1
6 Drive chain 1
7 Rear wheel 1 Refer to “REMOVAL POINTS”.
8 Collar (right) 1
9 Brake shoe plate assembly 1
10Collar (left)
1
231
REAR WHEEL AND REAR BRAKE

5 - 42
CHASHANDLEBAR
EC5B0000
HANDLEBAR
TT-R125
Extent of removal:1 Handlebar removal
Extent of removal Order Part name Q’ty Remarks
Preparation for removalHANDLEBAR REMOVAL
Number plate
1 Clutch cable 1
2 Clutch lever 1
3 Engine stop switch 1
4 Front brake cable 1
5 Front brake lever 1
6 Grip cap (lower) 1
7 Grip cap (upper) 1
8 Throttle cable 1
9 Throttle grip assembly 1
10 Collar 1
11 Handlebar grip (left) 1 Refer to “REMOVAL POINTS”.
12 Handlebar holder 2
13 Handlebar 1
1

5 - 43
CHASHANDLEBAR
TT-R125E
Extent of removal:1 Handlebar removal
Extent of removal Order Part name Q’ty Remarks
Preparation for removalHANDLEBAR REMOVAL
Number plate
1 Clutch cable 1
2 Clutch lever 1
3 Engine stop switch 1
4 Front brake cable 1
5 Start switch 1
6 Front brake lever 1
7 Grip cap (lower) 1
8 Grip cap (upper) 1
9 Throttle cable 1
10 Throttle grip assembly 1
11 Collar 1
12 Handlebar grip (left) 1 Refer to “REMOVAL POINTS”.
13 Main switch 1
14 Handlebar holder 2
15 Handlebar 1
1

5 - 44
CHAS
TT-R125LW
Extent of removal:1 Handlebar removal
Extent of removal Order Part name Q’ty Remarks
Preparation for removalHANDLEBAR REMOVAL
Number plate
1 Clutch cable 1
2 Clutch lever 1
3 Engine stop switch 1
4 Brake master cylinder 1 Refer to “REMOVAL POINTS”.
5 Grip cap (lower) 1
6 Grip cap (upper) 1
7 Throttle cable 1
8 Throttle grip assembly 1
9 Collar 1
10 Handlebar grip (left) 1 Refer to “REMOVAL POINTS”.
11 Upper handlebar holder 2
12 Handlebar 1
1
HANDLEBAR

5 - 45
CHASHANDLEBAR
TT-R125LWE
Extent of removal:1 Handlebar removal
Extent of removal Order Part name Q’ty Remarks
Preparation for removalHANDLEBAR REMOVAL
Number plate
1 Clutch cable 1
2 Clutch lever 1
3 Engine stop switch 1
4 Brake master cylinder 1 Refer to “REMOVAL POINTS”.
5 Start switch 1
6 Grip cap (lower) 1
7 Grip cap (upper) 1
8 Throttle cable 1
9 Throttle grip assembly 1
10 Handlebar grip (left) 1 Refer to “REMOVAL POINTS”.
11 Main switch 1
12 Upper handlebar holder 2
13 Handlebar 1
1

5 - 65
CHASREAR SHOCK ABSORBER ASSEMBLY
EC580000
REAR SHOCK ABSORBER ASSEMBLY
Extent of removal:1 Rear shock absorber assembly removal
Extent of removal Order Part name Q’ty Remarks
Preparation for removalREAR SHOCK ABSORBER
ASSEMBLY REMOVAL
Hold the machine by placing the
suitable stand under the engine.
WARNINGSupport the machine securely so there is nodanger of it falling over.
Seat and side covers Refer to “SEAT, FUEL TANK AND SIDE
COVERS” section in the CHAPTER 4.
1 Bolt (rear shock absorber assem-
bly-relay arm)1 Hold the swingarm.
2 Bolt (rear shock absorber assem-
bly-frame)1
3 Bushing 1 Refer to “REMOVAL POINTS”.
4 Rear shock absorber assembly 1
1