2004 YAMAHA TTR125 length

4 - 44
ENGCLUTCH AND PRIMARY DRIVEN GEAR
EC484400
Clutch spring
1. Measure:
Clutch spring free length a
Out of specification → Replace springs
as a set.
Clutch spring free length:
33 mm (1.30 in)
: 31 mm (1.22 in)
EC484500
Friction plate
1. Measure:
Friction plate thickness
Out of specification → Replace friction
plate as a set.
Measure at all four points.
EC484600
Clutch plate
1. Measure:
Clutch plate warpage
Out of specification → Replace clutch
plate as a set.
Use a surface plate 1 and thickness
gauge 2.
Push lever
1. Inspect:
Push lever 1
Wear/damage → Replace.
Friction plate thickness:
2.92 ~ 3.08 mm
(0.115 ~ 0.121 in)
: 2.8 mm (0.110 in)
Warp limit:
0.2 mm (0.008 in)

5 - 36
CHASFRONT FORK
EC554400
Fork spring
1. Measure:
Fork spring free length a
Out of specification → Replace.
Fork spring free length:
Standard
TT-R125/TT-R125E:
327 mm (12.9 in)
TT-R125LW:
339 mm (13.3 in)
TT-R125LWE:
453.6 mm
(17.86 in)TT-R125/TT-R125E:
322 mm (12.7 in)
TT-R125LW:
334 mm (13.1 in)
TT-R125LWE:
448.6 mm
(17.66 in)
Inner tube
1. Inspect:
Inner tube surface a
Score marks → Repair or replace.
Use #1,000 grit wet sandpaper.
Damaged oil lock piece → Replace.
Inner tube 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 inner
tube as this may dangerously weaken the
tube.
2. Inspect:
Piston metal 1
Wear/damage → Replace.
Inner tube bending limit:
0.2 mm (0.008 in)

6 - 16
–+ELEC
5. Measure:
Brush length a
Out of specification → Replace.
Brush length wear limit:
3.5 mm (0.14 in)
6. Measure:
Brush spring force
Fatigue/out of specification → Replace
as a set.
Brush spring force:
5.52 ~ 8.28 N
(560 ~ 840 g, 19.8 ~ 29.7 oz)
ASSEMBLY
1. Install:
Brush spring 1
Brush 2
212
2. Install:
Armature assembly 1
Install while holding down the brush
using a thin screw driver.
CAUTION:
Be careful not to damage the brush during
installation.
ELECTRIC STARTING SYSTEM (TT-R125E/TT-R125LWE)