Yamaha DT125RE 2005 Service Manual page 197

ENGINE ASSEMBLY AND ADJUSTMENTS
CRANKSHAFT/PISTON/BALANCER
Balancer gear
Bearing
Straight key
Balancer weight
Bearing
Drive gear
Oil seal
Collar
A PISTON TO CYLINDER CLEARANCE:
0.045~0.050 mm(0.0018~0.0020in)
B EN GAP (INSTALLED):
Top ring
0.30~0.45mm(0.012~0.018in)
rd
2 ring
0.30~0.45mm(0.012~0.018in)
D BALANCER GEAR INSTALLATION
Bearing
k
Piston ring set
10
k
Piston
11
k
Piston pin
12
k
Piston pin clip
13
k
Small end bearing
14
k
Staight key
15
k
Crank (Right)
16
C CRANKSHAFT
Width
Max Runout
Big end side clearance
Big end radial clearance 0.026~0.040mm(0in)
5-35
ENG
k
Thrust bearing
17
k
Connecting rod
18
k
Crank pin
19
k
Big end bearing
20
k
Crank (Left)
21
k
Wodruff key
22
k
Bearing
23
k
Oil seal
24
57.90~57.95mm
(2.279~2.271in)
0.03mm (0.012in)
0.2~0.7mm(0.0079~0.0276in)