APRILIA RS4 125 Service Station Manual page 42

Characteristics
pos. Description
2 Pinion cover fixing screw
3 TCEI Screws pinion retainer
Cylinder - piston assy.
Coupling categories with cast-iron cylinder
NAME ABBREVIA
TION
Cylinder/Piston M
Cylinder/Piston N
Cylinder/Piston O
Cylinder/Piston P
Rod small end - pin - piston
Characteristic
Rod small end
Maximum diameter: 15.023 mm (0.591 in)
Standard diameter: 15.010 - 15.018 mm (0.5910 - 0.5912 in)
Crankcase - crankshaft - connecting rod
Specification
Class 1
Class 2
Specification
Class 1
Class 2
Specification
Specification
Crankshaft type 2
Crankshaft type 1
CHAR - 42
Type
TEF M5x16
M5x10
C -
YLINDER PISTON COUPLING CLEARANCE
CYLINDER
min max
58.010 58.017
58.017 58.024
58.024 58.031
58.031 58.038
B
USHING SEAT DIAMETER ON CRANKCASE
C
RANKSHAFT DIAMETER
B
USHING THICKNESS
Red
Blue
C
RANKSHAFT COUPLING
Quantity Torque
2 4 Nm (2.95 lb ft)
2 4 Nm (2.95 lb ft)
125
CM
PISTON
min max
57.963 57.970
57.970 57.977
57.977 57.984
57.984 57.991
Desc./Quantity
MIN 36.500 mm (1.4370 in)
MAX 36.508 mm (1.4373 in)
MIN 36.508 mm (1.4373 in)
MAX 36.516 mm (1.4376 in)
Desc./Quantity
MIN 32.480 mm (1.2787 in)
MAX 32.485 mm (1.2789 in)
MIN 32.485 mm (1.2789 in)
MAX 32.490 mm (1.2791 in)
Desc./Quantity
MIN 2.005 mm (0.0789 in)
MAX 2.010 mm (0.0791 in)
MIN 2.010 mm (0.0791 in)
MAX 2.015 mm (0.0793 in)
/
BUSHING SEAT DIAMETER
Desc./Quantity
Type 1 crankcase diameter RED + RED
Type 2 crankcase diameter RED + BLUE
Type 1 crankcase diameter RED + BLUE
Type 2 crankcase diameter BLUE + BLUE
RS4 125
Note
Maximum torque:
5.0 Nm (3.68 lb ft)
Maximum torque:
5.0 Nm (3.68 lb ft) -
Loct. 270
³
FITTING
CLEARANCE
min max
0.040 0.054
0.040 0.054
0.040 0.054
0.040 0.054