Yamaha VMX12 2001, Service Manual

Page: 32 / 454

2 - 8
SPEC
ENGINE SPECIFICATIONS
Piston rings
Top ring
Ring type Barrel ----
Dimensions (B
×
T) 1.0
×
3.1 mm ----
End gap (installed) 0.35 ~ 0.50 mm 0.75 mm
Ring side clearance 0.03 ~ 0.07 mm 0.12 mm
2nd ring
Ring type Taper ----
Dimensions (B
×
T) 1.2
×
3.1 mm ----
End gap (installed) 0.35 ~ 0.50 mm 0.75 mm
Ring side clearance 0.02 ~ 0.06 mm 0.12 mm
Oil ring
Dimensions (B
×
T) 2.5
×
3.1 mm ----
End gap (installed) 0.2 ~ 0.8 mm ----
Connecting rods
Crankshaft-pin-to-big-end-bearing
clearance 0.021 ~ 0.039 mm ----
Bearing color code 1 = Blue 2 = Black 3 = Brown 4 = Green
5 = Yellow 6 = Pink ----
Crankshaft
Width A 83.92 ~ 83.97 mm ----
Width B 242.72 ~ 243.17 mm ----
Max. runout C ---- 0.03 mm
Big end side clearance D 0.320 ~ 0.924 mm ----
Big end radial clearance 0.021 ~ 0.045 mm ----
Crankshaft-journal-to-crankshaft-
journal-bearing clearance 0.040 ~ 0.058 mm 0.1 mm
Bearing color code 1 = Blue 2 = Black 3 = Brown 4 = Green
5 = Yellow 6 = Pink 7 = Red ----
Item Standard Limit
T
B
B
T
B
T
B
A
D
C