Engine Specifications - Yamaha YXR70FX Service Manual

EBS01002

ENGINE SPECIFICATIONS

Item
Cylinder head
Maximum warpage
Cylinder
Bore
Measuring point
Maximum taper
Out of round
Camshaft
Drive system
Camshaft lobe dimensions
Intake measurement
Exhaust measurement
Maximum camshaft runout
ENGINE SPECIFICATIONS
----
102.000 ~ 102.010 mm
(4.0157 ~ 4.0161 in)
50.0 mm (1.97 in)
Chain drive
A
B
"A" 42.481 ~ 42.581 mm (1.6725 ~ 1.6764 in) 42.381 mm
"B" 36.950 ~ 37.050 mm (1.4547 ~ 1.4587 in) 36.850 mm
"A" 43.129 ~ 43.229 mm (1.6980 ~ 1.7019 in) 43.029 mm
"B" 36.982 ~ 37.082 mm (1.4560 ~ 1.4599 in) 36.882 mm
----
2 - 5
SPEC
Standard Limit
0.03 mm
(0.0012 in)
102.080 mm
(4.0189 in)
----
0.05 mm
(0.002 in)
0.05 mm
(0.002 in)
----
(1.6685 in)
(1.4508 in)
(1.6941 in)
(1.4520 in)
0.015 mm
(0.0006 in)