Engine specifications chart – Cub Cadet MTD 70 Series User Manual
Page 127
Crankshaft, piston and connecting rod
121
Engine specifications chart
New Min
New Max
Service Limit
Inch
Metric
Inch
Metric
Inch
Metric
Displacement
P61
122.7 cc (7.5^3)
P65
139.4 cc(8.5^3)
X65
159.3 cc (9.7^3)
P70
173.2 cc (10.6^ 3)
Bore (new)
P61
2.402
61.015
2.403
61.025
2.409
61.182
P65
2.559
65.005
2.560
65.015
2.567
65.193
X65
2.559
65.005
2.560
65.015
2.566
65.183
P70
2.756
70.000
2.756
70.015
2.764
70.196
Bore out of round
P61
0.000
0.000
0.000
0.005
0.000
0.005
P65
0.000
0.000
0.000
0.005
0.000
0.005
X65
0.000
0.000
0.000
0.005
0.000
0.005
P70
0.000
0.000
0.000
0.005
0.000
0.005
Cylinder taper
P61
0.000
0.000
0.000
0.005
0.000
0.005
P65
0.000
0.000
0.000
0.005
0.000
0.005
X65
0.000
0.000
0.000
0.005
0.000
0.005
P70
0.000
0.000
0.000
0.005
0.000
0.005
Crank journal (flywheel
end) diameter
P61
0.984
24.982
0.984
24.993
0.979
24.864
P65
0.984
24.982
0.984
24.993
0.979
24.864
X65
0.984
24.982
0.984
24.993
0.979
24.872
P70
0.983
24.975
0.984
24.989
0.979
24.868
Crank journal (PTO end)
diameter
P61
0.983
24.970
0.984
24.985
0.979
24.864