Owner's manual

Crankshaft, piston and connecting rod
101
Engine specifications chart
Specification Minimum Maximum
in mm in mm
Displacement 11.9 cu. in (195 cc)
Bore 2.7953” 71.001 2.7957” 71.011
Stroke 1.937” (49.2 mm)
Module air gap 0.004” 0.10 0.020” 0.50
Spark plug gap 0.024” 0.60 0.031” 0.80
Intake valve lash 0.004” 0.10 0.006” 0.15
Exhaust valve lash 0.006” 0.15 0.008” 0.20
Valve seat angle
46
o
Valve seat width 0.044 1.13 0.054 1.38
Crankshaft end play 0.000”
Crank pin diameter 1.0995 27.927 1.100 27.940
Crankshaft journal OD (flywheel end) 0.976 24.80 0.980 24.90
Crankshaft journal OD (PTO end) 0.998 25.35 0.999 25.37
Connecting rod max. ID (crank side) 1.101 27.953 1.101 27.965
Connecting rod max. ID (piston side) 0.563 14.307 0.564 14.319
Piston pin 0.551 13.995 0.551 14.000
Piston pin bore 0.551 14.004 0.552 14.014
Connecting rod to crank pin running clearance 0.001 0.01 0.002 0.04
Crankshaft bearing cavity (cylinder block) 2.045 51.95 2.046 51.97
Crankshaft bearing ID (sump) 1.000 25.40 1.001 25.42
Cam shaft OD (cylinder block) 0.3725 9.46 0.373 9.47
Cam shaft OD (sump side) 0.550 13.97 0.551 13.98
Cam shaft bearing ID (cylinder block) 0.374 9.50 0.375 9.52
Cam shaft bearing ID (sump) 0.551 14.00 0.552 14.02
Intake lobe rise 0.195 4.96 0.201 5.11