1968 Evinrude Big Twin, Big Twin Electric, Lark 40 HP Outboards Service Manual, Page 9Get this manual
CLEARANCE CHART POWER HEAD Piston and wrist pin100se end Piston ring gap Piston ring groove c1earance Cylinder and piston .0006 .017 .007 .0045.0001 Min- .007 Min- .0045 Min- .003 Min
Crankshaft bearings Roller type Upper Roller type Center Roller type Lower Crankshaft end .011.003 Min
Connecting rod bearings Roller type Piston end Crankshaft end Roller type LOWER UNIT Gearcase head and shaftLark Driveshaft to gearcase bushing Pinion to gearcase Roller type Roller type Roller type
shaft to gearcase front Front gear to front bushingManua1 Shift Front gear to front bushingE1ectric Shift Front gear bushing to shaftManua1 Shift Front gear bushing to c1utch hubE1ectric Shift shaft to gearcase Shift Reverse gear to bushingManua1 Shift Rear gear bushing to shaftManua1 Shift Rear gear to c1utch hubE1ectric Shift shaft at drive pin h01e shaft above the shou1derManua1 Shift shaft above the shou1derE1ectric Shift
Tapered Press fit .0011 .002 .0011 type .002 .0015 Roller type .007 .0069 .0066.003 Min- .0034 Min- .0032 Min- .0005 Min- .0005 Min- .0003 Min- .001 Min- .0003 Min