1977 Evinrude 4HP Outboards Service Manual, PN 5303, Page 8Get this manual
CLEARANCE CHART POWER HEAD Piston ring gap Piston ringgroove Cylinder and piston CrankshaftUpperCenterLower Connecting rodPiston endCranksahft end LOWER UNIT Weedless Standard PinionBushing in Gear Case 0.003 Max- 0.001 Min (0.080.03 mm) 0.0015 Max0.0005 Min(0.0380.013 mm) 0.0053 Max- 0.0020 Min(0.1350.051 mm) .0022 Max- .0007 Min(0.0560.018 mm) .0067 Max- .0022 Min(0.1700.056 mm) .0022 Max- .0007 Min(0.056.018 mm) SAFETY WARNING Standard .0018 Max- .0005 Min(0.0460.013 mm) 0.015 Max- 0.005 Min(0.380.13 mm) 0.0040 Max- 0.0020 Min(0.1020.051 mm) 0.0020 Max- 0.0008 Min(0.0510.020 mm) Needle Bearings 0.0023 Max- 0.0013 Min(0.0580.033 mm) 0.0023 Max- 0.0013 Min(0.058.033 mm) 0.0011 Max- 0.0004 Min(0.0280.010 mm) 0.0017 Max- 0.0007 Min(0.0430.018 mm)
Weedless Drive ShaftBushing in Gear Case Gearcase HeadBushing Assembly Propeller on Shaft Gear Case Bushing to Propeller Shaft
TORQUE CHART
POWER HEAD Flywheel nut Connecting rod screws Cylinder head screws Crankcase to cylinder screws uppercenter, lower Spark plugs Pull at propeller shaft to tilt up lower unit Power pack mounting screws ST ANDARD SC REWS Inch-Pounds No.6 No.8 No10 No12 14" 5 16" 3 8" 7-10 15-22 25-35 35-40 60-80 120-140 220-240 Foot- Pounds Nm 0.8 1.6 2.8 4.0 7.0 14.0 24 1.2 2.4 4.0 5.0 9.0 16.0 27