1979 Evinrude 4 HP Outboards Service Manual, PN 5424, Page 11Get this manual
CLEARANCE CHART POWERHEAD
Piston ring gap Piston ri nggroove Cylinder and piston
0.015 Max- 0.005 Min(0.380.13 mm) 0.0040 Max- 0.0020 Min(0.1020.051 mm) 0.0030 Max- 0.0018 Min(0.076046 mm)
LOWER UNIT
Weedless Standard Weedless PinionBushing in Gearcase Drive ShaftBushing in Gearcase Gearcase HeadBushing Assembly Propel Ier on Shaft Gearcase Bush ing to Propel Ier Shaft Standard
0.0018 Max- 0.0005 Min(0.0460.013 mm) 0.003 Max- 0.001 Min(0.080.03 mm) 0.0015 Max- 0.0005 Min(0.0380.013 mm) 0.0053 Max- 0.0020 Min(0.1350.051 mm) 0.0022 Max- 0.0007 Min(0.0560.018 mm) 0.0067 Max- 0.0022 Min(0.1700.056 mm) 0.0022 Max- 0.0007 Min(0.0560.018 mm)
TORQUE CHART
SA.FETY WARNING
Failure to comply with recommended torque values could result In operator Injury or motor damage
POWERHEAD
FI ywheel nut Connecting rod screws Cyl inder head screws Crankcase to cyl inder screws upper, center, lower Spark plugs Pull at propeller shaft to tilt up lower unit Power pack mounting screws
3040 6066 6080 6080
Foot pounds Inch-pounds Inch-pounds Inch-pounds