1977 Evinrude 4HP Outboards Service Manual, PN 5303, Page 65Get this manual
eInsert shoulder screw and assemble starter to power headTighten screw to specified torque, Section 2Install cup and stop assembly adjustment screwSee Figure 7-3Do not tighten at this time fIf pre-load is correct, install rubber bumper, rope handle, and knot ropeSee Figures 7-1 and 7-6Adjust idler gear engagement as described in "Adjustment
WINDING STARTER SPRING
aLightly coat starter spring with OMC Type "A" Lubricantb Engage idler gear with flywheel and lock in position, using OMC Special Tool #383967Place tool in lower motor cover groove along side of idler armTurn thumbscrew provided with tool into hole of idler arm, making sure idler gear is engaged into flywheelTurn flywheel in clockwise direction and wind starter-spring into cup and stop assembly until spring loop contacts slot in pulley See Figure 7-10
Figure 7-11Checking Spring Pre-Tension