1965 Evinrude SportFour Heavy Duty 60 HP Outboards Service Manual, 4204, Page 23Get this manual
dWith motor in gear, run at full throttleLean out one high-speed needle by turning clockwise until motor starts to slow down, then enrich high-speed needle by turning counterclockwise two notchesRepeat adjustment on second high-speed needle NOTE Since it is almost impossible to detect minor speed changes in the V-4 motor, tachometer must be used to obtain proper adjustmentUse one throughout the adjusting procedureeKeep motor in gear and retard throttle to fast idle position (700 to 750 rpm)Slowly lean one lowspeed needle valve by turning clockwise until motor hesitates or spits slightly; then enrich needle valve by turning counterclockwise to where the highest rpm reading and smoothest performance are obtainedRepeat adjustment on second low-speed needlefAdjustment of high-speed needle MUST be repeated as described in step (d)
Figure 3-27 Removing Fuel Filter
gSnap throttle wide open and note responseIf motor heSitatesrepeat step (e) and step (d) until motor responds without hesitationFinal adjustment must always be made on high-speed needleshReplace high- and low-speed knobs in normal pOSition without disturbing pOSitions of needlesAny further operating adjustments of the high-speed mixture will be made simultaneously through the highspeed control gearjAdjust idle adjustment screw so that motor idles between 600 and 650 rpm IN GEARiThe carburetor is now properly adjusted