1990 Johnson Evinrude "ES" 60 thru 70 Service Manual, P/N 507873, Page 41Get this manual
r:;-] 5Continue to turn the flywheel in clockwise direction until piston contact is felt againMark this exact spot on the flywheel and consider this mark "8 Remove the piston stop toolr:;-] 6Use scale along the flywheel edge and measure the midpoint between the two linesMark the midpoint on the rim of the flywheelConsider this mark "C If the mark "c" and the cast-in TDC line are in agreement, the timing pointer alignment is correctIf not, proceed to Step 7r:;-] 7Turn the flywheel to align the mark "c" with the pointerHold the flywheel in this positionLoosen the pointer screw and move the pointer to align with cast-in TDC mark on the flywheelTighten the pointer screwThrottle Valve Synchronization
INotel With the engine idling in NEUTRAL, if loosening the carburetor lever adjustment screws results in better idle, improper synchronization of the throttle valves is indicatedAt idle, the throttle valves in all carburetors must be completely closedIf the carburetor linkage is misadjusted so one carburetor throttle plate is slightly open, it will result in poor quality idle1Remove the air silencer cover to observe the throttle valve action