1996 Johnson Evinrude "ED" 40 thru 55 2-Cylinder Service Manual, P/N 507124, Page 44Get this manual

1996 Johnson Evinrude "ED" 40 thru 55 2-Cylinder Service Manual, P/N 507124, Page 44

Throttle Plate Synchron ization 121 1Loosen cam follower adjustment screw follower away from throttle cam and move cam fJl
boat must not be tied to dock or trailer2Start the engine and allow it to reach normal operating temperature3Check idle RPM
in FORWARD gear with an accurate tachometer achieve 800 25 RPM when idle speed screw is firmly against its stopTighten locknut5Start
engine and verify idle speed in FORWARD gearVerify that the idle timing is ATDC 1If idle timing is not within range, optimize
the carburetor idle mixture screwsRefer to Carburetor Mixture Adjustment, Section 2Then repeat Step 4If the engine does not
respond properly to this adjustment or if you cannot verify an idle timing of ATDC when engine is idling in FORWARD gear
at 800 25 RPM, check the following: Engine temperature Powerhead condition Sufficient exhaust back pressure Vacuum balance