1988-1992 Mercury Force 5HP Outboards Service Manual, Page 47Get this manual
FREASSEMBLING CARBURETOR AS REQUIRED
Place welch plug into recess of carburetor body Carefully tap center of welch plug
NOTE: This will spread plug and hold it in place Seal top of plug with nail polishInstall throttle assembly Slide throttle return spring (A) onto throttle shaft (8) and slide assembly into housing