1985 Mercury Outboard V-300 V-3.4L Shop Service Manual, Page 136Get this manual
REED BLOCKCARBURETOR ADAPTOR PLATE INSTALLATION Instail carburetor adaptor plates and fuel pump mo unting plales, as shown Apply Locl ile 271 to threads of bolt and torque 10 ISO Ibsin(17 N.m)Con nect hoses as shown in lined rawingon page4.S and 4-52