Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 159Get this manual
Reed Block Assembly Installation 1Secure oil pump adaptor plate to air plenum with boltsTorque bolts to 16 lbft(22.0 Nm)
Throttle Plate Assembly Removal
NOTE: The throttle plate assembly is calibrated and preset for proper running characteristics and emissions at the factoryOther than complete assembly removal from the air plenum, no further disassembly should be madeRemove bolts securing throttle plate assembly to air plenum and remove assembly
2Secure air plenum to reed plate with screwsDrive screws tight