Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 251Get this manual
12Tighten connecting rod bolts (using 516 in- 12 point socket) First torque to 15 lbin(1.5 Nm) then 30 lbft(40.5 Nm)Turn each bolt an additional 90 after 2nd torque is attainedRecheck alignment between rod cap and rod as shown Crankcase Cover Installation
1Thoroughly remove all oil from mating surfaces of crankcase cover and cylinder block with Loctite Primer 203 included in Master Gasket Kit (92-12564-1 )aConnecting Rod Screws
13Rotate crankshaft several times (using powerhead stand) to assure free operation (no binds and catching)Connecting Rod Cap Alignment