Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 139Get this manual

Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 139

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45 Install exhaust plate to powerhead (with gasket) using hex nuts and loc kwashersTorque hex nuts to 30 lbft(40.7 Nm) 47 Add light oi to th reads of cy linder head bolls and install cylinder heads as