Mercury MerCruiser MCM 454 Mag MPI Service Manual page 832

SERVICE MANUAL NUMBER 23
4. Place new gasket on pickup housing and hold pickup in place on transom. Install four
NOTE: Some installations may have 7/32 in. (5 mm) holes drilled in transom using four 5/16
in. diameter stainless steel lag bolts in place of round head screws. In any case, flat washers
and O-rings are required as outlined.
5. Secure water pickup from inside with locknuts and washers (unless using lag bolts).
6. Tighten fasteners securely.
Index
90-861326--1 MARCH 1999
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round head bolt (with washers and O-rings in place) into pickup mounting holes and
through drilled 21/64 in. (8 mm) holes in transom.
Water Pickup Installed on Transom
a - Diagonal Mount - Leading Edge Of Pickup 1/8 In. (3.2 mm) From Boat Bottom.
b - Vertical Mount - Corner Of Leading Edge Of Pickup 1/8 In. 3.2 mm) From Boat
Bottom
a
b
SEAWATER COOLED MODELS
72641
Page 6A-7