Mercury MerCruiser MCM 454 Mag MPI Service Manual page 189

SERVICE MANUAL NUMBER 23
5. If coupling centerlines are not aligned or if coupling faces are more than .003 in. (0.07
IMPORTANT: Both front mount (or rear mount) adjusting nuts must be turned equally
to keep engine level from side to side.
NOTE: Engine mount shown is typical. All models are similar and adjust in the same
manner.
Index
90-861326--1 MARCH 1999
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mm) out of parallel, adjust and retighten engine mounts as follows:
a. TO ADJUST ENGINE UP OR DOWN: Loosen locking nut on mounts requiring
adjustment and turn both front mount or rear mount adjusting nuts equally.
e
d
Typical Mount
a - Locking Nut
b - Adjusting Nut
c - Clamping Bolts and Nuts, With Lockwashers (Two Each on Some Models)
d - Lag Screws (Or Bolts)
e - Slot Forward (If So Designed - NOT Slotted On This Style Rear Mount)
b. TO MOVE ENGINE TO THE LEFT OR RIGHT: Loosen clamping bolt and nut on all
four mount brackets; move engine to the left or right as necessary to obtain proper
alignment. On mounts which do have a slotted hole, a small amount of adjustment
can be obtained with slot on front end of mounts. Loosen lag screws or bolts (which
fasten mounts to engine bed) and move engine, as required. Tighten lag screws or
bolts securely.
a
c
b
MIE MODELS - HURTH TRANSMISSION
70056
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