Mercury MerCruiser MCM 454 Mag MPI Service Manual page 186

MIE MODELS - HURTH TRANSMISSION
a. Models with Down Angle Transmission: Lift engine into boat and position on
b. Models with V-Drive Transmission: Lift engine into boat and position on engine
4. Check all four mounts to ensure that they are still positioned properly, then fasten
mounts to engine bed with appropriate bolts or lag screws and hardware. Tighten lag
bolts/screws securely.
5. Disconnect and remove sling. Proceed to "Engine Final Alignment" section following.
Index
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engine bed so that transmission output flange and propeller shaft coupler are visibly
aligned. No gap should be seen between coupling faces when butted together.
Adjust engine bed height, if necessary, to obtain proper alignment. DO NOT use
mount adjustments to adjust engine position at this time.
a - Propeller Shaft
b - Propeller Shaft Coupler
c - Transmission Output Flange
bed so that enough propeller shaft protrudes through transmission and output flange
for propeller shaft coupler to be attached. Then, install coupler and position engine
so no gap can be seen between coupling faces when butted together. Adjust
engine bed height, if necessary, to obtain proper alignment. DO NOT use mount
adjustments to adjust engine position at this time.
c
a
a - Propeller Shaft
b - Propeller Shaft Coupler
c - Transmission Output Flange
d - No Gap Allowed
c
b
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SERVICE MANUAL NUMBER 23
a
d
c
b
90-861326--1 MARCH 1999
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