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Mercury MerCruiser 3.0 MPI User Manual

Mercury MerCruiser 3.0 MPI
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DRIVE SYSTEM AND ENGINE INSTALLATION SECTION - 6
Page 30 / 54 90-899883183 DECEMBER 2007
c. Tighten the bottom nut to hold the engine in place. Then release the tension.
b
7964
a
a
d
c
Side‑mount model
a - Engine mount
b - Top nut
c - Tab washer
d - Bottom nut
8. Recheck alignment with alignment tool. The tool must enter the coupling splines freely. If not,
readjust the front mounts.
a
b
a
7792
a - Alignment tool
b - End inserted through gimbal housing assembly
9. When alignment is correct, tighten the locknut securely and recheck alignment.
10. Bend tab on adjusting nut down.
11. Remove the alignment tool. If not installing the drive, fold the bell housing dust cover flap into
place and tape it shut for boat shipment. The dust cover flap must be removed before operating
the engine.
Exhaust Connections
All exhaust connections, including those at the exhaust elbow, should be secured with 2 hose
clamps. ABYC standards also specify the use of stainless steel clamps with a minimum 13 mm
(1/2 in.) band width. Do not use spring tension clamps.
Description Nm lb‑in. lb‑ft
Exhaust tube clamps 3 26
Engine Harness Connections
IMPORTANT: The 14‑pin wiring harness can supply a maximum 15 amps of accessory power.
An accessory relay and harness kit is available for higher accessory needs.
1. Route the instrumentation harness to the engine. Do not allow the harness to rub or pinch. If
an extension harness is required, secure the connection properly.
2. Fasten the harnesses to the boat at least every 45.7cm (18 in.) using appropriate fasteners.

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Mercury MerCruiser 3.0 MPI Specifications

General IconGeneral
BrandMercury
ModelMerCruiser 3.0 MPI
CategoryEngine
LanguageEnglish

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