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Mercury 3.0 MPI ECT User Manual

Mercury 3.0 MPI ECT
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Section 4 - Maintenance
Page 48 90-8M0113856 eng DECEMBER 2015
Drive Belts
!
WARNING
Inspecting the belts with the engine running may cause serious injury or death. Turn off the engine and remove the ignition
key before adjusting tension or inspecting belts.
a - Power steering pump pulley
b - Water circulating pump pulley
c - Crankshaft pulley
d - Alternator pulley
Checking
1. Inspect the drive belt for proper tension and for the following:
Excessive wear
Cracks
NOTE: Minor, transverse cracks (across the belt width) may be acceptable. Longitudinal cracks (in the direction of
belt length) that join transverse cracks are NOT acceptable.
Fraying
Glazed surfaces
Proper tension ‑ 6 mm (1/4 in.) deflection, with moderate thumb pressure, on the belt at the location that has the
longest distance between two pulleys.
Replacing - Front Mount Models
Power Steering Pump Drive Belt, if equipped
1. Loosen power steering pump attaching bolts and mounting bolts.
2. Pivot power steering pump toward engine, as required, until belt can be removed.
3. Install new drive belt on pulleys. Adjust tension.
a - Power steering belt
b - Spacer block
c - Alternator
d - Alternator belt
Description
Deflection 6 mm ( 1/4 inches)
Alternator Belt
1. Remove the power steering belt, if equipped.
2. Remove the two port side, front engine mount bracket assembly screws and washers.
b
d
c
a
7170
a
d
c
b
7172

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Mercury 3.0 MPI ECT Specifications

General IconGeneral
BrandMercury
Model3.0 MPI ECT
CategoryOutboard Motor
LanguageEnglish

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