Mercury MerCruiser MCM 7.4L MPI User Manual

454 CID (7.4L) / 502 CID (8.2L) SERVICE MANUAL NUMBER 23
Page 3A-48
90-861326--1 MARCH 1999
6. Check installed height of valve springs using a narrow, thin scale cutaway as shown.
Measure from spring seat to top of valve spring, as shown. If measurement exceeds
specified height, install a valve spring shim and recheck. DO NOT shim valve springs
to give an installed height less than the minimum specified.
72562
50037
a
b
Cutaway Scale
a-Cut Away This Portion 1/2 Inch (13 mm)
b-Valve Spring Installed Height
Crankcase Oil Dipstick Specifications
All Engines
NOTICE
Unit Of Measurement: U.S. Inches (millimeter)
72341
1/2
(13)
1/2
(13)
1/2
(13)
33-1/2
(849)
15-1/8
(384)
19-7/64
(485)
35-1/4
(895)
17-13/64
(437)
1/2
(13)
19/32
(15)
59/64
(23)
FULL
FULL
FULL
ADD ADD
ADD
16-43/64
(423)
a
b
c
a-MCM Engines And Some MIE Models With Front Mounted Dipstick (805567)
b-MIE Engines With Velvet Drive (72 Series) In Line Transmissions (821503-3)
c-MIE Engines With Down-Angle, V-Drive, Or Remote V-Drive Transmissions
(821503-4)
Downloaded from https://needmanual.com/!
Index

Mercury MerCruiser MCM 7.4L MPI Specifications

General

Brand	Mercury
Model	MerCruiser MCM 7.4L MPI
Category	Engine
Language	English