SERVICE MANUAL NUMBER 30
MAINTENANCE
Specifications
MCM (Sterndrive) Models
Model
496 MAG
496 MAG HO
Propshaft Horsepower
3751
4251
317
Propshaft Kilowatts
280
Number of Cylinders
Displacement
8
496 cid (8.1 l)
Bore/Stroke in. (mm)
Compression Ratio
4.25 / 4.38 (108 / 111)
9.1:1
Compression Pressure
Idle rpm (in Neutral Gear)
Max. rpm (at WOT)
Minimum 100 psi (690 kPa)3
6502
4400-48002
4600-50002
Oil Pressure (at 2000 rpm)
Oil Pressure (at Idle)
Electrical System
60 psi (414 kPa)
30 psi (207 kPa)
12 V Negative (–) Ground
6 psi (41 kPa)
Fuel Pressure (Running)
Alternator Rating - Hot Operating Amps
Alternator Rating - Cold Operating Amps
Min. Battery Requirements
Firing Order
65 Amps
72 Amps
650 cca / 825 mca / 150Ah
1-8 7-2 6 5 4 3
Spark Plug Type
Denso TJ14R-P15
0.060 in.(1.52 mm)
160° F (71° C)
Spark Plug Gap
Thermostat
1
2
3
Power rated in accordance with NMMA (National Marine Manufacturer’s Association) rating procedures.
Measured using a accurate service tachometer with engine at normal operating temperature.
Minimum recorded compression in any one cylinder should not be less than 70 percent of the highest recorded
cylinder.
INDEX
90-863161
SEPTEMBER 2000
Page 1B-7
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 496 CID |
| Model Year | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(2 votes, average: 4 out of 4)
Marine readers have rated Mercury MerCruiser 496 CID 8.1L Gasoline Marine Engines Service Manual Number 30 4.0 out of 4.0 based on 2 product reviews. How many openings for crankcaseventilation is there on
Merc 496 HO ?
Great down load . it was all there an more