MAINTENANCE
SERVICE MANUAL NUMBER 30
MIE (Inboard) Models
Model
8.1S Horizon
8.1S HO
Propshaft Horsepower
370
1
4201
Propshaft Kilowatts
276
313
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
4200-46002
4400-48002
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.
Firing Order
72008
LH ROTATION FRONT
FIRING ORDER 1-8-7-2-6-5-4-3
INDEX
Page 1B-8
90-863161 SEPTEMBER 2000
| 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