Mercruiser Marine Engine No. 17 GM V-8 305 CID (5.0L)/350 CID (5.7L) service manual
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Models Covered & Key Technical Specifications
17 GM V-8 305 CID (5.0L)/350 CID (5.7L / Mercury Marine
Mercruiser Marine Engine 17 GM V-8 305 CID (5.0L): Year Range: 1997-2001
Mercruiser Marine Engine 17 GM V-8 350 CID (5.7L): Year Range: 1997-2002
MCM Alpha
Model, Serial Number And Model Year
5.0LÂOD832472 - OF601000¨1993 - 1995
5.0LXOD831003 - OF601000¨1993 - 1995
5.7L (4 Barrel)¨OD830700 - OF601000¨1993 - 1995
5.7L (2 Barrel)¨OF601000 and Above¨1996 Thru 1997
5.7LX¨OF601957 and Above¨1996 Thru 1997
5.7L EFI¨OF286830 and Above¨1996 Thru 1997
5.7LX EFI¨OF752400 and Above¨1996 Thru 1997
350 Magnum¨OD830982 and Above¨1996 Thru 1997
350 Magnum EFI Gen+¨OF800500 and Above¨1996 Thru 1997
MCM Bravo
Model ,Serial Number And Model Year
5.0LOD833077 - OF6014641993 - 1995
5.7L (4 Barrel)¨OD831826 - OF605335¨1993 - 1995
5.7L (2 Barrel)¨OF605336 and Above¨1996 Thru 1997
5.7LX¨OF601645 and Above¨1996 Thru 1997
5.7L EFI¨OF225560 and Above¨1996 Thru 1997
5.7LX EFI¨OF752408 and Above¨1996 Thru 1997
350 Magnum¨OD800300 and Above¨1996 Thru 1997
350 Magnum EFI Gen+¨OF800500 and Above¨1996 Thru 1997
350 Magnum EFI/MP¨OF289431 - OF601999¨1995
350 Magnum MPI Gen+¨OF602000 and Above¨1996 Thru 1997
MIE Ski
- Model A
- Model B
- Model C
5.7L Competition (4 Barrel) ¨OD840220 - OF775199 ¨1993 - 1995
5.7L Competition (2 Barrel) ¨OF775200 and Above ¨1996 Thru 1997
350 Magnum Tournanment Ski ¨OD840100 and Above ¨1993 Thru 1997
350 Magnum EFI Tournament Ski ¨OF225157 - OK000000 ¨1994 - 1996
350 Magnum EFI Gen+Tournament Ski¨OK040006 and Above¨1997
350 Magnum EFI/MP Tournament Ski¨OF350583 - OF745536 ¨1995
350 Magnum MPI Tournament Ski ¨OF745537 - OK000000 ¨1996
350 Magnum MPI Gen+Tournament Ski (Black Scorpion) ¨OF800000 and Above¨1996
MIE Inboard
Model ,Serial Number And Model Year
5.7L¨ OD84000 and Above ¨1993 Thru 1997
5.7L EFI Gen+ ¨OK040300 and Above 1997
Professional Workshop Service Manual & Technical Specifications
MerCruiser GM V-8 5.0L (305 CID) / 5.7L (350 CID) — Marine Engine Service Manual (Book 1 of 2, 90-823225--1)
This manual is a spec-dense reference set for MerCruiser GM V-8 marine engines in the 5.0L (305 CID) and 5.7L (350 CID) families, packaged as Book 1 of 2 and covering Sections 1–4 (information, removal/installation routing, engine, and electrical systems). It’s built around model/serial applicability tables, numeric tune-up baselines, and wiring-diagram coverage rather than a generic overview. :contentReference[oaicite:0]{index=0}
Coverage gates listed in the manual
- MCM Alpha: 5.0L OD832472–OF601000; 5.0LX OD831003–OF601000 (1993–1995)
- MCM Alpha: 5.7L (4-bbl) OD830700–OF601000; 5.7L (2-bbl) OF601000 and above
- Alpha EFI/LX EFI families list serial breakpoints such as OF286830+, OF752400+, and OF601957+
- MCM Bravo: 5.0L OD833077–OF601464 (1993–1995) plus 5.7L/EFI/LX EFI entries with serial thresholds
- 350 Magnum / 350 Magnum EFI variants appear with defined serial “and above” boundaries (including Gen+ entries)
- Inboard groupings (Ski/Inboard) are also enumerated with their own serial/year ranges :contentReference[oaicite:1]{index=1}
What’s inside Book 1 (Sections 1–4)
The manual’s outline shows four major blocks: Important Information (specifications/maintenance/general info), Removal & Installation (Alpha/Bravo variants plus inboard transmission pairings), Engine (5.0L/305 and 5.7L/350), and Electrical Systems (starting, ignition, charging, instrumentation, kits, and wiring diagrams). :contentReference[oaicite:2]{index=2}
Spec anchors pulled from the tune-up pages
The tune-up tables consolidate key numeric baselines across the 305/350 variants: bore/stroke geometry, compression ratio and compression pressure, idle range, W.O.T. rpm bands by model, oil-pressure windows, mechanical fuel-pump pressure range, electrical-system polarity, minimum battery requirements, firing order (including LH/RH rotation mapping), spark plug families, plug gap, base timing reference, and thermostat ratings. :contentReference[oaicite:3]{index=3}
Compact technical table
| Spec category | Values shown |
|---|---|
| Bore × stroke | 305: 3.7 × 3.48 in (95 × 88.4 mm); 350: 4.00 × 3.48 in (101.6 × 88.4 mm) |
| Compression pressure | 150 psi (1034 kPa) |
| Oil pressure @ 2000 rpm | 30–60 psi (207–414 kPa) |
| Mechanical fuel-pump pressure @ 1800 rpm | 3–7 psi (21–48 kPa) |
| Crankcase oil (with filter) | 5-1/2 qt (5.2 L) |
| Electrical system | 12V negative (–) ground |
Fluid-capacity density (cooling and drivetrain context)
Beyond crankcase oil, the capacity pages list seawater and closed-cooling volumes (with separate entries depending on exhaust-manifold flow routing) and also include transmission capacities for common inboard pairings (Velvet Drive ratios and Hurth down-angle listings). The layout keeps these values grouped as quick-reference tables. :contentReference[oaicite:4]{index=4}
Electrical coverage signal: diagrams are a named subsection
Electrical Systems is not a single blended chapter: it’s partitioned into Starting, Ignition, Charging, Instrumentation, Electrical Kits, and a dedicated Wiring Diagrams subsection, which is a strong indic
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