Mercruiser Service Manual #01: Stern Drive Units and Marine Engines 1963-1973

This comprehensive service manual provides detailed instructions and specifications for the maintenance, troubleshooting, and repair of Mercruiser stern drive units and marine engines manufactured from 1963 to 1973.

#### **Stern Drive Units** **Models Covered:** - MerCruiser 120 (1963-1973) - MerCruiser 140 (1963-1973) - MerCruiser 165 (1963-1973) - MerCruiser 190 (1963-1973)
**Technical Specifications:** **Drive Type:** Inboard/Outboard Stern Drive **Transmission:** Hydraulically Controlled, Forward/Neutral/Reverse **Gear Ratio:** 1.51:1 to 2.0:1 **Propeller Type:** Three-Blade, Bronze **Propeller Diameter:** 13" to 16" **Cooling System:** Direct Water Cooling **Shift System:** Hydraulic **Steering System:** Mechanical **Electrical System:** 12V DC **Battery Capacity:** 600-800 CCA
#### **Marine Engines** **Models Covered:** - MerCruiser 225 (1963-1973) - MerCruiser 255 (1963-1973) - MerCruiser 325 (1963-1973) - MerCruiser 400 (1963-1973) - MerCruiser 470 (1963-1973)
**Technical Specifications:** **Engine Type:** V-Type, Gasoline **Number of Cylinders:** 4, 6, 8 **Bore:** 4.00" to 4.63" **Stroke:** 3.63" to 4.38" **Displacement:** 225 cu. in. to 470 cu. in. **Compression Ratio:** 8.5:1 to 10.0:1 **Fuel System:** Carburetor **Ignition System:** Point-Type Distributor **Cooling System:** Closed-Cycle, Freshwater **Lubrication System:** Pressure-Fed **Electrical System:** 12V DC **Starting System:** Electric Starter **Alternator:** 45 Amperes
#### **Additional Features** - Complete disassembly and reassembly instructions - Troubleshooting charts and diagnostic procedures - Torque specifications and fastener tightening sequences - Electrical schematics and wiring diagrams - Exploded views and parts lists - Step-by-step repair instructions for major components - Safety precautions and maintenance tips

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Mercruiser Service Manual #01 Stern Drive Units and Marine Engines 1963-1976
All
MC 120 S/N: 3780849 and below
MC 140 S/N: 3780849 and below
MC 160 S/N: All
MC 165 S/N: 3780849 and below
MC888 S/N: 3784374 and below
MCM 215 H S/N: All
MCM 215 E S/N: All
MCTR S/N: 3787239 and below
MCII S/N: All
MCIII S/N: All

Mercruiser Inboard Engines (MIE)
MIE 30 S/N: All
MIE 55 S/N: All
MIE 215 S/N: All
MIE 225 (G.M.) S/N: All
MIE 225 (Ford) S/N: 3750507 and below
MIE 250 (327 CID) S/N: 4767999 and below
MIE 255 (Ford) S/N: 3839487 and below
MIE 270 S/N: All
MIE 325 S/N: All
MIE 390 S/N: All

Service Repair Manual Covers:

Section 1-General Information
A-General Information
B-Tuneup
C-Lubrication

Section 2-Removal-Installation-Alignment
A-Mercruiser 60-80-90
B-MerCruiser I Early
C-MerCruiser II Early
D-MerCruiser II Transom
E-MerCruiser III
F-MerCruiser 215H
G-MerCruiser 215E
H-888 Sterndrive
J-MerCruiser II-TR Drive Unit

Secton 3-Electrical Systems
A-Starting System
B-Ignition System
C-Alternator System
D-Instrumentations
E-Wiring Diagrams

Section 4-Fuel Systems
A-Fuel Pumps
B-Carburetors

Section 5-Engine
A-Inline GM Engine Mechanical
B. In-Line 60-80-90-Engine Mechanical
C-V-8 GM Engine Mechanical
D-V-8 Ford Engine Mechanical

Section 6-Drive Systems
A-MerCruiser 60-80-90 & MerCruiser I
B-MerCruiser II
C-MerCruiser 215
D-MerCruiser III
E-Direct Drive Transmission
F-MerCruiser II-TR Drive Unit
G-MerCruiser II-TR Drive Unit

Section 7-Accessories
A-Power Tilt & Trim
B-Steering System
C-Remote Controls
D-Cooling
E-General Accessories

Section 8-Specifications
Section 9-Tools

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