This manual is suitable for both first-time owners/amateurs and professional technicians. It is designed in an easy-to-read format and provides all the necessary information to perform procedures correctly.
MODELS COVERED:
MCM 120 MR-6853914 to 0A492055
MCM 120 Alpha I-0A492056 to 0B531853
MCM 2.5L-0C856450 and Above
MCM 140 MR-6852270 to 0A484072
MCM 140 Alpha I-0A484073 to 0B450800
MCM 3.0L-0C856450 and Above
Sea Ray 3.0L-0B787205 to B917530
NOTICE:
MCM 2.5L MCM3.0L - Same as MCM 120.
Sea Ray 3.0L-Same as MCM 140 (Later Models are rated at 130 HP and have 9.2:1 Compression ratio.)
TABLE OF CONTENTS:
SECTION 1 - Important Information
A - Important Information
B - Maintenance
C - Troubleshooting
SECTION 2 - Removal & Installation
A - 4 Cyl. 153-181 CID (2.5-3.0L)
B - Driveshaft Extension Models
SECTION 3 - Engine Mechanical
A - G.M. In-Line
SECTION 4 - Electrical Systems
A - Starting System
B - Ignition System
C - Charging Systems
D - Instrumentation
E - Electrical Kits
F - Wiring Diagrams
SECTION 5 - Fuel Systems
A - Fuel Delivery System
B - Fuel Pump
C - MerCarb 2-Barrel
SECTION 6 - Cooling and Exhaust
A - Seawater Cooled Models
B - Closed Cooled Models
C - Exhaust Manifolds/Elbows
SECTION 7 - Power Steering
A - Power Steering
Keep this shop manual handy and refer to it regularly. Performing routine preventive maintenance will save you time and money by helping to prevent premature failure and unnecessary repairs.
