This comprehensive Service Repair Manual for the Chrysler 300 / M440 Marine Engine, specifically covering models produced in the 1970s, provides detailed instructions and technical specifications for maintaining and repairing your engine. With 196 pages of in-depth information, the manual is your essential guide to keeping your marine engine running smoothly. It includes sections covering engine operation, specifications, cooling system, lubrication and maintenance, engine components, fuel system, electrical system, reverse gear, and procedures for laying up and fitting out your boat. Additionally, the manual includes 25 pages of supplemental data for other Chrysler marine engines including the 260, 280, and 330 models. These supplements provide valuable technical information regarding engine data and specifications, cooling system details and service procedures, fuel system components and service procedures, and a comprehensive overview of the electrical system, including specifications, troubleshooting, and overhaul procedures for the starter, alternator, voltage regulator, ignition system, and Prestolite alternator charging circuit.

The Chrysler M440 inboard engine, a mainstay of the 1970s boating scene, was a powerful and reliable workhorse designed for recreational and commercial applications. This gasoline-powered engine, with its robust construction and impressive horsepower output, propelled a wide range of boats from sleek speedsters to sturdy fishing vessels. The M440 was renowned for its smooth operation and efficient performance, making it a popular choice among boaters seeking a dependable and durable power source. The engine's design incorporated a number of innovative features, including a balanced crankshaft and a high-capacity oil sump, contributing to its long lifespan and reduced maintenance requirements.

The M440 engine was available in various configurations, with different horsepower ratings to suit specific boat types and sizes. Its compact design and relatively lightweight construction made installation relatively straightforward, while its accessibility for servicing ensured easy maintenance. Despite its age, the M440 continues to be a sought-after engine by boat enthusiasts and mechanics alike. Its classic design and proven reliability have secured its place in boating history, and spare parts and repair manuals are still readily available. Owners of M440-equipped boats can continue to enjoy the power and performance of this legendary engine for many years to come, provided they maintain it diligently and access the wealth of knowledge available in the service repair manual.