Evinrude/Johnson 2-40 HP Outboard Motor Service Manual, 1973–1990 (P/N B732)

• Covers all 1973–1990 Evinrude and Johnson 2 HP through 40 HP models, including 2-stroke combustion engines and electric trolling variants
• Official Clymer Intertek publication (P/N B732)
• Features 41 detailed technical figures, complete wiring schematics, gearcase clearance charts, and precise spark plug gap tables
• Documents the entire transition from early breaker point ignitions to CD2 and CD2UL systems across the 2–40 HP lineup

Engine and Electrical Coverage

This manual breaks down the internal operating principles, lubrication specs, and fuel system calibration for the entire 2–40 HP range. You will find step-by-step documentation detailing the mechanical synchronization of linkages and carburetors. The electrical sections thoroughly map out magneto, CD2, and CD2UL ignition setups, alongside diagnostic breakdowns for electric motors. Note: When reviewing these procedures, always prioritize safety—the manual emphasizes disconnecting spark plug leads and batteries before inspecting high-voltage ignition components or moving engine parts.

Specification Previews

Stop guessing on maintenance schedules and torque specs. This manual lays out the exact technical parameters you need for accurate servicing. Quick reference data includes ignition coil torque specified at 60–80 in-lbs and spark plug gaps documented at 0.030–0.040 inches, depending on your specific engine model. Need lower unit data? The gearcase clearance table provides exact tolerances, such as the 0.0015–0.0030 inch propeller shaft bearing housing bushing clearance for 6 HP models. Whether you are understanding parts documentation for vintage outboard motors or verifying factory tolerances, this is the definitive technical reference for your vintage Evinrude or Johnson build.