Chrysler 70-150 HP Outboard Service Manual 1969–1973 (P/N OB 1565)
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Chrysler Models Covered & Key Technical Specifications
Models: Chrysler Outboard 70 hp, 75 hp, 80 hp, 90 hp, 105 hp, 115 hp, 120 hp, 130 hp, 135 hp, 150 hp
Sub-models / Variants: 75 H.P. (Electronic), 85 H.P. (Charger), 90 H.P. (Electronic), 105 H.P. (Magnapower II), 105 H.P. (Electronic), 105 H.P. (Charger), 115 H.P. (Charger), 120 H.P. (Magnapower II), 120 H.P. (Electronic), 135 H.P. (Magnapower II), 135 H.P. (Racing), 135 H.P. (Electronic), 150 H.P. (Racing), Three-Cylinder Engines, Four-Cylinder Engines
Model Years: 1969–1973
Technical Data:
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Engine Configuration: 3 and 4-cylinder, 2-cycle
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Bore and Stroke: 3-5/16" x 2.8" or 3-3/8" x 2.8"
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Displacement: 72.39 to 99.8 Cubic Inches
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Operating RPM Range: 4400–5600 RPM
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Electrical System: 12 Volt, Negative Ground
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Cooling System: Water-cooled displacement type water pump
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Propeller: 12" or 13" diameter, 15" to 21" pitch, right-hand rotation
Chrysler Manual Features & Content Preview
- Covers 1969–1973 Chrysler Outboard motors (70–150 HP), including all 3-cylinder and 4-cylinder engine variants
- Official Chrysler publication OB 1565 (Change 3), providing factory-accurate reference data
- Packed with technical exploded-view diagrams, wiring schematics, and breakerless ignition timing charts
- Includes all precise torque and clearance values essential for internal powerhead and gear housing rebuilds
Engine and Component Documentation
This 150-page technical reference provides a complete structural breakdown of the 3-cylinder and 4-cylinder powerhead and lower units. You will find extensive data on the fuel system, specifically detailing the WB and TC type carburetors. It also covers ignition timing parameters for both standard breakerless and Magnapower II systems. Working on the electrical side? The manual lists precise mechanical adjustments for throttle linkages, neutral interlock switches, and alternator components for both Motorola and Delta setups.
Precision Technical Data
Get the exact factory specifications for the entire model range. The manual documents bore, stroke, and displacement for every model code. Need torque specs? The cylinder head torque for 105 HP models is listed strictly at 270 inch-pounds. Spark plug gaps are clearly defined at 0.014 inches for standard engines and 0.010 inches for high-performance units. You will also find the accepted compression range for the 90 HP engine (155–165 P.S.I.). Always ensure the engine is fully disconnected from power, depressurized, and properly secured before beginning any diagnostic teardown.
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