1958-1965 Scott McCulloch Outboard Motor Service Manual
Service manual covering Scott McCulloch 3.6 to 75 hp outboard motors from 1958-1965. Includes maintenance, troubleshooting, and parts.
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Sample pages from the 1958-1965 Scott McCulloch Outboard Motor Service Manual manual
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Scotts Models Covered & Key Technical Specifications
Models: Scott / McCulloch 14 HP, Scott 12 HP, Sport Scott and McCulloch 28, McCulloch OX 140, Scott McCulloch 7 1/2 HP (Models 64300750 & 64300760)
Sub-models / Variants: Manual, Long Shaft, 135A, 235A, 335A, 435A, A3GB, B3GB, C3GB, D3GB, 14 HP, 12 HP, 28 HP
Build Years: 1958–1967
Serial Numbers: A3FB, B3FB, 61301210, 61301220, 62301470, 62301480, 62301490, 63301411, 63301412, 63301422, 63301491, 64301410, 64301420, 14000200, 65301410, 65301420, 14000200, 80370, 80373, 81442, 81443, 81448
Technical Data:
- Engine configuration: 2-cylinder, 2-cycle
- Piston displacement: 16.4 cu. in. (14 HP models), 27.65–29.97 cu. in. (28 HP models)
- Spark plug gap: 0.020–0.035 inches
- Magneto point gap: 0.020 inches
- Fuel-oil ratio: 1:100 (1963 and later), earlier models utilize 1:24 mix
- Max continuous HP rating: 25 HP (7 1/2 HP model variant)
- Crankcase main bearing screw torque: 80–90 inch-pounds
- Flywheel nut torque: 500–975 inch-pounds
Scotts Manual Features & Content Preview
1958–1965 Scott McCulloch Outboard Motor Documentation
- Covers 1958–1965 Scott McCulloch outboards ranging from 3.6 HP through 75 HP, including 14 HP and Scott 12 HP variants
- Official McCulloch Corporation illustrated parts list P/N 79088, published 1963
- Contains 7 detailed exploded-view diagrams covering top housing, starter, magneto, powerhead, and lower motor casing components
- OCR text layer lets you jump to a torque spec by keyword
- Laid out for standard letter and A4 printing
- This publication is the specific reference used for 7 1/2 HP Model 64300750 and 64300760 factory builds
Technical Scope and Data
This manual provides extensive documentation for the internal mechanics of various Scott McCulloch units. It covers the lubrication requirements for the powerhead and gearcase, describing the 100:1 fuel mixture ratio and necessary grease specifications for consistent underwater performance. The text details the ignition system components, highlighting the importance of correct point gap settings for high-voltage magneto operation. Cooling system descriptions are included, documenting the functionality of both plunger and rubber-rotor water pump designs as used on these units.
Component and Specification Preview
The specification sections provide critical identification data for the power unit and lower unit assembly. Cylinder head bolt torque values are documented at 80 inch-pounds in the engine assembly data. The spark plug gap is specified at 0.020 inches for standard tuning. Understanding parts documentation for vintage Scott McCulloch assists owners with identifying the correct components for their specific serial number range. This 100-page publication serves as the definitive reference for the 1958–1965 Scott McCulloch outboard motor range, documenting engine, gearcase, and starter specifications to support restoration work on these specific units.
Document Reference: P/N 79088, Copyright 1963, McCulloch Corporation
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